./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:28:19,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:28:19,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:28:19,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:28:19,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:28:19,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:28:19,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:28:19,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:28:19,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:28:19,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:28:19,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:28:19,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:28:19,615 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:28:19,617 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:28:19,618 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:28:19,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:28:19,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:28:19,619 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:28:19,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:28:19,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:28:19,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:28:19,629 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:28:19,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:28:19,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:28:19,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:28:19,638 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:28:19,639 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:28:19,639 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:28:19,640 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:28:19,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:28:19,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:28:19,642 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:28:19,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:28:19,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:28:19,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:28:19,644 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:28:19,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:28:19,645 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:28:19,645 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:28:19,646 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:28:19,647 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:28:19,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 01:28:19,679 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:28:19,679 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:28:19,680 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:28:19,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:28:19,681 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:28:19,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:28:19,683 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:28:19,683 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:28:19,683 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:28:19,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:28:19,684 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:28:19,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:28:19,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:28:19,685 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:28:19,685 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:28:19,685 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:28:19,685 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:28:19,685 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:28:19,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:28:19,686 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:28:19,686 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:28:19,686 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:28:19,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:28:19,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:28:19,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:28:19,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:28:19,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:28:19,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:28:19,688 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 01:28:19,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 01:28:19,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:28:19,688 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:28:19,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:28:19,689 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:28:19,689 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:28:20,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:28:20,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:28:20,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:28:20,027 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:28:20,028 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:28:20,029 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-09-01 01:28:21,117 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:28:21,340 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:28:21,341 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-09-01 01:28:21,346 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc965cdda/c343c7c04e3a47299fbdfc87fc7c6c74/FLAGb281ac083 [2023-09-01 01:28:21,359 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc965cdda/c343c7c04e3a47299fbdfc87fc7c6c74 [2023-09-01 01:28:21,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:28:21,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:28:21,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:28:21,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:28:21,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:28:21,367 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:28:21" (1/1) ... [2023-09-01 01:28:21,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52160b1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:21, skipping insertion in model container [2023-09-01 01:28:21,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:28:21" (1/1) ... [2023-09-01 01:28:21,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:28:21,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:28:21,572 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-09-01 01:28:21,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:28:21,594 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-09-01 01:28:21,596 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1fd6efe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:21, skipping insertion in model container [2023-09-01 01:28:21,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:28:21,597 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 01:28:21,599 INFO L158 Benchmark]: Toolchain (without parser) took 235.55ms. Allocated memory is still 77.6MB. Free memory was 55.5MB in the beginning and 45.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 01:28:21,599 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:28:21,600 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.66ms. Allocated memory is still 77.6MB. Free memory was 55.3MB in the beginning and 45.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 01:28:21,602 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 62.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.66ms. Allocated memory is still 77.6MB. Free memory was 55.3MB in the beginning and 45.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:28:23,242 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:28:23,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:28:23,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:28:23,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:28:23,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:28:23,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:28:23,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:28:23,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:28:23,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:28:23,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:28:23,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:28:23,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:28:23,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:28:23,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:28:23,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:28:23,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:28:23,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:28:23,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:28:23,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:28:23,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:28:23,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:28:23,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:28:23,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:28:23,303 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:28:23,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:28:23,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:28:23,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:28:23,305 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:28:23,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:28:23,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:28:23,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:28:23,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:28:23,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:28:23,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:28:23,309 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:28:23,310 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:28:23,310 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:28:23,310 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:28:23,311 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:28:23,312 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:28:23,321 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 01:28:23,348 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:28:23,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:28:23,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:28:23,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:28:23,350 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:28:23,350 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:28:23,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:28:23,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:28:23,352 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:28:23,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:28:23,353 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:28:23,353 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:28:23,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:28:23,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:28:23,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:28:23,354 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:28:23,354 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:28:23,354 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:28:23,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:28:23,354 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:28:23,354 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 01:28:23,355 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 01:28:23,355 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:28:23,355 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:28:23,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:28:23,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:28:23,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:28:23,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:28:23,356 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:28:23,356 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:28:23,356 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 01:28:23,357 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 01:28:23,357 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:28:23,357 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:28:23,357 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:28:23,357 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 01:28:23,358 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:28:23,358 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:28:23,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:28:23,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:28:23,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:28:23,687 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:28:23,687 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:28:23,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-09-01 01:28:24,867 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:28:25,067 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:28:25,068 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c [2023-09-01 01:28:25,073 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06237da7/7c077e98f9ca42c38aa60c97a0b4fd0c/FLAG152d9dcb6 [2023-09-01 01:28:25,086 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06237da7/7c077e98f9ca42c38aa60c97a0b4fd0c [2023-09-01 01:28:25,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:28:25,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:28:25,091 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:28:25,091 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:28:25,094 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:28:25,095 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,098 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37361145 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25, skipping insertion in model container [2023-09-01 01:28:25,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,103 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:28:25,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:28:25,244 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-09-01 01:28:25,251 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:28:25,262 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 01:28:25,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:28:25,276 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-09-01 01:28:25,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:28:25,284 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:28:25,302 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2023-09-01 01:28:25,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:28:25,318 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:28:25,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25 WrapperNode [2023-09-01 01:28:25,318 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:28:25,319 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:28:25,320 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:28:25,320 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:28:25,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,334 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,353 INFO L138 Inliner]: procedures = 26, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 174 [2023-09-01 01:28:25,355 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:28:25,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:28:25,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:28:25,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:28:25,363 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,400 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,408 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,411 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:28:25,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:28:25,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:28:25,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:28:25,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (1/1) ... [2023-09-01 01:28:25,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:28:25,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:28:25,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 01:28:25,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 01:28:25,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:28:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 01:28:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:28:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 01:28:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 01:28:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 01:28:25,487 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 01:28:25,487 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 01:28:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 01:28:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:28:25,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:28:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:28:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 01:28:25,490 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:28:25,679 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:28:25,681 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:28:26,148 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:28:26,161 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:28:26,164 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-09-01 01:28:26,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:28:26 BoogieIcfgContainer [2023-09-01 01:28:26,166 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:28:26,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:28:26,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:28:26,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:28:26,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:28:25" (1/3) ... [2023-09-01 01:28:26,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b43c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:28:26, skipping insertion in model container [2023-09-01 01:28:26,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:28:25" (2/3) ... [2023-09-01 01:28:26,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70b43c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:28:26, skipping insertion in model container [2023-09-01 01:28:26,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:28:26" (3/3) ... [2023-09-01 01:28:26,175 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-09-01 01:28:26,189 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:28:26,190 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-09-01 01:28:26,190 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:28:26,316 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 01:28:26,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 227 transitions, 470 flow [2023-09-01 01:28:26,440 INFO L130 PetriNetUnfolder]: 19/225 cut-off events. [2023-09-01 01:28:26,441 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 01:28:26,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 225 events. 19/225 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 374 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 153. Up to 3 conditions per place. [2023-09-01 01:28:26,447 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 227 transitions, 470 flow [2023-09-01 01:28:26,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 221 transitions, 454 flow [2023-09-01 01:28:26,460 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:28:26,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 221 transitions, 454 flow [2023-09-01 01:28:26,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 221 transitions, 454 flow [2023-09-01 01:28:26,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 221 transitions, 454 flow [2023-09-01 01:28:26,514 INFO L130 PetriNetUnfolder]: 19/221 cut-off events. [2023-09-01 01:28:26,515 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 01:28:26,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 221 events. 19/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 377 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 153. Up to 3 conditions per place. [2023-09-01 01:28:26,521 INFO L119 LiptonReduction]: Number of co-enabled transitions 5460 [2023-09-01 01:28:45,357 INFO L134 LiptonReduction]: Checked pairs total: 8571 [2023-09-01 01:28:45,358 INFO L136 LiptonReduction]: Total number of compositions: 249 [2023-09-01 01:28:45,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:28:45,374 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@29a3915, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:28:45,375 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-09-01 01:28:45,377 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 01:28:45,378 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:28:45,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:28:45,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 01:28:45,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:28:45,384 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:28:45,384 INFO L85 PathProgramCache]: Analyzing trace with hash 28554, now seen corresponding path program 1 times [2023-09-01 01:28:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:28:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [838433199] [2023-09-01 01:28:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:28:45,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:45,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:28:45,397 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:28:45,398 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-09-01 01:28:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:28:45,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 01:28:45,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:45,627 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:28:45,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:28:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:45,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:28:45,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:28:45,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [838433199] [2023-09-01 01:28:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [838433199] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:28:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:28:45,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:28:45,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892306398] [2023-09-01 01:28:45,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:28:45,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:28:45,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:28:45,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:28:45,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:28:45,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 476 [2023-09-01 01:28:45,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:45,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:28:45,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 476 [2023-09-01 01:28:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:28:46,638 INFO L130 PetriNetUnfolder]: 1673/2669 cut-off events. [2023-09-01 01:28:46,639 INFO L131 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2023-09-01 01:28:46,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 2669 events. 1673/2669 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 14553 event pairs, 1358 based on Foata normal form. 0/919 useless extension candidates. Maximal degree in co-relation 2548. Up to 1325 conditions per place. [2023-09-01 01:28:46,653 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 89 selfloop transitions, 4 changer transitions 0/94 dead transitions. [2023-09-01 01:28:46,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 94 transitions, 398 flow [2023-09-01 01:28:46,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:28:46,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:28:46,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-09-01 01:28:46,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49159663865546216 [2023-09-01 01:28:46,668 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-09-01 01:28:46,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-09-01 01:28:46,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:28:46,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-09-01 01:28:46,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:46,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:46,682 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:46,684 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 120 flow. Second operand 3 states and 702 transitions. [2023-09-01 01:28:46,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 94 transitions, 398 flow [2023-09-01 01:28:46,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 94 transitions, 382 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 01:28:46,689 INFO L231 Difference]: Finished difference. Result has 50 places, 52 transitions, 134 flow [2023-09-01 01:28:46,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=50, PETRI_TRANSITIONS=52} [2023-09-01 01:28:46,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -5 predicate places. [2023-09-01 01:28:46,694 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 52 transitions, 134 flow [2023-09-01 01:28:46,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:46,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:28:46,695 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 01:28:46,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-09-01 01:28:46,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:46,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:28:46,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:28:46,905 INFO L85 PathProgramCache]: Analyzing trace with hash 28556, now seen corresponding path program 1 times [2023-09-01 01:28:46,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:28:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1010178516] [2023-09-01 01:28:46,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:28:46,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:46,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:28:46,911 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:28:46,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-09-01 01:28:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:28:46,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 01:28:46,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:46,998 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:28:46,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:28:47,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:47,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:28:47,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:28:47,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1010178516] [2023-09-01 01:28:47,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1010178516] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:28:47,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:28:47,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:28:47,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714020577] [2023-09-01 01:28:47,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:28:47,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:28:47,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:28:47,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:28:47,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:28:47,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 476 [2023-09-01 01:28:47,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 52 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:47,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:28:47,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 476 [2023-09-01 01:28:47,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:28:47,595 INFO L130 PetriNetUnfolder]: 1673/2665 cut-off events. [2023-09-01 01:28:47,595 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 01:28:47,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5353 conditions, 2665 events. 1673/2665 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 14613 event pairs, 1358 based on Foata normal form. 2/905 useless extension candidates. Maximal degree in co-relation 2665. Up to 2641 conditions per place. [2023-09-01 01:28:47,607 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 48 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-09-01 01:28:47,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 50 transitions, 228 flow [2023-09-01 01:28:47,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:28:47,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:28:47,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-09-01 01:28:47,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45588235294117646 [2023-09-01 01:28:47,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-09-01 01:28:47,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-09-01 01:28:47,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:28:47,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-09-01 01:28:47,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:47,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:47,616 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:47,616 INFO L175 Difference]: Start difference. First operand has 50 places, 52 transitions, 134 flow. Second operand 3 states and 651 transitions. [2023-09-01 01:28:47,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 50 transitions, 228 flow [2023-09-01 01:28:47,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 50 transitions, 220 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 01:28:47,618 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 124 flow [2023-09-01 01:28:47,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-09-01 01:28:47,619 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -7 predicate places. [2023-09-01 01:28:47,619 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 124 flow [2023-09-01 01:28:47,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:47,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:28:47,620 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:28:47,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-09-01 01:28:47,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:47,829 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:28:47,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:28:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash 888773, now seen corresponding path program 1 times [2023-09-01 01:28:47,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:28:47,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284091986] [2023-09-01 01:28:47,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:28:47,830 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:47,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:28:47,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:28:47,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-09-01 01:28:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:28:47,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 01:28:47,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:47,932 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:28:47,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:28:47,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:47,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:28:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:48,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:28:48,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284091986] [2023-09-01 01:28:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284091986] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:28:48,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:28:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 01:28:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29289377] [2023-09-01 01:28:48,071 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:28:48,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 01:28:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:28:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 01:28:48,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 01:28:49,045 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 476 [2023-09-01 01:28:49,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 124 flow. Second operand has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:49,047 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:28:49,047 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 476 [2023-09-01 01:28:49,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:28:51,609 INFO L130 PetriNetUnfolder]: 4181/6658 cut-off events. [2023-09-01 01:28:51,610 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 01:28:51,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13354 conditions, 6658 events. 4181/6658 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 40546 event pairs, 3395 based on Foata normal form. 0/2331 useless extension candidates. Maximal degree in co-relation 13346. Up to 1323 conditions per place. [2023-09-01 01:28:51,653 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 205 selfloop transitions, 13 changer transitions 0/219 dead transitions. [2023-09-01 01:28:51,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 219 transitions, 932 flow [2023-09-01 01:28:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:28:51,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:28:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1394 transitions. [2023-09-01 01:28:51,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2023-09-01 01:28:51,659 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1394 transitions. [2023-09-01 01:28:51,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1394 transitions. [2023-09-01 01:28:51,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:28:51,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1394 transitions. [2023-09-01 01:28:51,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 232.33333333333334) internal successors, (1394), 6 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:51,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:51,668 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:51,669 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 124 flow. Second operand 6 states and 1394 transitions. [2023-09-01 01:28:51,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 219 transitions, 932 flow [2023-09-01 01:28:51,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 219 transitions, 931 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:28:51,672 INFO L231 Difference]: Finished difference. Result has 55 places, 59 transitions, 216 flow [2023-09-01 01:28:51,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=55, PETRI_TRANSITIONS=59} [2023-09-01 01:28:51,673 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-09-01 01:28:51,673 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 59 transitions, 216 flow [2023-09-01 01:28:51,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 196.0) internal successors, (1176), 6 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:51,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:28:51,675 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:28:51,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-09-01 01:28:51,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:51,884 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:28:51,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:28:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash 889750, now seen corresponding path program 1 times [2023-09-01 01:28:51,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:28:51,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [664135099] [2023-09-01 01:28:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:28:51,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:51,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:28:51,886 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:28:51,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-09-01 01:28:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:28:51,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 01:28:51,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:51,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:28:51,960 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:28:51,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [664135099] [2023-09-01 01:28:51,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [664135099] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:28:51,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:28:51,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 01:28:51,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471894112] [2023-09-01 01:28:51,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:28:51,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:28:51,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:28:51,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:28:51,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:28:52,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 476 [2023-09-01 01:28:52,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 59 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:52,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:28:52,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 476 [2023-09-01 01:28:52,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:28:52,762 INFO L130 PetriNetUnfolder]: 3345/5329 cut-off events. [2023-09-01 01:28:52,762 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2023-09-01 01:28:52,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10725 conditions, 5329 events. 3345/5329 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 487. Compared 32604 event pairs, 2716 based on Foata normal form. 2/1809 useless extension candidates. Maximal degree in co-relation 10713. Up to 5277 conditions per place. [2023-09-01 01:28:52,784 INFO L137 encePairwiseOnDemand]: 469/476 looper letters, 50 selfloop transitions, 7 changer transitions 0/58 dead transitions. [2023-09-01 01:28:52,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 326 flow [2023-09-01 01:28:52,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:28:52,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:28:52,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-09-01 01:28:52,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46288515406162467 [2023-09-01 01:28:52,788 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-09-01 01:28:52,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-09-01 01:28:52,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:28:52,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-09-01 01:28:52,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:52,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:52,793 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:52,793 INFO L175 Difference]: Start difference. First operand has 55 places, 59 transitions, 216 flow. Second operand 3 states and 661 transitions. [2023-09-01 01:28:52,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 326 flow [2023-09-01 01:28:52,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 307 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 01:28:52,796 INFO L231 Difference]: Finished difference. Result has 57 places, 58 transitions, 220 flow [2023-09-01 01:28:52,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=57, PETRI_TRANSITIONS=58} [2023-09-01 01:28:52,798 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-09-01 01:28:52,798 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 58 transitions, 220 flow [2023-09-01 01:28:52,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:52,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:28:52,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:28:52,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-09-01 01:28:53,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:53,008 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:28:53,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:28:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash 854253348, now seen corresponding path program 1 times [2023-09-01 01:28:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:28:53,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [54102505] [2023-09-01 01:28:53,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:28:53,009 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:53,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:28:53,010 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:28:53,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-09-01 01:28:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:28:53,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 01:28:53,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 01:28:53,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:28:53,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 01:28:53,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:28:53,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [54102505] [2023-09-01 01:28:53,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [54102505] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:28:53,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:28:53,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-09-01 01:28:53,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908239066] [2023-09-01 01:28:53,148 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:28:53,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 01:28:53,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:28:53,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 01:28:53,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 01:28:53,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 476 [2023-09-01 01:28:53,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 58 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:53,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:28:53,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 476 [2023-09-01 01:28:53,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:28:53,818 INFO L130 PetriNetUnfolder]: 837/1342 cut-off events. [2023-09-01 01:28:53,819 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2023-09-01 01:28:53,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 1342 events. 837/1342 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 6386 event pairs, 679 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 2722. Up to 1321 conditions per place. [2023-09-01 01:28:53,826 INFO L137 encePairwiseOnDemand]: 467/476 looper letters, 42 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-09-01 01:28:53,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 301 flow [2023-09-01 01:28:53,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:28:53,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:28:53,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1260 transitions. [2023-09-01 01:28:53,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411764705882353 [2023-09-01 01:28:53,832 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1260 transitions. [2023-09-01 01:28:53,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1260 transitions. [2023-09-01 01:28:53,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:28:53,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1260 transitions. [2023-09-01 01:28:53,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 210.0) internal successors, (1260), 6 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:53,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:53,841 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 476.0) internal successors, (3332), 7 states have internal predecessors, (3332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:53,841 INFO L175 Difference]: Start difference. First operand has 57 places, 58 transitions, 220 flow. Second operand 6 states and 1260 transitions. [2023-09-01 01:28:53,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 301 flow [2023-09-01 01:28:53,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 01:28:53,847 INFO L231 Difference]: Finished difference. Result has 63 places, 55 transitions, 241 flow [2023-09-01 01:28:53,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=241, PETRI_PLACES=63, PETRI_TRANSITIONS=55} [2023-09-01 01:28:53,849 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 8 predicate places. [2023-09-01 01:28:53,850 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 55 transitions, 241 flow [2023-09-01 01:28:53,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 200.33333333333334) internal successors, (1202), 6 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:53,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:28:53,851 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 01:28:53,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-09-01 01:28:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:54,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:28:54,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:28:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 711206474, now seen corresponding path program 2 times [2023-09-01 01:28:54,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:28:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250698080] [2023-09-01 01:28:54,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:28:54,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:28:54,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:28:54,062 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:28:54,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-09-01 01:28:54,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 01:28:54,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:28:54,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 01:28:54,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:54,202 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:28:54,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:28:54,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:54,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:28:54,787 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:54,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:28:54,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250698080] [2023-09-01 01:28:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250698080] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:28:54,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:28:54,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 01:28:54,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627766548] [2023-09-01 01:28:54,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:28:54,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:28:54,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:28:54,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:28:54,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:28:58,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:28:58,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 55 transitions, 241 flow. Second operand has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:28:58,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:28:58,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:28:58,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:00,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:29:02,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:29:04,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:29:06,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:29:07,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:29:13,616 INFO L130 PetriNetUnfolder]: 4185/6674 cut-off events. [2023-09-01 01:29:13,616 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2023-09-01 01:29:13,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13532 conditions, 6674 events. 4185/6674 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 547. Compared 41866 event pairs, 3395 based on Foata normal form. 14/2366 useless extension candidates. Maximal degree in co-relation 13515. Up to 1321 conditions per place. [2023-09-01 01:29:13,683 INFO L137 encePairwiseOnDemand]: 467/476 looper letters, 204 selfloop transitions, 30 changer transitions 0/235 dead transitions. [2023-09-01 01:29:13,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 235 transitions, 1283 flow [2023-09-01 01:29:13,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:29:13,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:29:13,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2542 transitions. [2023-09-01 01:29:13,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44502801120448177 [2023-09-01 01:29:13,694 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2542 transitions. [2023-09-01 01:29:13,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2542 transitions. [2023-09-01 01:29:13,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:13,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2542 transitions. [2023-09-01 01:29:13,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 211.83333333333334) internal successors, (2542), 12 states have internal predecessors, (2542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:13,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:13,707 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:13,708 INFO L175 Difference]: Start difference. First operand has 63 places, 55 transitions, 241 flow. Second operand 12 states and 2542 transitions. [2023-09-01 01:29:13,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 235 transitions, 1283 flow [2023-09-01 01:29:13,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 235 transitions, 1236 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-09-01 01:29:13,713 INFO L231 Difference]: Finished difference. Result has 74 places, 75 transitions, 475 flow [2023-09-01 01:29:13,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=475, PETRI_PLACES=74, PETRI_TRANSITIONS=75} [2023-09-01 01:29:13,716 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 19 predicate places. [2023-09-01 01:29:13,716 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 75 transitions, 475 flow [2023-09-01 01:29:13,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 192.0) internal successors, (2304), 12 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:13,717 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:13,717 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-09-01 01:29:13,733 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:13,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:13,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:13,935 INFO L85 PathProgramCache]: Analyzing trace with hash 283452522, now seen corresponding path program 3 times [2023-09-01 01:29:13,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:13,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132211690] [2023-09-01 01:29:13,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:29:13,936 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:13,936 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:13,937 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:13,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-09-01 01:29:14,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 01:29:14,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:29:14,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:29:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:14,157 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:29:14,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:29:14,426 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:29:14,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:29:15,866 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:29:15,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:15,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132211690] [2023-09-01 01:29:15,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132211690] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:29:15,867 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:29:15,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-09-01 01:29:15,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255212849] [2023-09-01 01:29:15,867 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:29:15,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 01:29:15,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:15,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 01:29:15,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-09-01 01:29:33,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 189 out of 476 [2023-09-01 01:29:33,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 75 transitions, 475 flow. Second operand has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:33,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:33,517 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 189 of 476 [2023-09-01 01:29:33,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:34,124 INFO L130 PetriNetUnfolder]: 835/1340 cut-off events. [2023-09-01 01:29:34,124 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 01:29:34,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 1340 events. 835/1340 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 6379 event pairs, 679 based on Foata normal form. 2/462 useless extension candidates. Maximal degree in co-relation 2744. Up to 1318 conditions per place. [2023-09-01 01:29:34,129 INFO L137 encePairwiseOnDemand]: 472/476 looper letters, 40 selfloop transitions, 12 changer transitions 0/53 dead transitions. [2023-09-01 01:29:34,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 53 transitions, 335 flow [2023-09-01 01:29:34,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:29:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:29:34,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1566 transitions. [2023-09-01 01:29:34,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4112394957983193 [2023-09-01 01:29:34,137 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1566 transitions. [2023-09-01 01:29:34,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1566 transitions. [2023-09-01 01:29:34,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:34,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1566 transitions. [2023-09-01 01:29:34,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 195.75) internal successors, (1566), 8 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:34,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:34,151 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:34,151 INFO L175 Difference]: Start difference. First operand has 74 places, 75 transitions, 475 flow. Second operand 8 states and 1566 transitions. [2023-09-01 01:29:34,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 53 transitions, 335 flow [2023-09-01 01:29:34,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 53 transitions, 288 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-09-01 01:29:34,154 INFO L231 Difference]: Finished difference. Result has 65 places, 53 transitions, 208 flow [2023-09-01 01:29:34,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=208, PETRI_PLACES=65, PETRI_TRANSITIONS=53} [2023-09-01 01:29:34,155 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2023-09-01 01:29:34,155 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 53 transitions, 208 flow [2023-09-01 01:29:34,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 190.0) internal successors, (4560), 24 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:34,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:34,158 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1] [2023-09-01 01:29:34,170 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-09-01 01:29:34,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:34,371 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:34,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:34,372 INFO L85 PathProgramCache]: Analyzing trace with hash -426768858, now seen corresponding path program 1 times [2023-09-01 01:29:34,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:34,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [192343906] [2023-09-01 01:29:34,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:34,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:34,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:34,374 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:34,374 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-09-01 01:29:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:34,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 01:29:34,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:34,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:34,606 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2023-09-01 01:29:34,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 33 [2023-09-01 01:29:34,693 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 01:29:34,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-09-01 01:29:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:34,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:34,749 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:34,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [192343906] [2023-09-01 01:29:34,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [192343906] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:34,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:34,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:29:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847716168] [2023-09-01 01:29:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:34,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:29:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:34,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:29:34,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:29:34,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 476 [2023-09-01 01:29:34,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 53 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:34,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:34,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 476 [2023-09-01 01:29:34,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:35,183 INFO L130 PetriNetUnfolder]: 625/1029 cut-off events. [2023-09-01 01:29:35,183 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 01:29:35,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 1029 events. 625/1029 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 4733 event pairs, 504 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 2108. Up to 1019 conditions per place. [2023-09-01 01:29:35,186 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 49 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-09-01 01:29:35,186 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 51 transitions, 294 flow [2023-09-01 01:29:35,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:29:35,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:29:35,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 656 transitions. [2023-09-01 01:29:35,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45938375350140054 [2023-09-01 01:29:35,195 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 656 transitions. [2023-09-01 01:29:35,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 656 transitions. [2023-09-01 01:29:35,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:35,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 656 transitions. [2023-09-01 01:29:35,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 218.66666666666666) internal successors, (656), 3 states have internal predecessors, (656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:35,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:35,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:35,200 INFO L175 Difference]: Start difference. First operand has 65 places, 53 transitions, 208 flow. Second operand 3 states and 656 transitions. [2023-09-01 01:29:35,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 51 transitions, 294 flow [2023-09-01 01:29:35,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 270 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 01:29:35,204 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 172 flow [2023-09-01 01:29:35,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-09-01 01:29:35,206 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-09-01 01:29:35,206 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 172 flow [2023-09-01 01:29:35,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:35,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:35,207 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1] [2023-09-01 01:29:35,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:35,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:35,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:35,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:35,418 INFO L85 PathProgramCache]: Analyzing trace with hash -426768860, now seen corresponding path program 2 times [2023-09-01 01:29:35,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:35,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1618896007] [2023-09-01 01:29:35,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:29:35,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:35,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:35,420 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:35,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-09-01 01:29:35,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:29:35,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:29:35,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:29:35,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:35,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:35,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:35,537 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 01:29:35,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-09-01 01:29:35,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-09-01 01:29:35,651 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 01:29:35,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-09-01 01:29:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:35,787 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:35,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:35,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1618896007] [2023-09-01 01:29:35,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1618896007] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:35,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:35,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 01:29:35,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676887659] [2023-09-01 01:29:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:35,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:29:35,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:29:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:29:36,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 476 [2023-09-01 01:29:36,204 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 172 flow. Second operand has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:36,204 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:36,204 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 476 [2023-09-01 01:29:36,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:36,516 INFO L130 PetriNetUnfolder]: 415/718 cut-off events. [2023-09-01 01:29:36,517 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-09-01 01:29:36,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1484 conditions, 718 events. 415/718 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3216 event pairs, 329 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 1472. Up to 704 conditions per place. [2023-09-01 01:29:36,519 INFO L137 encePairwiseOnDemand]: 472/476 looper letters, 46 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-09-01 01:29:36,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 49 transitions, 254 flow [2023-09-01 01:29:36,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 01:29:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 01:29:36,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 854 transitions. [2023-09-01 01:29:36,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4485294117647059 [2023-09-01 01:29:36,521 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 854 transitions. [2023-09-01 01:29:36,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 854 transitions. [2023-09-01 01:29:36,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:36,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 854 transitions. [2023-09-01 01:29:36,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.5) internal successors, (854), 4 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:36,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:36,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:36,526 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 172 flow. Second operand 4 states and 854 transitions. [2023-09-01 01:29:36,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 49 transitions, 254 flow [2023-09-01 01:29:36,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 49 transitions, 253 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:29:36,528 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 161 flow [2023-09-01 01:29:36,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-09-01 01:29:36,529 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-09-01 01:29:36,529 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 161 flow [2023-09-01 01:29:36,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.25) internal successors, (817), 4 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:36,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:36,530 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-09-01 01:29:36,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-09-01 01:29:36,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:36,739 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:36,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:36,739 INFO L85 PathProgramCache]: Analyzing trace with hash -2102960439, now seen corresponding path program 1 times [2023-09-01 01:29:36,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:36,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669623357] [2023-09-01 01:29:36,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:36,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:36,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:36,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:36,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-09-01 01:29:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:36,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 01:29:36,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:36,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:36,958 INFO L321 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-09-01 01:29:36,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2023-09-01 01:29:36,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:29:37,022 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 01:29:37,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-09-01 01:29:37,131 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:37,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:37,131 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669623357] [2023-09-01 01:29:37,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669623357] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:37,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:37,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 01:29:37,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711226470] [2023-09-01 01:29:37,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:37,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:29:37,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:37,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:29:37,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:29:37,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 476 [2023-09-01 01:29:37,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:37,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:37,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 476 [2023-09-01 01:29:37,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:37,632 INFO L130 PetriNetUnfolder]: 392/673 cut-off events. [2023-09-01 01:29:37,632 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 01:29:37,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 673 events. 392/673 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 2929 event pairs, 310 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1385. Up to 660 conditions per place. [2023-09-01 01:29:37,634 INFO L137 encePairwiseOnDemand]: 472/476 looper letters, 44 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-09-01 01:29:37,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 249 flow [2023-09-01 01:29:37,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 01:29:37,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 01:29:37,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 852 transitions. [2023-09-01 01:29:37,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4474789915966387 [2023-09-01 01:29:37,637 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 852 transitions. [2023-09-01 01:29:37,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 852 transitions. [2023-09-01 01:29:37,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:37,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 852 transitions. [2023-09-01 01:29:37,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 213.0) internal successors, (852), 4 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:37,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:37,643 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:37,643 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 161 flow. Second operand 4 states and 852 transitions. [2023-09-01 01:29:37,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 249 flow [2023-09-01 01:29:37,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 246 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 01:29:37,645 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 158 flow [2023-09-01 01:29:37,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2023-09-01 01:29:37,645 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-09-01 01:29:37,645 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 158 flow [2023-09-01 01:29:37,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 204.75) internal successors, (819), 4 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:37,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:37,646 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1] [2023-09-01 01:29:37,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:37,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:37,857 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:37,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2102960440, now seen corresponding path program 1 times [2023-09-01 01:29:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071514386] [2023-09-01 01:29:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:37,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:37,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:37,859 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:37,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-09-01 01:29:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:38,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 01:29:38,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:38,056 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-09-01 01:29:38,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 33 [2023-09-01 01:29:38,091 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 01:29:38,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-09-01 01:29:38,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:38,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:38,114 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:38,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071514386] [2023-09-01 01:29:38,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071514386] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:38,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:38,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:29:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131141666] [2023-09-01 01:29:38,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:38,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:29:38,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:29:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:29:38,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 476 [2023-09-01 01:29:38,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:38,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:38,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 476 [2023-09-01 01:29:38,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:38,453 INFO L130 PetriNetUnfolder]: 369/628 cut-off events. [2023-09-01 01:29:38,453 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-09-01 01:29:38,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1309 conditions, 628 events. 369/628 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 2699 event pairs, 291 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 1297. Up to 622 conditions per place. [2023-09-01 01:29:38,456 INFO L137 encePairwiseOnDemand]: 473/476 looper letters, 43 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-09-01 01:29:38,456 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 242 flow [2023-09-01 01:29:38,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:29:38,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:29:38,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-09-01 01:29:38,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45098039215686275 [2023-09-01 01:29:38,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-09-01 01:29:38,463 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-09-01 01:29:38,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:38,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-09-01 01:29:38,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:38,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:38,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:38,467 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 158 flow. Second operand 3 states and 644 transitions. [2023-09-01 01:29:38,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 242 flow [2023-09-01 01:29:38,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 01:29:38,469 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 153 flow [2023-09-01 01:29:38,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-09-01 01:29:38,470 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-09-01 01:29:38,470 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 153 flow [2023-09-01 01:29:38,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 204.33333333333334) internal successors, (613), 3 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:38,471 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:38,471 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:38,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-09-01 01:29:38,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:38,682 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:38,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:38,682 INFO L85 PathProgramCache]: Analyzing trace with hash -767262096, now seen corresponding path program 1 times [2023-09-01 01:29:38,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:38,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347831181] [2023-09-01 01:29:38,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:38,683 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:38,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:38,684 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:38,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-09-01 01:29:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:38,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 01:29:38,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:38,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-09-01 01:29:38,875 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:38,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:38,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:38,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347831181] [2023-09-01 01:29:38,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347831181] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:38,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:38,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:29:38,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162392716] [2023-09-01 01:29:38,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:38,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:29:38,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:38,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:29:38,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:29:39,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:29:39,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 153 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:39,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:39,112 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:29:39,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:39,272 INFO L130 PetriNetUnfolder]: 281/482 cut-off events. [2023-09-01 01:29:39,272 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 01:29:39,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 482 events. 281/482 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 1916 event pairs, 213 based on Foata normal form. 0/258 useless extension candidates. Maximal degree in co-relation 1003. Up to 464 conditions per place. [2023-09-01 01:29:39,274 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 39 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-09-01 01:29:39,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 42 transitions, 229 flow [2023-09-01 01:29:39,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 01:29:39,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 01:29:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 800 transitions. [2023-09-01 01:29:39,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42016806722689076 [2023-09-01 01:29:39,277 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 800 transitions. [2023-09-01 01:29:39,277 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 800 transitions. [2023-09-01 01:29:39,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:39,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 800 transitions. [2023-09-01 01:29:39,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 200.0) internal successors, (800), 4 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:39,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:39,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:39,282 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 153 flow. Second operand 4 states and 800 transitions. [2023-09-01 01:29:39,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 42 transitions, 229 flow [2023-09-01 01:29:39,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 42 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:29:39,284 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 150 flow [2023-09-01 01:29:39,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-09-01 01:29:39,284 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-09-01 01:29:39,285 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 150 flow [2023-09-01 01:29:39,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:39,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:39,285 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:39,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-09-01 01:29:39,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:39,497 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:39,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:39,498 INFO L85 PathProgramCache]: Analyzing trace with hash -767262236, now seen corresponding path program 1 times [2023-09-01 01:29:39,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:39,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973362868] [2023-09-01 01:29:39,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:39,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:39,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:39,499 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:39,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-09-01 01:29:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:39,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:29:39,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:39,701 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:29:39,702 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:29:39,739 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:29:39,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:29:39,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:39,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 01:29:39,810 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 01:29:39,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 01:29:39,863 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:39,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:39,863 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:39,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973362868] [2023-09-01 01:29:39,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973362868] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:39,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:39,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:29:39,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096130829] [2023-09-01 01:29:39,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:39,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:29:39,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:39,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:29:39,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:29:40,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:29:40,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:40,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:40,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:29:40,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:40,466 INFO L130 PetriNetUnfolder]: 501/864 cut-off events. [2023-09-01 01:29:40,466 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 01:29:40,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1768 conditions, 864 events. 501/864 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4075 event pairs, 213 based on Foata normal form. 0/484 useless extension candidates. Maximal degree in co-relation 1756. Up to 470 conditions per place. [2023-09-01 01:29:40,470 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 61 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2023-09-01 01:29:40,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 66 transitions, 331 flow [2023-09-01 01:29:40,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:29:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:29:40,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2023-09-01 01:29:40,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43025210084033616 [2023-09-01 01:29:40,476 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2023-09-01 01:29:40,476 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2023-09-01 01:29:40,476 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:40,476 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2023-09-01 01:29:40,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:40,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:40,481 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:40,481 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 150 flow. Second operand 5 states and 1024 transitions. [2023-09-01 01:29:40,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 66 transitions, 331 flow [2023-09-01 01:29:40,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 66 transitions, 328 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 01:29:40,483 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 165 flow [2023-09-01 01:29:40,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-09-01 01:29:40,484 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2023-09-01 01:29:40,484 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 165 flow [2023-09-01 01:29:40,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.6) internal successors, (973), 5 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:40,485 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:40,485 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:40,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:40,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:40,695 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:40,696 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:40,696 INFO L85 PathProgramCache]: Analyzing trace with hash -767262095, now seen corresponding path program 1 times [2023-09-01 01:29:40,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:40,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124049914] [2023-09-01 01:29:40,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:40,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:40,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:40,698 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:40,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-09-01 01:29:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:40,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 01:29:40,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:40,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:29:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:40,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:40,889 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:40,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124049914] [2023-09-01 01:29:40,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124049914] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:40,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:40,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:29:40,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376185077] [2023-09-01 01:29:40,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:40,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:29:40,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:40,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:29:40,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:29:41,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 476 [2023-09-01 01:29:41,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:41,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:41,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 476 [2023-09-01 01:29:41,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:41,419 INFO L130 PetriNetUnfolder]: 461/796 cut-off events. [2023-09-01 01:29:41,419 INFO L131 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2023-09-01 01:29:41,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1716 conditions, 796 events. 461/796 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3659 event pairs, 213 based on Foata normal form. 14/516 useless extension candidates. Maximal degree in co-relation 1703. Up to 464 conditions per place. [2023-09-01 01:29:41,422 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 59 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-09-01 01:29:41,422 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 64 transitions, 336 flow [2023-09-01 01:29:41,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:29:41,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:29:41,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1042 transitions. [2023-09-01 01:29:41,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43781512605042017 [2023-09-01 01:29:41,431 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1042 transitions. [2023-09-01 01:29:41,431 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1042 transitions. [2023-09-01 01:29:41,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:41,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1042 transitions. [2023-09-01 01:29:41,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.4) internal successors, (1042), 5 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:41,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:41,437 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:41,437 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 165 flow. Second operand 5 states and 1042 transitions. [2023-09-01 01:29:41,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 64 transitions, 336 flow [2023-09-01 01:29:41,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 330 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 01:29:41,440 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 173 flow [2023-09-01 01:29:41,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-09-01 01:29:41,441 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2023-09-01 01:29:41,441 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 173 flow [2023-09-01 01:29:41,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:41,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:41,442 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:41,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:41,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:41,653 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:41,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:41,653 INFO L85 PathProgramCache]: Analyzing trace with hash -767262237, now seen corresponding path program 1 times [2023-09-01 01:29:41,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:41,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1024475792] [2023-09-01 01:29:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:41,655 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:41,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:41,656 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:41,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-09-01 01:29:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:41,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 01:29:41,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:41,843 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:29:41,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:29:41,873 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-09-01 01:29:41,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-09-01 01:29:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:41,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:41,891 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:41,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1024475792] [2023-09-01 01:29:41,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1024475792] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:41,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:41,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 01:29:41,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646160908] [2023-09-01 01:29:41,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:29:41,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:29:41,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:29:42,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:29:42,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 173 flow. Second operand has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:42,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:42,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:29:42,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:42,178 INFO L130 PetriNetUnfolder]: 358/599 cut-off events. [2023-09-01 01:29:42,179 INFO L131 PetriNetUnfolder]: For 107/107 co-relation queries the response was YES. [2023-09-01 01:29:42,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 599 events. 358/599 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2318 event pairs, 260 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 1371. Up to 593 conditions per place. [2023-09-01 01:29:42,181 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 38 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-09-01 01:29:42,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 40 transitions, 247 flow [2023-09-01 01:29:42,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 01:29:42,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 01:29:42,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 798 transitions. [2023-09-01 01:29:42,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41911764705882354 [2023-09-01 01:29:42,183 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 798 transitions. [2023-09-01 01:29:42,183 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 798 transitions. [2023-09-01 01:29:42,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:42,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 798 transitions. [2023-09-01 01:29:42,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 199.5) internal successors, (798), 4 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:42,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:42,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:42,187 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 173 flow. Second operand 4 states and 798 transitions. [2023-09-01 01:29:42,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 40 transitions, 247 flow [2023-09-01 01:29:42,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 40 transitions, 239 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 01:29:42,188 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 163 flow [2023-09-01 01:29:42,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-09-01 01:29:42,189 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-09-01 01:29:42,189 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 163 flow [2023-09-01 01:29:42,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 193.0) internal successors, (772), 4 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:42,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:42,189 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:42,202 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:42,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:42,400 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:42,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:42,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1394070944, now seen corresponding path program 1 times [2023-09-01 01:29:42,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:42,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [653392221] [2023-09-01 01:29:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:42,401 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:42,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:42,402 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:42,402 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-09-01 01:29:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:42,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 01:29:42,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:42,550 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:29:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:42,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:42,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:42,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [653392221] [2023-09-01 01:29:42,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [653392221] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:42,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:42,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:29:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642918205] [2023-09-01 01:29:42,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:42,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:29:42,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:42,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:29:42,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:29:42,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 197 out of 476 [2023-09-01 01:29:42,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 163 flow. Second operand has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:42,876 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:42,876 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 197 of 476 [2023-09-01 01:29:42,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:43,165 INFO L130 PetriNetUnfolder]: 495/827 cut-off events. [2023-09-01 01:29:43,165 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-09-01 01:29:43,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 827 events. 495/827 cut-off events. For 147/147 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 3530 event pairs, 230 based on Foata normal form. 0/584 useless extension candidates. Maximal degree in co-relation 1840. Up to 529 conditions per place. [2023-09-01 01:29:43,168 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 56 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-09-01 01:29:43,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 343 flow [2023-09-01 01:29:43,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:29:43,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:29:43,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1036 transitions. [2023-09-01 01:29:43,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43529411764705883 [2023-09-01 01:29:43,171 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1036 transitions. [2023-09-01 01:29:43,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1036 transitions. [2023-09-01 01:29:43,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:43,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1036 transitions. [2023-09-01 01:29:43,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:43,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:43,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:43,177 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 163 flow. Second operand 5 states and 1036 transitions. [2023-09-01 01:29:43,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 343 flow [2023-09-01 01:29:43,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 340 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 01:29:43,179 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 176 flow [2023-09-01 01:29:43,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-09-01 01:29:43,180 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-09-01 01:29:43,180 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 176 flow [2023-09-01 01:29:43,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 199.0) internal successors, (995), 5 states have internal predecessors, (995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:43,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:43,181 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:43,191 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:43,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:43,389 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:43,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:43,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1394070986, now seen corresponding path program 1 times [2023-09-01 01:29:43,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:43,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379234410] [2023-09-01 01:29:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:43,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:43,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:43,391 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:43,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-09-01 01:29:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:43,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:29:43,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:43,654 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:29:43,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:29:43,689 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:29:43,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:29:43,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:43,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 01:29:43,750 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 01:29:43,750 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 01:29:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:43,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:43,793 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379234410] [2023-09-01 01:29:43,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379234410] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:43,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:29:43,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186448233] [2023-09-01 01:29:43,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:43,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:29:43,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:43,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:29:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:29:44,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:29:44,151 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 176 flow. Second operand has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:44,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:44,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:29:44,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:44,396 INFO L130 PetriNetUnfolder]: 438/736 cut-off events. [2023-09-01 01:29:44,396 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-09-01 01:29:44,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1828 conditions, 736 events. 438/736 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3002 event pairs, 230 based on Foata normal form. 0/603 useless extension candidates. Maximal degree in co-relation 1813. Up to 535 conditions per place. [2023-09-01 01:29:44,398 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 55 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-09-01 01:29:44,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 350 flow [2023-09-01 01:29:44,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:29:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:29:44,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1015 transitions. [2023-09-01 01:29:44,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4264705882352941 [2023-09-01 01:29:44,400 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1015 transitions. [2023-09-01 01:29:44,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1015 transitions. [2023-09-01 01:29:44,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:44,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1015 transitions. [2023-09-01 01:29:44,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.0) internal successors, (1015), 5 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:44,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:44,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:44,405 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 176 flow. Second operand 5 states and 1015 transitions. [2023-09-01 01:29:44,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 350 flow [2023-09-01 01:29:44,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 60 transitions, 344 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 01:29:44,407 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 182 flow [2023-09-01 01:29:44,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-09-01 01:29:44,407 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 5 predicate places. [2023-09-01 01:29:44,407 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 182 flow [2023-09-01 01:29:44,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.0) internal successors, (975), 5 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:44,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:44,408 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:44,419 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-09-01 01:29:44,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:44,619 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:44,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:44,619 INFO L85 PathProgramCache]: Analyzing trace with hash 307453228, now seen corresponding path program 1 times [2023-09-01 01:29:44,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:44,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1738560471] [2023-09-01 01:29:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:44,619 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:44,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:44,620 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:44,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-09-01 01:29:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:44,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-09-01 01:29:44,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:44,776 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:44,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:29:44,777 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:44,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1738560471] [2023-09-01 01:29:44,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1738560471] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:29:44,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:29:44,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:29:44,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602772187] [2023-09-01 01:29:44,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:29:44,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:29:44,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:44,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:29:44,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:29:44,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 476 [2023-09-01 01:29:44,785 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:44,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:44,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 476 [2023-09-01 01:29:44,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:45,040 INFO L130 PetriNetUnfolder]: 526/934 cut-off events. [2023-09-01 01:29:45,040 INFO L131 PetriNetUnfolder]: For 506/506 co-relation queries the response was YES. [2023-09-01 01:29:45,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2417 conditions, 934 events. 526/934 cut-off events. For 506/506 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4303 event pairs, 324 based on Foata normal form. 32/854 useless extension candidates. Maximal degree in co-relation 2401. Up to 696 conditions per place. [2023-09-01 01:29:45,043 INFO L137 encePairwiseOnDemand]: 474/476 looper letters, 53 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-09-01 01:29:45,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 55 transitions, 337 flow [2023-09-01 01:29:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:29:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:29:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-09-01 01:29:45,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677871148459384 [2023-09-01 01:29:45,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-09-01 01:29:45,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-09-01 01:29:45,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:45,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-09-01 01:29:45,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:45,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:45,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 476.0) internal successors, (1904), 4 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:45,049 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 182 flow. Second operand 3 states and 668 transitions. [2023-09-01 01:29:45,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 55 transitions, 337 flow [2023-09-01 01:29:45,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 325 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 01:29:45,051 INFO L231 Difference]: Finished difference. Result has 59 places, 41 transitions, 181 flow [2023-09-01 01:29:45,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=59, PETRI_TRANSITIONS=41} [2023-09-01 01:29:45,051 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 4 predicate places. [2023-09-01 01:29:45,052 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 41 transitions, 181 flow [2023-09-01 01:29:45,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 211.66666666666666) internal successors, (635), 3 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:45,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:45,052 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:45,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-09-01 01:29:45,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:45,262 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:45,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:45,262 INFO L85 PathProgramCache]: Analyzing trace with hash 266531624, now seen corresponding path program 1 times [2023-09-01 01:29:45,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:45,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [11154868] [2023-09-01 01:29:45,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:45,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:45,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:45,264 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:45,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-09-01 01:29:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:45,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 01:29:45,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:45,533 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:29:45,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:29:45,567 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:29:45,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:29:45,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:45,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 01:29:45,624 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 01:29:45,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 01:29:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:45,693 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:29:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:46,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:46,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [11154868] [2023-09-01 01:29:46,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [11154868] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:29:46,038 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:29:46,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-09-01 01:29:46,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318027246] [2023-09-01 01:29:46,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:29:46,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 01:29:46,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:46,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 01:29:46,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 01:29:48,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:29:48,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 41 transitions, 181 flow. Second operand has 10 states, 10 states have (on average 193.2) internal successors, (1932), 10 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:48,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:48,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:29:48,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:49,679 INFO L130 PetriNetUnfolder]: 1147/1983 cut-off events. [2023-09-01 01:29:49,679 INFO L131 PetriNetUnfolder]: For 843/843 co-relation queries the response was YES. [2023-09-01 01:29:49,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4988 conditions, 1983 events. 1147/1983 cut-off events. For 843/843 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 10677 event pairs, 306 based on Foata normal form. 138/1868 useless extension candidates. Maximal degree in co-relation 4971. Up to 671 conditions per place. [2023-09-01 01:29:49,686 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 115 selfloop transitions, 7 changer transitions 0/123 dead transitions. [2023-09-01 01:29:49,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 123 transitions, 701 flow [2023-09-01 01:29:49,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:29:49,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:29:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1640 transitions. [2023-09-01 01:29:49,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43067226890756305 [2023-09-01 01:29:49,690 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1640 transitions. [2023-09-01 01:29:49,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1640 transitions. [2023-09-01 01:29:49,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:49,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1640 transitions. [2023-09-01 01:29:49,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 205.0) internal successors, (1640), 8 states have internal predecessors, (1640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:49,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:49,695 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:49,696 INFO L175 Difference]: Start difference. First operand has 59 places, 41 transitions, 181 flow. Second operand 8 states and 1640 transitions. [2023-09-01 01:29:49,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 123 transitions, 701 flow [2023-09-01 01:29:49,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 123 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:29:49,698 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 220 flow [2023-09-01 01:29:49,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-09-01 01:29:49,699 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 13 predicate places. [2023-09-01 01:29:49,699 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 220 flow [2023-09-01 01:29:49,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 193.2) internal successors, (1932), 10 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:49,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:49,700 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:49,708 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:49,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:49,900 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:49,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:49,901 INFO L85 PathProgramCache]: Analyzing trace with hash 266531582, now seen corresponding path program 1 times [2023-09-01 01:29:49,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:49,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431641213] [2023-09-01 01:29:49,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:49,901 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:49,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:49,902 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:49,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-09-01 01:29:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:50,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 01:29:50,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:50,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:29:50,158 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:50,158 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:29:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:50,367 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:50,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431641213] [2023-09-01 01:29:50,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431641213] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:29:50,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:29:50,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-09-01 01:29:50,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088544450] [2023-09-01 01:29:50,368 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:29:50,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 01:29:50,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:50,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 01:29:50,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 01:29:52,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 476 [2023-09-01 01:29:52,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 220 flow. Second operand has 10 states, 10 states have (on average 197.0) internal successors, (1970), 10 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:52,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:29:52,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 476 [2023-09-01 01:29:52,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:29:53,017 INFO L130 PetriNetUnfolder]: 940/1638 cut-off events. [2023-09-01 01:29:53,017 INFO L131 PetriNetUnfolder]: For 1174/1174 co-relation queries the response was YES. [2023-09-01 01:29:53,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4645 conditions, 1638 events. 940/1638 cut-off events. For 1174/1174 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 8435 event pairs, 243 based on Foata normal form. 138/1719 useless extension candidates. Maximal degree in co-relation 4625. Up to 550 conditions per place. [2023-09-01 01:29:53,026 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 111 selfloop transitions, 8 changer transitions 0/120 dead transitions. [2023-09-01 01:29:53,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 706 flow [2023-09-01 01:29:53,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:29:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:29:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1669 transitions. [2023-09-01 01:29:53,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4382878151260504 [2023-09-01 01:29:53,030 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1669 transitions. [2023-09-01 01:29:53,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1669 transitions. [2023-09-01 01:29:53,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:29:53,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1669 transitions. [2023-09-01 01:29:53,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 208.625) internal successors, (1669), 8 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:53,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:53,038 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:53,038 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 220 flow. Second operand 8 states and 1669 transitions. [2023-09-01 01:29:53,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 706 flow [2023-09-01 01:29:53,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 695 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-09-01 01:29:53,044 INFO L231 Difference]: Finished difference. Result has 75 places, 44 transitions, 238 flow [2023-09-01 01:29:53,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=238, PETRI_PLACES=75, PETRI_TRANSITIONS=44} [2023-09-01 01:29:53,044 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2023-09-01 01:29:53,044 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 44 transitions, 238 flow [2023-09-01 01:29:53,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.0) internal successors, (1970), 10 states have internal predecessors, (1970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:29:53,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:29:53,045 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:29:53,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-09-01 01:29:53,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:53,253 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:29:53,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:29:53,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1101037495, now seen corresponding path program 1 times [2023-09-01 01:29:53,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:29:53,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1376332002] [2023-09-01 01:29:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:29:53,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:29:53,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:29:53,256 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:29:53,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-09-01 01:29:53,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:29:53,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 01:29:53,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:29:53,511 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:29:53,511 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:29:53,565 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:29:53,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:29:53,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:29:53,625 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 01:29:53,636 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 01:29:53,636 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 01:29:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:53,706 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:29:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:29:54,070 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:29:54,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1376332002] [2023-09-01 01:29:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1376332002] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:29:54,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:29:54,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-09-01 01:29:54,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604024717] [2023-09-01 01:29:54,070 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:29:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 01:29:54,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:29:54,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 01:29:54,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 01:29:57,254 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 01:29:59,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 01:30:03,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 01:30:05,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 01:30:07,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 01:30:08,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-09-01 01:30:08,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 476 [2023-09-01 01:30:08,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 44 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 188.6) internal successors, (1886), 10 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:08,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:08,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 476 [2023-09-01 01:30:08,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:09,862 INFO L130 PetriNetUnfolder]: 2097/3610 cut-off events. [2023-09-01 01:30:09,863 INFO L131 PetriNetUnfolder]: For 7872/7872 co-relation queries the response was YES. [2023-09-01 01:30:09,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10897 conditions, 3610 events. 2097/3610 cut-off events. For 7872/7872 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 18699 event pairs, 153 based on Foata normal form. 168/3638 useless extension candidates. Maximal degree in co-relation 10874. Up to 898 conditions per place. [2023-09-01 01:30:09,876 INFO L137 encePairwiseOnDemand]: 468/476 looper letters, 128 selfloop transitions, 9 changer transitions 0/137 dead transitions. [2023-09-01 01:30:09,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 137 transitions, 968 flow [2023-09-01 01:30:09,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:30:09,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:30:09,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1603 transitions. [2023-09-01 01:30:09,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4209558823529412 [2023-09-01 01:30:09,879 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1603 transitions. [2023-09-01 01:30:09,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1603 transitions. [2023-09-01 01:30:09,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:09,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1603 transitions. [2023-09-01 01:30:09,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 200.375) internal successors, (1603), 8 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:09,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:09,884 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:09,884 INFO L175 Difference]: Start difference. First operand has 75 places, 44 transitions, 238 flow. Second operand 8 states and 1603 transitions. [2023-09-01 01:30:09,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 137 transitions, 968 flow [2023-09-01 01:30:09,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 137 transitions, 840 flow, removed 20 selfloop flow, removed 10 redundant places. [2023-09-01 01:30:09,889 INFO L231 Difference]: Finished difference. Result has 75 places, 47 transitions, 265 flow [2023-09-01 01:30:09,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=265, PETRI_PLACES=75, PETRI_TRANSITIONS=47} [2023-09-01 01:30:09,890 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 20 predicate places. [2023-09-01 01:30:09,890 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 47 transitions, 265 flow [2023-09-01 01:30:09,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 188.6) internal successors, (1886), 10 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:09,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:09,890 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:09,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:10,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:10,101 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:10,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:10,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1101037354, now seen corresponding path program 1 times [2023-09-01 01:30:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:10,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [236875315] [2023-09-01 01:30:10,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:30:10,102 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:10,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:10,103 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:10,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-09-01 01:30:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:30:10,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 01:30:10,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:10,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:30:10,359 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:10,359 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:30:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:10,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:10,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [236875315] [2023-09-01 01:30:10,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [236875315] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:30:10,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:30:10,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-09-01 01:30:10,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756325163] [2023-09-01 01:30:10,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:30:10,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 01:30:10,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 01:30:10,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 01:30:12,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 476 [2023-09-01 01:30:12,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 47 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 197.2) internal successors, (1972), 10 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:12,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:12,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 476 [2023-09-01 01:30:12,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:13,390 INFO L130 PetriNetUnfolder]: 1769/3170 cut-off events. [2023-09-01 01:30:13,390 INFO L131 PetriNetUnfolder]: For 4052/4052 co-relation queries the response was YES. [2023-09-01 01:30:13,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8736 conditions, 3170 events. 1769/3170 cut-off events. For 4052/4052 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 16594 event pairs, 231 based on Foata normal form. 168/3338 useless extension candidates. Maximal degree in co-relation 8713. Up to 691 conditions per place. [2023-09-01 01:30:13,400 INFO L137 encePairwiseOnDemand]: 468/476 looper letters, 120 selfloop transitions, 9 changer transitions 0/130 dead transitions. [2023-09-01 01:30:13,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 130 transitions, 845 flow [2023-09-01 01:30:13,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:30:13,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:30:13,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1667 transitions. [2023-09-01 01:30:13,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4377626050420168 [2023-09-01 01:30:13,403 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1667 transitions. [2023-09-01 01:30:13,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1667 transitions. [2023-09-01 01:30:13,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:13,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1667 transitions. [2023-09-01 01:30:13,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 208.375) internal successors, (1667), 8 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:13,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:13,407 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:13,407 INFO L175 Difference]: Start difference. First operand has 75 places, 47 transitions, 265 flow. Second operand 8 states and 1667 transitions. [2023-09-01 01:30:13,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 130 transitions, 845 flow [2023-09-01 01:30:13,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 130 transitions, 830 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-09-01 01:30:13,415 INFO L231 Difference]: Finished difference. Result has 78 places, 47 transitions, 273 flow [2023-09-01 01:30:13,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=273, PETRI_PLACES=78, PETRI_TRANSITIONS=47} [2023-09-01 01:30:13,415 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 23 predicate places. [2023-09-01 01:30:13,415 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 47 transitions, 273 flow [2023-09-01 01:30:13,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 197.2) internal successors, (1972), 10 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:13,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:13,416 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:13,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-09-01 01:30:13,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:13,621 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:13,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:13,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1146929846, now seen corresponding path program 2 times [2023-09-01 01:30:13,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:13,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [529204532] [2023-09-01 01:30:13,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:30:13,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:13,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:13,625 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:13,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-09-01 01:30:13,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:30:13,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:13,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:30:13,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:13,827 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:30:13,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:30:13,869 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:30:13,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:30:13,931 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-09-01 01:30:13,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 01:30:13,942 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 01:30:13,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 01:30:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-09-01 01:30:14,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:14,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [529204532] [2023-09-01 01:30:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [529204532] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:14,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:14,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:30:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753081157] [2023-09-01 01:30:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:14,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:30:14,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:30:14,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:30:14,537 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:30:14,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 47 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:14,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:14,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:30:14,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:14,960 INFO L130 PetriNetUnfolder]: 1601/2849 cut-off events. [2023-09-01 01:30:14,960 INFO L131 PetriNetUnfolder]: For 3415/3415 co-relation queries the response was YES. [2023-09-01 01:30:14,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8289 conditions, 2849 events. 1601/2849 cut-off events. For 3415/3415 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 15150 event pairs, 1361 based on Foata normal form. 84/2931 useless extension candidates. Maximal degree in co-relation 8266. Up to 2766 conditions per place. [2023-09-01 01:30:14,972 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 41 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-09-01 01:30:14,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 45 transitions, 351 flow [2023-09-01 01:30:14,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:30:14,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:30:14,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 993 transitions. [2023-09-01 01:30:14,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41722689075630254 [2023-09-01 01:30:14,974 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 993 transitions. [2023-09-01 01:30:14,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 993 transitions. [2023-09-01 01:30:14,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:14,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 993 transitions. [2023-09-01 01:30:14,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:14,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:14,977 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:14,977 INFO L175 Difference]: Start difference. First operand has 78 places, 47 transitions, 273 flow. Second operand 5 states and 993 transitions. [2023-09-01 01:30:14,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 45 transitions, 351 flow [2023-09-01 01:30:14,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 45 transitions, 336 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 01:30:14,983 INFO L231 Difference]: Finished difference. Result has 73 places, 45 transitions, 254 flow [2023-09-01 01:30:14,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=254, PETRI_PLACES=73, PETRI_TRANSITIONS=45} [2023-09-01 01:30:14,983 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 18 predicate places. [2023-09-01 01:30:14,983 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 45 transitions, 254 flow [2023-09-01 01:30:14,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.2) internal successors, (976), 5 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:14,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:14,984 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:14,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:15,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:15,194 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:15,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:15,194 INFO L85 PathProgramCache]: Analyzing trace with hash -1146929888, now seen corresponding path program 2 times [2023-09-01 01:30:15,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:15,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [48624146] [2023-09-01 01:30:15,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:30:15,195 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:15,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:15,195 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:15,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-09-01 01:30:15,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 01:30:15,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:15,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 01:30:15,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:15,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:30:15,545 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:15,546 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:30:16,034 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:16,034 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:16,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [48624146] [2023-09-01 01:30:16,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [48624146] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:30:16,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:30:16,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-09-01 01:30:16,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334321354] [2023-09-01 01:30:16,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:30:16,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 01:30:16,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:16,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 01:30:16,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-09-01 01:30:21,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 476 [2023-09-01 01:30:21,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 45 transitions, 254 flow. Second operand has 16 states, 16 states have (on average 196.625) internal successors, (3146), 16 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:21,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:21,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 476 [2023-09-01 01:30:21,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:23,845 INFO L130 PetriNetUnfolder]: 3125/5443 cut-off events. [2023-09-01 01:30:23,845 INFO L131 PetriNetUnfolder]: For 6156/6156 co-relation queries the response was YES. [2023-09-01 01:30:23,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15326 conditions, 5443 events. 3125/5443 cut-off events. For 6156/6156 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 31511 event pairs, 441 based on Foata normal form. 504/5946 useless extension candidates. Maximal degree in co-relation 15303. Up to 1008 conditions per place. [2023-09-01 01:30:23,863 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 247 selfloop transitions, 13 changer transitions 0/261 dead transitions. [2023-09-01 01:30:23,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 261 transitions, 1840 flow [2023-09-01 01:30:23,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 01:30:23,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 01:30:23,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2922 transitions. [2023-09-01 01:30:23,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384753901560624 [2023-09-01 01:30:23,867 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2922 transitions. [2023-09-01 01:30:23,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2922 transitions. [2023-09-01 01:30:23,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:23,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2922 transitions. [2023-09-01 01:30:23,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 208.71428571428572) internal successors, (2922), 14 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:23,874 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:23,874 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:23,874 INFO L175 Difference]: Start difference. First operand has 73 places, 45 transitions, 254 flow. Second operand 14 states and 2922 transitions. [2023-09-01 01:30:23,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 261 transitions, 1840 flow [2023-09-01 01:30:23,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 261 transitions, 1835 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 01:30:23,883 INFO L231 Difference]: Finished difference. Result has 89 places, 51 transitions, 337 flow [2023-09-01 01:30:23,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=337, PETRI_PLACES=89, PETRI_TRANSITIONS=51} [2023-09-01 01:30:23,884 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 34 predicate places. [2023-09-01 01:30:23,884 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 51 transitions, 337 flow [2023-09-01 01:30:23,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 196.625) internal successors, (3146), 16 states have internal predecessors, (3146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:23,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:23,885 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:23,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:24,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:24,098 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:24,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:24,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2063559614, now seen corresponding path program 1 times [2023-09-01 01:30:24,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:24,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1080046607] [2023-09-01 01:30:24,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:30:24,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:24,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:24,100 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:24,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-09-01 01:30:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:30:24,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 01:30:24,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:24,305 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:24,306 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:24,306 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:24,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1080046607] [2023-09-01 01:30:24,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1080046607] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:24,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:24,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:30:24,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131227032] [2023-09-01 01:30:24,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:24,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:30:24,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:24,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:30:24,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:30:24,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 476 [2023-09-01 01:30:24,360 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 51 transitions, 337 flow. Second operand has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:24,360 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:24,360 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 476 [2023-09-01 01:30:24,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:25,240 INFO L130 PetriNetUnfolder]: 3193/5766 cut-off events. [2023-09-01 01:30:25,240 INFO L131 PetriNetUnfolder]: For 12310/12310 co-relation queries the response was YES. [2023-09-01 01:30:25,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18056 conditions, 5766 events. 3193/5766 cut-off events. For 12310/12310 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 35378 event pairs, 2145 based on Foata normal form. 4/5770 useless extension candidates. Maximal degree in co-relation 18027. Up to 4253 conditions per place. [2023-09-01 01:30:25,265 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 90 selfloop transitions, 5 changer transitions 2/98 dead transitions. [2023-09-01 01:30:25,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 98 transitions, 838 flow [2023-09-01 01:30:25,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:30:25,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:30:25,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1080 transitions. [2023-09-01 01:30:25,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2023-09-01 01:30:25,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1080 transitions. [2023-09-01 01:30:25,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1080 transitions. [2023-09-01 01:30:25,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:25,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1080 transitions. [2023-09-01 01:30:25,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 216.0) internal successors, (1080), 5 states have internal predecessors, (1080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:25,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:25,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 476.0) internal successors, (2856), 6 states have internal predecessors, (2856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:25,270 INFO L175 Difference]: Start difference. First operand has 89 places, 51 transitions, 337 flow. Second operand 5 states and 1080 transitions. [2023-09-01 01:30:25,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 98 transitions, 838 flow [2023-09-01 01:30:25,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 98 transitions, 728 flow, removed 39 selfloop flow, removed 7 redundant places. [2023-09-01 01:30:25,281 INFO L231 Difference]: Finished difference. Result has 88 places, 52 transitions, 317 flow [2023-09-01 01:30:25,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=88, PETRI_TRANSITIONS=52} [2023-09-01 01:30:25,282 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 33 predicate places. [2023-09-01 01:30:25,282 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 52 transitions, 317 flow [2023-09-01 01:30:25,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:25,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:25,283 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:25,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-09-01 01:30:25,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:25,489 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:25,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:25,489 INFO L85 PathProgramCache]: Analyzing trace with hash -2104014344, now seen corresponding path program 2 times [2023-09-01 01:30:25,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:25,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056308566] [2023-09-01 01:30:25,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:30:25,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:25,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:25,490 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:25,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-09-01 01:30:25,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:30:25,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:25,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 01:30:25,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:25,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:25,666 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056308566] [2023-09-01 01:30:25,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056308566] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:25,666 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:25,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:30:25,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458494936] [2023-09-01 01:30:25,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:25,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:30:25,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:25,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:30:25,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:30:25,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 476 [2023-09-01 01:30:25,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 52 transitions, 317 flow. Second operand has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:25,739 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:25,739 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 476 [2023-09-01 01:30:25,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:26,770 INFO L130 PetriNetUnfolder]: 3768/6791 cut-off events. [2023-09-01 01:30:26,770 INFO L131 PetriNetUnfolder]: For 10717/10717 co-relation queries the response was YES. [2023-09-01 01:30:26,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20060 conditions, 6791 events. 3768/6791 cut-off events. For 10717/10717 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 43060 event pairs, 1888 based on Foata normal form. 46/6837 useless extension candidates. Maximal degree in co-relation 20029. Up to 5573 conditions per place. [2023-09-01 01:30:26,800 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 77 selfloop transitions, 4 changer transitions 3/85 dead transitions. [2023-09-01 01:30:26,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 85 transitions, 655 flow [2023-09-01 01:30:26,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 01:30:26,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 01:30:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 870 transitions. [2023-09-01 01:30:26,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4569327731092437 [2023-09-01 01:30:26,802 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 870 transitions. [2023-09-01 01:30:26,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 870 transitions. [2023-09-01 01:30:26,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:26,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 870 transitions. [2023-09-01 01:30:26,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 217.5) internal successors, (870), 4 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:26,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:26,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:26,804 INFO L175 Difference]: Start difference. First operand has 88 places, 52 transitions, 317 flow. Second operand 4 states and 870 transitions. [2023-09-01 01:30:26,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 85 transitions, 655 flow [2023-09-01 01:30:26,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 85 transitions, 643 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 01:30:26,821 INFO L231 Difference]: Finished difference. Result has 91 places, 56 transitions, 364 flow [2023-09-01 01:30:26,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=364, PETRI_PLACES=91, PETRI_TRANSITIONS=56} [2023-09-01 01:30:26,822 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 36 predicate places. [2023-09-01 01:30:26,822 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 56 transitions, 364 flow [2023-09-01 01:30:26,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:26,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:26,822 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:26,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:27,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:27,032 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:27,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:27,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1622943098, now seen corresponding path program 3 times [2023-09-01 01:30:27,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:27,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442450302] [2023-09-01 01:30:27,033 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:30:27,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:27,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:27,034 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:27,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-09-01 01:30:27,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:30:27,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:27,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 01:30:27,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:27,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:27,256 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:27,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442450302] [2023-09-01 01:30:27,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442450302] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:27,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:27,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:30:27,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165000901] [2023-09-01 01:30:27,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:27,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:30:27,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:27,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:30:27,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:30:27,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 476 [2023-09-01 01:30:27,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 56 transitions, 364 flow. Second operand has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:27,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:27,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 476 [2023-09-01 01:30:27,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:28,321 INFO L130 PetriNetUnfolder]: 3653/6578 cut-off events. [2023-09-01 01:30:28,321 INFO L131 PetriNetUnfolder]: For 11798/11798 co-relation queries the response was YES. [2023-09-01 01:30:28,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19832 conditions, 6578 events. 3653/6578 cut-off events. For 11798/11798 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 40803 event pairs, 2359 based on Foata normal form. 46/6624 useless extension candidates. Maximal degree in co-relation 19799. Up to 4311 conditions per place. [2023-09-01 01:30:28,349 INFO L137 encePairwiseOnDemand]: 471/476 looper letters, 91 selfloop transitions, 7 changer transitions 3/102 dead transitions. [2023-09-01 01:30:28,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 102 transitions, 819 flow [2023-09-01 01:30:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 01:30:28,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 01:30:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2023-09-01 01:30:28,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45955882352941174 [2023-09-01 01:30:28,351 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2023-09-01 01:30:28,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2023-09-01 01:30:28,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:28,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2023-09-01 01:30:28,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:28,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:28,354 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 476.0) internal successors, (2380), 5 states have internal predecessors, (2380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:28,354 INFO L175 Difference]: Start difference. First operand has 91 places, 56 transitions, 364 flow. Second operand 4 states and 875 transitions. [2023-09-01 01:30:28,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 102 transitions, 819 flow [2023-09-01 01:30:28,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 815 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-09-01 01:30:28,370 INFO L231 Difference]: Finished difference. Result has 95 places, 57 transitions, 394 flow [2023-09-01 01:30:28,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=394, PETRI_PLACES=95, PETRI_TRANSITIONS=57} [2023-09-01 01:30:28,370 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 40 predicate places. [2023-09-01 01:30:28,370 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 57 transitions, 394 flow [2023-09-01 01:30:28,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 209.25) internal successors, (837), 4 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:28,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:28,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:28,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:28,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:28,571 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:28,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:28,571 INFO L85 PathProgramCache]: Analyzing trace with hash -37939586, now seen corresponding path program 1 times [2023-09-01 01:30:28,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:28,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902484686] [2023-09-01 01:30:28,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:30:28,572 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:28,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:28,573 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:28,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-09-01 01:30:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:30:28,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:30:28,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:29,137 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:30:29,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:30:29,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:30:29,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:30:29,209 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:29,210 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:29,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:29,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902484686] [2023-09-01 01:30:29,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902484686] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:29,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:29,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:29,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220727910] [2023-09-01 01:30:29,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:29,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:29,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:30,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:30,376 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 57 transitions, 394 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:30,376 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:30,376 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:30,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:32,020 INFO L130 PetriNetUnfolder]: 3992/7178 cut-off events. [2023-09-01 01:30:32,021 INFO L131 PetriNetUnfolder]: For 13836/13836 co-relation queries the response was YES. [2023-09-01 01:30:32,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21888 conditions, 7178 events. 3992/7178 cut-off events. For 13836/13836 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 45719 event pairs, 2357 based on Foata normal form. 5/7183 useless extension candidates. Maximal degree in co-relation 21853. Up to 4310 conditions per place. [2023-09-01 01:30:32,051 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 125 selfloop transitions, 14 changer transitions 10/150 dead transitions. [2023-09-01 01:30:32,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 150 transitions, 1179 flow [2023-09-01 01:30:32,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:32,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:32,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1729 transitions. [2023-09-01 01:30:32,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035947712418301 [2023-09-01 01:30:32,054 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1729 transitions. [2023-09-01 01:30:32,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1729 transitions. [2023-09-01 01:30:32,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:32,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1729 transitions. [2023-09-01 01:30:32,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.11111111111111) internal successors, (1729), 9 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:32,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:32,058 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:32,058 INFO L175 Difference]: Start difference. First operand has 95 places, 57 transitions, 394 flow. Second operand 9 states and 1729 transitions. [2023-09-01 01:30:32,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 150 transitions, 1179 flow [2023-09-01 01:30:32,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 1163 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 01:30:32,075 INFO L231 Difference]: Finished difference. Result has 105 places, 65 transitions, 474 flow [2023-09-01 01:30:32,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=474, PETRI_PLACES=105, PETRI_TRANSITIONS=65} [2023-09-01 01:30:32,076 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 50 predicate places. [2023-09-01 01:30:32,076 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 65 transitions, 474 flow [2023-09-01 01:30:32,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:32,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:32,077 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:32,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:32,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:32,281 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:32,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:32,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1165404606, now seen corresponding path program 2 times [2023-09-01 01:30:32,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:32,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726113337] [2023-09-01 01:30:32,281 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:30:32,282 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:32,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:32,282 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:32,283 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-09-01 01:30:32,472 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:30:32,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:32,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:30:32,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:32,700 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:30:32,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:30:32,710 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:30:32,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:30:33,019 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:30:33,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:30:33,116 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:33,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:33,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:33,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726113337] [2023-09-01 01:30:33,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726113337] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:33,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:33,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:33,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919174386] [2023-09-01 01:30:33,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:33,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:33,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:33,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:33,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:34,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:30:34,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 65 transitions, 474 flow. Second operand has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:34,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:34,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:30:34,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:36,015 INFO L130 PetriNetUnfolder]: 4002/7206 cut-off events. [2023-09-01 01:30:36,015 INFO L131 PetriNetUnfolder]: For 17894/17896 co-relation queries the response was YES. [2023-09-01 01:30:36,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25380 conditions, 7206 events. 4002/7206 cut-off events. For 17894/17896 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45557 event pairs, 2437 based on Foata normal form. 3/7209 useless extension candidates. Maximal degree in co-relation 25340. Up to 4310 conditions per place. [2023-09-01 01:30:36,053 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 97 selfloop transitions, 17 changer transitions 7/122 dead transitions. [2023-09-01 01:30:36,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 122 transitions, 1040 flow [2023-09-01 01:30:36,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:36,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:36,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1726 transitions. [2023-09-01 01:30:36,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40289449112978526 [2023-09-01 01:30:36,055 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1726 transitions. [2023-09-01 01:30:36,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1726 transitions. [2023-09-01 01:30:36,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:36,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1726 transitions. [2023-09-01 01:30:36,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.77777777777777) internal successors, (1726), 9 states have internal predecessors, (1726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:36,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:36,059 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:36,059 INFO L175 Difference]: Start difference. First operand has 105 places, 65 transitions, 474 flow. Second operand 9 states and 1726 transitions. [2023-09-01 01:30:36,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 122 transitions, 1040 flow [2023-09-01 01:30:36,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 122 transitions, 1017 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-09-01 01:30:36,105 INFO L231 Difference]: Finished difference. Result has 112 places, 71 transitions, 561 flow [2023-09-01 01:30:36,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=561, PETRI_PLACES=112, PETRI_TRANSITIONS=71} [2023-09-01 01:30:36,106 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 57 predicate places. [2023-09-01 01:30:36,106 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 71 transitions, 561 flow [2023-09-01 01:30:36,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:36,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:36,107 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:36,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:36,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:36,313 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:36,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:36,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1759256522, now seen corresponding path program 3 times [2023-09-01 01:30:36,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:36,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451249483] [2023-09-01 01:30:36,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:30:36,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:36,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:36,314 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:36,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-09-01 01:30:36,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:30:36,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:36,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:30:36,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:36,776 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:30:36,777 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:30:36,784 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:30:36,792 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:30:36,846 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:36,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:36,846 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:36,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451249483] [2023-09-01 01:30:36,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451249483] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:36,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:36,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:36,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577664444] [2023-09-01 01:30:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:36,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:36,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:38,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:38,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 71 transitions, 561 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:38,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:38,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:38,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:39,781 INFO L130 PetriNetUnfolder]: 4005/7221 cut-off events. [2023-09-01 01:30:39,782 INFO L131 PetriNetUnfolder]: For 20208/20210 co-relation queries the response was YES. [2023-09-01 01:30:39,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26208 conditions, 7221 events. 4005/7221 cut-off events. For 20208/20210 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45873 event pairs, 2361 based on Foata normal form. 9/7230 useless extension candidates. Maximal degree in co-relation 26166. Up to 4310 conditions per place. [2023-09-01 01:30:39,819 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 120 selfloop transitions, 18 changer transitions 5/144 dead transitions. [2023-09-01 01:30:39,820 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 144 transitions, 1253 flow [2023-09-01 01:30:39,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:39,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:39,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1728 transitions. [2023-09-01 01:30:39,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40336134453781514 [2023-09-01 01:30:39,822 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1728 transitions. [2023-09-01 01:30:39,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1728 transitions. [2023-09-01 01:30:39,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:39,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1728 transitions. [2023-09-01 01:30:39,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.0) internal successors, (1728), 9 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:39,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:39,826 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:39,826 INFO L175 Difference]: Start difference. First operand has 112 places, 71 transitions, 561 flow. Second operand 9 states and 1728 transitions. [2023-09-01 01:30:39,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 144 transitions, 1253 flow [2023-09-01 01:30:39,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 144 transitions, 1207 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-09-01 01:30:39,874 INFO L231 Difference]: Finished difference. Result has 116 places, 73 transitions, 596 flow [2023-09-01 01:30:39,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=116, PETRI_TRANSITIONS=73} [2023-09-01 01:30:39,874 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2023-09-01 01:30:39,874 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 73 transitions, 596 flow [2023-09-01 01:30:39,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:39,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:39,875 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:39,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:40,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:40,076 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:40,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:40,076 INFO L85 PathProgramCache]: Analyzing trace with hash -512503172, now seen corresponding path program 4 times [2023-09-01 01:30:40,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:40,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588919555] [2023-09-01 01:30:40,076 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:30:40,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:40,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:40,077 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:40,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-09-01 01:30:40,316 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:30:40,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:40,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:30:40,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:40,553 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:30:40,554 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:30:40,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:30:40,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:30:40,619 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:40,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:40,620 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:40,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588919555] [2023-09-01 01:30:40,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588919555] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:40,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:40,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:40,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252980719] [2023-09-01 01:30:40,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:40,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:40,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:40,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:40,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:41,727 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:41,728 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 73 transitions, 596 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:41,728 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:41,728 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:41,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:43,389 INFO L130 PetriNetUnfolder]: 4002/7212 cut-off events. [2023-09-01 01:30:43,389 INFO L131 PetriNetUnfolder]: For 24089/24091 co-relation queries the response was YES. [2023-09-01 01:30:43,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27725 conditions, 7212 events. 4002/7212 cut-off events. For 24089/24091 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45871 event pairs, 2409 based on Foata normal form. 3/7215 useless extension candidates. Maximal degree in co-relation 27681. Up to 4310 conditions per place. [2023-09-01 01:30:43,435 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 112 selfloop transitions, 16 changer transitions 13/142 dead transitions. [2023-09-01 01:30:43,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 142 transitions, 1286 flow [2023-09-01 01:30:43,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:43,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1724 transitions. [2023-09-01 01:30:43,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4024276377217554 [2023-09-01 01:30:43,439 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1724 transitions. [2023-09-01 01:30:43,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1724 transitions. [2023-09-01 01:30:43,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:43,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1724 transitions. [2023-09-01 01:30:43,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.55555555555554) internal successors, (1724), 9 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:43,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:43,444 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:43,444 INFO L175 Difference]: Start difference. First operand has 116 places, 73 transitions, 596 flow. Second operand 9 states and 1724 transitions. [2023-09-01 01:30:43,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 142 transitions, 1286 flow [2023-09-01 01:30:43,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 142 transitions, 1248 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-09-01 01:30:43,513 INFO L231 Difference]: Finished difference. Result has 120 places, 71 transitions, 577 flow [2023-09-01 01:30:43,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=562, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=577, PETRI_PLACES=120, PETRI_TRANSITIONS=71} [2023-09-01 01:30:43,514 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 65 predicate places. [2023-09-01 01:30:43,514 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 71 transitions, 577 flow [2023-09-01 01:30:43,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:43,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:43,514 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:43,523 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-09-01 01:30:43,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:43,717 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:43,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:43,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1796124574, now seen corresponding path program 5 times [2023-09-01 01:30:43,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:43,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402376087] [2023-09-01 01:30:43,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:30:43,718 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:43,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:43,719 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:43,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-09-01 01:30:44,068 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:30:44,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:44,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:30:44,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:44,370 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:30:44,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:30:44,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:30:44,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:30:44,424 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:44,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:44,425 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:44,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402376087] [2023-09-01 01:30:44,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402376087] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:44,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:44,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:44,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817644706] [2023-09-01 01:30:44,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:44,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:44,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:44,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:44,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:45,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:45,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 71 transitions, 577 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:45,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:45,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:45,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:47,297 INFO L130 PetriNetUnfolder]: 4003/7219 cut-off events. [2023-09-01 01:30:47,297 INFO L131 PetriNetUnfolder]: For 27281/27283 co-relation queries the response was YES. [2023-09-01 01:30:47,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29069 conditions, 7219 events. 4003/7219 cut-off events. For 27281/27283 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45805 event pairs, 2487 based on Foata normal form. 9/7228 useless extension candidates. Maximal degree in co-relation 29024. Up to 4310 conditions per place. [2023-09-01 01:30:47,340 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 103 selfloop transitions, 17 changer transitions 5/126 dead transitions. [2023-09-01 01:30:47,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 126 transitions, 1144 flow [2023-09-01 01:30:47,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:47,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1722 transitions. [2023-09-01 01:30:47,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019607843137255 [2023-09-01 01:30:47,343 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1722 transitions. [2023-09-01 01:30:47,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1722 transitions. [2023-09-01 01:30:47,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:47,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1722 transitions. [2023-09-01 01:30:47,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.33333333333334) internal successors, (1722), 9 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:47,348 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:47,349 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:47,349 INFO L175 Difference]: Start difference. First operand has 120 places, 71 transitions, 577 flow. Second operand 9 states and 1722 transitions. [2023-09-01 01:30:47,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 126 transitions, 1144 flow [2023-09-01 01:30:47,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 126 transitions, 1069 flow, removed 18 selfloop flow, removed 10 redundant places. [2023-09-01 01:30:47,409 INFO L231 Difference]: Finished difference. Result has 116 places, 72 transitions, 583 flow [2023-09-01 01:30:47,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=583, PETRI_PLACES=116, PETRI_TRANSITIONS=72} [2023-09-01 01:30:47,410 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 61 predicate places. [2023-09-01 01:30:47,410 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 72 transitions, 583 flow [2023-09-01 01:30:47,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:47,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:47,410 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:47,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:47,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:47,613 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:47,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:47,613 INFO L85 PathProgramCache]: Analyzing trace with hash -549371224, now seen corresponding path program 6 times [2023-09-01 01:30:47,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:47,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612430496] [2023-09-01 01:30:47,614 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:30:47,614 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:47,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:47,615 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:47,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-09-01 01:30:47,789 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:30:47,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:47,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:30:47,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:48,004 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:30:48,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:30:48,009 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:30:48,015 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:30:48,070 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:48,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:48,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:48,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612430496] [2023-09-01 01:30:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612430496] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:48,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294279829] [2023-09-01 01:30:48,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:48,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:48,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:48,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:49,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:49,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 72 transitions, 583 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:49,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:49,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:49,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:50,608 INFO L130 PetriNetUnfolder]: 4000/7210 cut-off events. [2023-09-01 01:30:50,608 INFO L131 PetriNetUnfolder]: For 24055/24057 co-relation queries the response was YES. [2023-09-01 01:30:50,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27846 conditions, 7210 events. 4000/7210 cut-off events. For 24055/24057 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45655 event pairs, 2439 based on Foata normal form. 3/7213 useless extension candidates. Maximal degree in co-relation 27802. Up to 4310 conditions per place. [2023-09-01 01:30:50,656 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 96 selfloop transitions, 15 changer transitions 12/124 dead transitions. [2023-09-01 01:30:50,656 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 124 transitions, 1130 flow [2023-09-01 01:30:50,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:50,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:50,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1718 transitions. [2023-09-01 01:30:50,659 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40102707749766575 [2023-09-01 01:30:50,659 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1718 transitions. [2023-09-01 01:30:50,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1718 transitions. [2023-09-01 01:30:50,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:50,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1718 transitions. [2023-09-01 01:30:50,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.88888888888889) internal successors, (1718), 9 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:50,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:50,664 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:50,664 INFO L175 Difference]: Start difference. First operand has 116 places, 72 transitions, 583 flow. Second operand 9 states and 1718 transitions. [2023-09-01 01:30:50,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 124 transitions, 1130 flow [2023-09-01 01:30:50,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 124 transitions, 1083 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-09-01 01:30:50,728 INFO L231 Difference]: Finished difference. Result has 118 places, 70 transitions, 555 flow [2023-09-01 01:30:50,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=555, PETRI_PLACES=118, PETRI_TRANSITIONS=70} [2023-09-01 01:30:50,728 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 63 predicate places. [2023-09-01 01:30:50,729 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 70 transitions, 555 flow [2023-09-01 01:30:50,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:50,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:50,729 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:50,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:50,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:50,930 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:50,931 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:50,931 INFO L85 PathProgramCache]: Analyzing trace with hash 445513020, now seen corresponding path program 7 times [2023-09-01 01:30:50,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:50,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056990415] [2023-09-01 01:30:50,931 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:30:50,931 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:50,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:50,932 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:50,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-09-01 01:30:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:30:51,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:30:51,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:51,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:30:51,293 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:30:51,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:30:51,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:30:51,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:30:51,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:30:51,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:30:51,321 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:30:51,792 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:30:51,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:30:51,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:51,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:51,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:51,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056990415] [2023-09-01 01:30:51,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056990415] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:51,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:51,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:51,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228999427] [2023-09-01 01:30:51,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:51,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:51,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:51,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:51,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:53,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:53,556 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 70 transitions, 555 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:53,556 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:53,556 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:53,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:55,373 INFO L130 PetriNetUnfolder]: 4000/7200 cut-off events. [2023-09-01 01:30:55,373 INFO L131 PetriNetUnfolder]: For 26402/26404 co-relation queries the response was YES. [2023-09-01 01:30:55,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28850 conditions, 7200 events. 4000/7200 cut-off events. For 26402/26404 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 45557 event pairs, 2450 based on Foata normal form. 1/7201 useless extension candidates. Maximal degree in co-relation 28806. Up to 4310 conditions per place. [2023-09-01 01:30:55,415 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 108 selfloop transitions, 16 changer transitions 7/132 dead transitions. [2023-09-01 01:30:55,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 132 transitions, 1213 flow [2023-09-01 01:30:55,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:55,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:55,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1723 transitions. [2023-09-01 01:30:55,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40219421101774044 [2023-09-01 01:30:55,419 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1723 transitions. [2023-09-01 01:30:55,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1723 transitions. [2023-09-01 01:30:55,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:55,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1723 transitions. [2023-09-01 01:30:55,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.44444444444446) internal successors, (1723), 9 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:55,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:55,424 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:55,424 INFO L175 Difference]: Start difference. First operand has 118 places, 70 transitions, 555 flow. Second operand 9 states and 1723 transitions. [2023-09-01 01:30:55,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 132 transitions, 1213 flow [2023-09-01 01:30:55,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 132 transitions, 1139 flow, removed 12 selfloop flow, removed 8 redundant places. [2023-09-01 01:30:55,487 INFO L231 Difference]: Finished difference. Result has 119 places, 77 transitions, 660 flow [2023-09-01 01:30:55,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=517, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=660, PETRI_PLACES=119, PETRI_TRANSITIONS=77} [2023-09-01 01:30:55,488 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 64 predicate places. [2023-09-01 01:30:55,488 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 77 transitions, 660 flow [2023-09-01 01:30:55,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:55,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:55,489 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:55,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:55,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:55,693 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:55,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:55,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1579365720, now seen corresponding path program 8 times [2023-09-01 01:30:55,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:55,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1604384855] [2023-09-01 01:30:55,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:30:55,694 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:55,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:55,695 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:55,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-09-01 01:30:55,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:30:55,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:55,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:30:55,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:56,147 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:30:56,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:30:56,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:30:56,158 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:30:56,187 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:30:56,187 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:30:56,187 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:30:56,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1604384855] [2023-09-01 01:30:56,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1604384855] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:30:56,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:30:56,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:30:56,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949817044] [2023-09-01 01:30:56,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:30:56,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:30:56,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:30:56,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:30:56,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:30:57,385 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:30:57,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 77 transitions, 660 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:57,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:30:57,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:30:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:30:58,949 INFO L130 PetriNetUnfolder]: 3991/7199 cut-off events. [2023-09-01 01:30:58,949 INFO L131 PetriNetUnfolder]: For 25060/25062 co-relation queries the response was YES. [2023-09-01 01:30:58,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27867 conditions, 7199 events. 3991/7199 cut-off events. For 25060/25062 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45592 event pairs, 2456 based on Foata normal form. 7/7206 useless extension candidates. Maximal degree in co-relation 27820. Up to 4310 conditions per place. [2023-09-01 01:30:59,000 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 104 selfloop transitions, 19 changer transitions 5/129 dead transitions. [2023-09-01 01:30:59,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 129 transitions, 1201 flow [2023-09-01 01:30:59,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:30:59,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:30:59,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1725 transitions. [2023-09-01 01:30:59,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026610644257703 [2023-09-01 01:30:59,003 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1725 transitions. [2023-09-01 01:30:59,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1725 transitions. [2023-09-01 01:30:59,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:30:59,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1725 transitions. [2023-09-01 01:30:59,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.66666666666666) internal successors, (1725), 9 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:59,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:59,008 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:59,008 INFO L175 Difference]: Start difference. First operand has 119 places, 77 transitions, 660 flow. Second operand 9 states and 1725 transitions. [2023-09-01 01:30:59,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 129 transitions, 1201 flow [2023-09-01 01:30:59,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 129 transitions, 1161 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-09-01 01:30:59,078 INFO L231 Difference]: Finished difference. Result has 126 places, 82 transitions, 759 flow [2023-09-01 01:30:59,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=634, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=759, PETRI_PLACES=126, PETRI_TRANSITIONS=82} [2023-09-01 01:30:59,078 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 71 predicate places. [2023-09-01 01:30:59,078 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 82 transitions, 759 flow [2023-09-01 01:30:59,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:30:59,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:30:59,079 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:30:59,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-09-01 01:30:59,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:59,279 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:30:59,280 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:30:59,280 INFO L85 PathProgramCache]: Analyzing trace with hash 475039614, now seen corresponding path program 9 times [2023-09-01 01:30:59,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:30:59,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005310109] [2023-09-01 01:30:59,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:30:59,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:30:59,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:30:59,281 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:30:59,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-09-01 01:30:59,471 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:30:59,471 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:30:59,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:30:59,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:30:59,657 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:30:59,658 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:30:59,665 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:30:59,665 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:30:59,990 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:30:59,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:31:00,066 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:00,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:00,067 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:00,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005310109] [2023-09-01 01:31:00,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005310109] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:00,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:00,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:00,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565721016] [2023-09-01 01:31:00,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:00,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:00,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:00,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:00,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:01,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:31:01,167 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 82 transitions, 759 flow. Second operand has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:01,167 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:01,167 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:31:01,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:02,736 INFO L130 PetriNetUnfolder]: 3988/7196 cut-off events. [2023-09-01 01:31:02,736 INFO L131 PetriNetUnfolder]: For 24823/24825 co-relation queries the response was YES. [2023-09-01 01:31:02,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26956 conditions, 7196 events. 3988/7196 cut-off events. For 24823/24825 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45663 event pairs, 2542 based on Foata normal form. 1/7197 useless extension candidates. Maximal degree in co-relation 26906. Up to 4310 conditions per place. [2023-09-01 01:31:02,777 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 99 selfloop transitions, 20 changer transitions 7/127 dead transitions. [2023-09-01 01:31:02,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 127 transitions, 1253 flow [2023-09-01 01:31:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:02,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:02,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1729 transitions. [2023-09-01 01:31:02,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035947712418301 [2023-09-01 01:31:02,780 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1729 transitions. [2023-09-01 01:31:02,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1729 transitions. [2023-09-01 01:31:02,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:02,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1729 transitions. [2023-09-01 01:31:02,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.11111111111111) internal successors, (1729), 9 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:02,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:02,785 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:02,785 INFO L175 Difference]: Start difference. First operand has 126 places, 82 transitions, 759 flow. Second operand 9 states and 1729 transitions. [2023-09-01 01:31:02,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 127 transitions, 1253 flow [2023-09-01 01:31:02,851 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 127 transitions, 1213 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-09-01 01:31:02,853 INFO L231 Difference]: Finished difference. Result has 132 places, 84 transitions, 801 flow [2023-09-01 01:31:02,853 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=801, PETRI_PLACES=132, PETRI_TRANSITIONS=84} [2023-09-01 01:31:02,853 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 77 predicate places. [2023-09-01 01:31:02,853 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 84 transitions, 801 flow [2023-09-01 01:31:02,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:02,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:02,854 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:02,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-09-01 01:31:03,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:03,055 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:03,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:03,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1239736216, now seen corresponding path program 10 times [2023-09-01 01:31:03,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:03,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745765309] [2023-09-01 01:31:03,055 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:31:03,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:03,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:03,056 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:03,057 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-09-01 01:31:03,313 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:31:03,314 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:03,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:31:03,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:03,542 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:03,542 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:03,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:03,552 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:03,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:03,607 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:03,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745765309] [2023-09-01 01:31:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745765309] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:03,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:03,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:03,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157540606] [2023-09-01 01:31:03,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:03,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:03,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:04,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:31:04,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 84 transitions, 801 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:04,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:04,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:31:04,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:05,996 INFO L130 PetriNetUnfolder]: 3986/7186 cut-off events. [2023-09-01 01:31:05,996 INFO L131 PetriNetUnfolder]: For 23955/23957 co-relation queries the response was YES. [2023-09-01 01:31:06,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26773 conditions, 7186 events. 3986/7186 cut-off events. For 23955/23957 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45539 event pairs, 2544 based on Foata normal form. 1/7187 useless extension candidates. Maximal degree in co-relation 26721. Up to 4310 conditions per place. [2023-09-01 01:31:06,047 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 97 selfloop transitions, 18 changer transitions 12/128 dead transitions. [2023-09-01 01:31:06,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 128 transitions, 1269 flow [2023-09-01 01:31:06,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:06,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:06,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1721 transitions. [2023-09-01 01:31:06,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40172735760971057 [2023-09-01 01:31:06,050 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1721 transitions. [2023-09-01 01:31:06,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1721 transitions. [2023-09-01 01:31:06,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:06,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1721 transitions. [2023-09-01 01:31:06,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.22222222222223) internal successors, (1721), 9 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:06,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:06,053 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:06,053 INFO L175 Difference]: Start difference. First operand has 132 places, 84 transitions, 801 flow. Second operand 9 states and 1721 transitions. [2023-09-01 01:31:06,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 128 transitions, 1269 flow [2023-09-01 01:31:06,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 128 transitions, 1213 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-09-01 01:31:06,113 INFO L231 Difference]: Finished difference. Result has 133 places, 82 transitions, 763 flow [2023-09-01 01:31:06,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=133, PETRI_TRANSITIONS=82} [2023-09-01 01:31:06,113 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 78 predicate places. [2023-09-01 01:31:06,113 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 82 transitions, 763 flow [2023-09-01 01:31:06,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:06,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:06,114 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:06,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2023-09-01 01:31:06,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:06,315 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:06,315 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:06,315 INFO L85 PathProgramCache]: Analyzing trace with hash -195766018, now seen corresponding path program 11 times [2023-09-01 01:31:06,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:06,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1548831588] [2023-09-01 01:31:06,315 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:31:06,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:06,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:06,316 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:06,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-09-01 01:31:06,622 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:31:06,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:06,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:31:06,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:06,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:06,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:31:06,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:06,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:31:06,813 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:06,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:31:06,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:06,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:31:07,354 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:31:07,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:31:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:07,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:07,428 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:07,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1548831588] [2023-09-01 01:31:07,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1548831588] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:07,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:07,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836928255] [2023-09-01 01:31:07,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:09,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:31:10,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:31:10,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 82 transitions, 763 flow. Second operand has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:10,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:10,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:31:10,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:12,023 INFO L130 PetriNetUnfolder]: 3989/7141 cut-off events. [2023-09-01 01:31:12,024 INFO L131 PetriNetUnfolder]: For 24862/24864 co-relation queries the response was YES. [2023-09-01 01:31:12,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26756 conditions, 7141 events. 3989/7141 cut-off events. For 24862/24864 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 45201 event pairs, 2950 based on Foata normal form. 1/7142 useless extension candidates. Maximal degree in co-relation 26704. Up to 6446 conditions per place. [2023-09-01 01:31:12,080 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 120 selfloop transitions, 19 changer transitions 7/147 dead transitions. [2023-09-01 01:31:12,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 147 transitions, 1524 flow [2023-09-01 01:31:12,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:31:12,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:31:12,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1914 transitions. [2023-09-01 01:31:12,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40210084033613447 [2023-09-01 01:31:12,083 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1914 transitions. [2023-09-01 01:31:12,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1914 transitions. [2023-09-01 01:31:12,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:12,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1914 transitions. [2023-09-01 01:31:12,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 191.4) internal successors, (1914), 10 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:12,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:12,088 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:12,088 INFO L175 Difference]: Start difference. First operand has 133 places, 82 transitions, 763 flow. Second operand 10 states and 1914 transitions. [2023-09-01 01:31:12,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 147 transitions, 1524 flow [2023-09-01 01:31:12,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 147 transitions, 1458 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-09-01 01:31:12,243 INFO L231 Difference]: Finished difference. Result has 134 places, 87 transitions, 858 flow [2023-09-01 01:31:12,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=858, PETRI_PLACES=134, PETRI_TRANSITIONS=87} [2023-09-01 01:31:12,244 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 79 predicate places. [2023-09-01 01:31:12,244 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 87 transitions, 858 flow [2023-09-01 01:31:12,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:12,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:12,244 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:12,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-09-01 01:31:12,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:12,449 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:12,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:12,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1642516196, now seen corresponding path program 12 times [2023-09-01 01:31:12,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:12,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333965889] [2023-09-01 01:31:12,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:31:12,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:12,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:12,450 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:12,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-09-01 01:31:12,634 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:31:12,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:12,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:31:12,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:12,918 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:12,918 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:12,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:12,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:12,963 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:12,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:12,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:12,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333965889] [2023-09-01 01:31:12,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [333965889] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:12,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:12,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:12,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840999221] [2023-09-01 01:31:12,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:12,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:12,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:12,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:12,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:13,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:31:13,979 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 87 transitions, 858 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:13,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:13,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:31:13,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:15,467 INFO L130 PetriNetUnfolder]: 3980/7132 cut-off events. [2023-09-01 01:31:15,467 INFO L131 PetriNetUnfolder]: For 28294/28296 co-relation queries the response was YES. [2023-09-01 01:31:15,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28361 conditions, 7132 events. 3980/7132 cut-off events. For 28294/28296 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 45106 event pairs, 2924 based on Foata normal form. 7/7139 useless extension candidates. Maximal degree in co-relation 28307. Up to 6441 conditions per place. [2023-09-01 01:31:15,512 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 107 selfloop transitions, 22 changer transitions 5/135 dead transitions. [2023-09-01 01:31:15,512 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 135 transitions, 1426 flow [2023-09-01 01:31:15,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:15,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:15,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1721 transitions. [2023-09-01 01:31:15,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40172735760971057 [2023-09-01 01:31:15,515 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1721 transitions. [2023-09-01 01:31:15,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1721 transitions. [2023-09-01 01:31:15,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:15,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1721 transitions. [2023-09-01 01:31:15,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.22222222222223) internal successors, (1721), 9 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:15,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:15,520 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:15,520 INFO L175 Difference]: Start difference. First operand has 134 places, 87 transitions, 858 flow. Second operand 9 states and 1721 transitions. [2023-09-01 01:31:15,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 135 transitions, 1426 flow [2023-09-01 01:31:15,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 135 transitions, 1370 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-09-01 01:31:15,575 INFO L231 Difference]: Finished difference. Result has 141 places, 95 transitions, 1016 flow [2023-09-01 01:31:15,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1016, PETRI_PLACES=141, PETRI_TRANSITIONS=95} [2023-09-01 01:31:15,575 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 86 predicate places. [2023-09-01 01:31:15,575 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 95 transitions, 1016 flow [2023-09-01 01:31:15,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:15,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:15,576 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:15,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2023-09-01 01:31:15,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:15,777 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:15,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:15,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1518598400, now seen corresponding path program 13 times [2023-09-01 01:31:15,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:15,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788408752] [2023-09-01 01:31:15,778 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:31:15,778 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:15,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:15,779 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:15,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-09-01 01:31:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:31:16,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:31:16,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:16,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:16,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:31:16,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:16,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:31:16,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:16,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:31:16,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:16,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:31:16,447 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:31:16,447 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:31:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:16,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:16,525 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:16,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788408752] [2023-09-01 01:31:16,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788408752] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:16,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:16,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:16,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067943558] [2023-09-01 01:31:16,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:16,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:16,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:16,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:16,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:17,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:31:17,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 95 transitions, 1016 flow. Second operand has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:17,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:17,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:31:17,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:19,780 INFO L130 PetriNetUnfolder]: 3981/7145 cut-off events. [2023-09-01 01:31:19,780 INFO L131 PetriNetUnfolder]: For 29539/29541 co-relation queries the response was YES. [2023-09-01 01:31:19,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27660 conditions, 7145 events. 3981/7145 cut-off events. For 29539/29541 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45413 event pairs, 2998 based on Foata normal form. 1/7146 useless extension candidates. Maximal degree in co-relation 27602. Up to 6441 conditions per place. [2023-09-01 01:31:19,832 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 114 selfloop transitions, 20 changer transitions 8/143 dead transitions. [2023-09-01 01:31:19,832 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 143 transitions, 1603 flow [2023-09-01 01:31:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:19,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1733 transitions. [2023-09-01 01:31:19,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40452847805788983 [2023-09-01 01:31:19,835 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1733 transitions. [2023-09-01 01:31:19,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1733 transitions. [2023-09-01 01:31:19,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:19,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1733 transitions. [2023-09-01 01:31:19,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 192.55555555555554) internal successors, (1733), 9 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:19,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:19,840 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:19,840 INFO L175 Difference]: Start difference. First operand has 141 places, 95 transitions, 1016 flow. Second operand 9 states and 1733 transitions. [2023-09-01 01:31:19,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 143 transitions, 1603 flow [2023-09-01 01:31:19,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 143 transitions, 1548 flow, removed 21 selfloop flow, removed 4 redundant places. [2023-09-01 01:31:19,926 INFO L231 Difference]: Finished difference. Result has 149 places, 99 transitions, 1105 flow [2023-09-01 01:31:19,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=979, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1105, PETRI_PLACES=149, PETRI_TRANSITIONS=99} [2023-09-01 01:31:19,927 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 94 predicate places. [2023-09-01 01:31:19,927 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 99 transitions, 1105 flow [2023-09-01 01:31:19,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:19,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:19,928 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:19,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-09-01 01:31:20,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:20,137 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:20,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:20,137 INFO L85 PathProgramCache]: Analyzing trace with hash -166650836, now seen corresponding path program 14 times [2023-09-01 01:31:20,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:20,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539372887] [2023-09-01 01:31:20,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:31:20,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:20,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:20,139 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:20,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-09-01 01:31:20,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:31:20,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:20,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:31:20,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:20,561 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:20,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:20,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:20,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:20,629 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:20,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:20,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:20,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539372887] [2023-09-01 01:31:20,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [539372887] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:20,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:20,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:20,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924792882] [2023-09-01 01:31:20,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:20,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:20,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:20,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:20,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:21,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 476 [2023-09-01 01:31:21,585 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 99 transitions, 1105 flow. Second operand has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:21,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:21,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 476 [2023-09-01 01:31:21,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:23,165 INFO L130 PetriNetUnfolder]: 3979/7143 cut-off events. [2023-09-01 01:31:23,165 INFO L131 PetriNetUnfolder]: For 28085/28087 co-relation queries the response was YES. [2023-09-01 01:31:23,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27519 conditions, 7143 events. 3979/7143 cut-off events. For 28085/28087 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 45370 event pairs, 3048 based on Foata normal form. 1/7144 useless extension candidates. Maximal degree in co-relation 27458. Up to 6441 conditions per place. [2023-09-01 01:31:23,204 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 106 selfloop transitions, 24 changer transitions 7/138 dead transitions. [2023-09-01 01:31:23,205 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 138 transitions, 1569 flow [2023-09-01 01:31:23,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:23,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:23,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1719 transitions. [2023-09-01 01:31:23,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4012605042016807 [2023-09-01 01:31:23,207 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1719 transitions. [2023-09-01 01:31:23,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1719 transitions. [2023-09-01 01:31:23,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:23,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1719 transitions. [2023-09-01 01:31:23,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.0) internal successors, (1719), 9 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:23,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:23,211 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:23,211 INFO L175 Difference]: Start difference. First operand has 149 places, 99 transitions, 1105 flow. Second operand 9 states and 1719 transitions. [2023-09-01 01:31:23,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 138 transitions, 1569 flow [2023-09-01 01:31:23,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 138 transitions, 1514 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-09-01 01:31:23,260 INFO L231 Difference]: Finished difference. Result has 153 places, 99 transitions, 1117 flow [2023-09-01 01:31:23,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1062, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1117, PETRI_PLACES=153, PETRI_TRANSITIONS=99} [2023-09-01 01:31:23,261 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 98 predicate places. [2023-09-01 01:31:23,261 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 99 transitions, 1117 flow [2023-09-01 01:31:23,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 184.72727272727272) internal successors, (2032), 11 states have internal predecessors, (2032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:23,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:23,261 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:23,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2023-09-01 01:31:23,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:23,462 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:23,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:23,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1548124994, now seen corresponding path program 15 times [2023-09-01 01:31:23,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:23,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501162805] [2023-09-01 01:31:23,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:31:23,463 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:23,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:23,468 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:23,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-09-01 01:31:23,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:31:23,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:23,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:31:23,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:23,851 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:31:23,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:31:23,859 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:31:23,859 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:31:24,114 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:31:24,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:31:24,186 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:24,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:24,186 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:24,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501162805] [2023-09-01 01:31:24,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501162805] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:24,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:24,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:31:24,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849845530] [2023-09-01 01:31:24,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:24,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:31:24,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:24,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:31:24,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:31:25,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:31:25,193 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 99 transitions, 1117 flow. Second operand has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:25,193 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:25,193 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:31:25,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:26,839 INFO L130 PetriNetUnfolder]: 3977/7127 cut-off events. [2023-09-01 01:31:26,839 INFO L131 PetriNetUnfolder]: For 28272/28274 co-relation queries the response was YES. [2023-09-01 01:31:26,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27475 conditions, 7127 events. 3977/7127 cut-off events. For 28272/28274 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 45116 event pairs, 2966 based on Foata normal form. 1/7128 useless extension candidates. Maximal degree in co-relation 27413. Up to 6441 conditions per place. [2023-09-01 01:31:26,888 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 101 selfloop transitions, 25 changer transitions 9/136 dead transitions. [2023-09-01 01:31:26,888 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 136 transitions, 1595 flow [2023-09-01 01:31:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:26,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1725 transitions. [2023-09-01 01:31:26,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4026610644257703 [2023-09-01 01:31:26,895 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1725 transitions. [2023-09-01 01:31:26,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1725 transitions. [2023-09-01 01:31:26,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:26,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1725 transitions. [2023-09-01 01:31:26,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 191.66666666666666) internal successors, (1725), 9 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:26,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:26,899 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:26,899 INFO L175 Difference]: Start difference. First operand has 153 places, 99 transitions, 1117 flow. Second operand 9 states and 1725 transitions. [2023-09-01 01:31:26,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 136 transitions, 1595 flow [2023-09-01 01:31:26,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 136 transitions, 1535 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-09-01 01:31:26,953 INFO L231 Difference]: Finished difference. Result has 154 places, 99 transitions, 1126 flow [2023-09-01 01:31:26,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1066, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1126, PETRI_PLACES=154, PETRI_TRANSITIONS=99} [2023-09-01 01:31:26,954 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2023-09-01 01:31:26,954 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 99 transitions, 1126 flow [2023-09-01 01:31:26,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.72727272727272) internal successors, (2043), 11 states have internal predecessors, (2043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:26,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:26,954 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:26,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2023-09-01 01:31:27,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:27,155 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:27,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash 38585410, now seen corresponding path program 16 times [2023-09-01 01:31:27,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:27,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382604058] [2023-09-01 01:31:27,156 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:31:27,156 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:27,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:27,157 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:27,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-09-01 01:31:27,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:31:27,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:27,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 01:31:27,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:27,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-09-01 01:31:27,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:31:27,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:31:27,896 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:27,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:27,901 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:27,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:27,946 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:27,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:27,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:27,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382604058] [2023-09-01 01:31:27,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382604058] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:27,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:27,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:31:27,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383001857] [2023-09-01 01:31:27,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:27,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:31:27,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:27,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:31:27,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:31:29,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:31:29,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 99 transitions, 1126 flow. Second operand has 12 states, 12 states have (on average 182.58333333333334) internal successors, (2191), 12 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:29,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:29,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:31:29,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:31,824 INFO L130 PetriNetUnfolder]: 4120/7490 cut-off events. [2023-09-01 01:31:31,824 INFO L131 PetriNetUnfolder]: For 29375/29377 co-relation queries the response was YES. [2023-09-01 01:31:31,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28575 conditions, 7490 events. 4120/7490 cut-off events. For 29375/29377 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 48728 event pairs, 2414 based on Foata normal form. 5/7495 useless extension candidates. Maximal degree in co-relation 28513. Up to 4306 conditions per place. [2023-09-01 01:31:31,879 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 136 selfloop transitions, 38 changer transitions 10/185 dead transitions. [2023-09-01 01:31:31,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 185 transitions, 2092 flow [2023-09-01 01:31:31,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:31:31,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:31:31,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1889 transitions. [2023-09-01 01:31:31,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968487394957983 [2023-09-01 01:31:31,882 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1889 transitions. [2023-09-01 01:31:31,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1889 transitions. [2023-09-01 01:31:31,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:31,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1889 transitions. [2023-09-01 01:31:31,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 188.9) internal successors, (1889), 10 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:31,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:31,886 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:31,886 INFO L175 Difference]: Start difference. First operand has 154 places, 99 transitions, 1126 flow. Second operand 10 states and 1889 transitions. [2023-09-01 01:31:31,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 185 transitions, 2092 flow [2023-09-01 01:31:31,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 185 transitions, 2010 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-09-01 01:31:31,960 INFO L231 Difference]: Finished difference. Result has 154 places, 102 transitions, 1195 flow [2023-09-01 01:31:31,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1060, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1195, PETRI_PLACES=154, PETRI_TRANSITIONS=102} [2023-09-01 01:31:31,960 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 99 predicate places. [2023-09-01 01:31:31,960 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 102 transitions, 1195 flow [2023-09-01 01:31:31,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 182.58333333333334) internal successors, (2191), 12 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:31,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:31,961 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:31,970 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-09-01 01:31:32,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:32,161 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:32,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:32,162 INFO L85 PathProgramCache]: Analyzing trace with hash 200681468, now seen corresponding path program 17 times [2023-09-01 01:31:32,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:32,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255498566] [2023-09-01 01:31:32,162 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:31:32,162 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:32,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:32,163 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:32,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-09-01 01:31:32,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:31:32,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:32,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 01:31:32,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:32,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:31:32,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:32,983 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:31:32,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-09-01 01:31:33,830 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:33,830 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:33,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:33,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:33,919 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:33,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:33,920 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:33,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255498566] [2023-09-01 01:31:33,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255498566] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:33,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:33,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:31:33,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597487989] [2023-09-01 01:31:33,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:33,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:31:33,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:31:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:31:38,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 476 [2023-09-01 01:31:38,464 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 102 transitions, 1195 flow. Second operand has 12 states, 12 states have (on average 181.58333333333334) internal successors, (2179), 12 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:38,465 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:38,465 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 476 [2023-09-01 01:31:38,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:42,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:31:45,541 INFO L130 PetriNetUnfolder]: 4188/7635 cut-off events. [2023-09-01 01:31:45,541 INFO L131 PetriNetUnfolder]: For 36696/36698 co-relation queries the response was YES. [2023-09-01 01:31:45,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30660 conditions, 7635 events. 4188/7635 cut-off events. For 36696/36698 co-relation queries the response was YES. Maximal size of possible extension queue 201. Compared 50228 event pairs, 2492 based on Foata normal form. 5/7640 useless extension candidates. Maximal degree in co-relation 30597. Up to 4312 conditions per place. [2023-09-01 01:31:45,586 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 142 selfloop transitions, 37 changer transitions 10/190 dead transitions. [2023-09-01 01:31:45,587 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 190 transitions, 2183 flow [2023-09-01 01:31:45,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:31:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:31:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1703 transitions. [2023-09-01 01:31:45,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975256769374416 [2023-09-01 01:31:45,590 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1703 transitions. [2023-09-01 01:31:45,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1703 transitions. [2023-09-01 01:31:45,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:45,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1703 transitions. [2023-09-01 01:31:45,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 189.22222222222223) internal successors, (1703), 9 states have internal predecessors, (1703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:45,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:45,594 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:45,594 INFO L175 Difference]: Start difference. First operand has 154 places, 102 transitions, 1195 flow. Second operand 9 states and 1703 transitions. [2023-09-01 01:31:45,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 190 transitions, 2183 flow [2023-09-01 01:31:45,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 190 transitions, 2129 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-09-01 01:31:45,667 INFO L231 Difference]: Finished difference. Result has 158 places, 103 transitions, 1263 flow [2023-09-01 01:31:45,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1263, PETRI_PLACES=158, PETRI_TRANSITIONS=103} [2023-09-01 01:31:45,667 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2023-09-01 01:31:45,667 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 103 transitions, 1263 flow [2023-09-01 01:31:45,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.58333333333334) internal successors, (2179), 12 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:45,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:45,668 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:45,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-09-01 01:31:45,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:45,869 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:45,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:45,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1007604634, now seen corresponding path program 18 times [2023-09-01 01:31:45,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:45,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [214170202] [2023-09-01 01:31:45,870 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:31:45,870 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:45,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:45,871 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:45,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-09-01 01:31:46,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:31:46,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:31:46,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 01:31:46,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:46,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:31:46,264 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:31:46,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:46,561 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:31:46,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-09-01 01:31:47,860 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:47,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:47,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:47,890 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:47,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:47,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:47,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [214170202] [2023-09-01 01:31:47,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [214170202] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:47,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:47,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:31:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183521844] [2023-09-01 01:31:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:31:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:31:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:31:53,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 476 [2023-09-01 01:31:53,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 103 transitions, 1263 flow. Second operand has 12 states, 12 states have (on average 179.58333333333334) internal successors, (2155), 12 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:53,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:31:53,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 476 [2023-09-01 01:31:53,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:31:57,042 INFO L130 PetriNetUnfolder]: 4115/7490 cut-off events. [2023-09-01 01:31:57,042 INFO L131 PetriNetUnfolder]: For 36741/36743 co-relation queries the response was YES. [2023-09-01 01:31:57,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30408 conditions, 7490 events. 4115/7490 cut-off events. For 36741/36743 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 48924 event pairs, 2297 based on Foata normal form. 5/7495 useless extension candidates. Maximal degree in co-relation 30343. Up to 4306 conditions per place. [2023-09-01 01:31:57,099 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 137 selfloop transitions, 37 changer transitions 11/186 dead transitions. [2023-09-01 01:31:57,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 186 transitions, 2231 flow [2023-09-01 01:31:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:31:57,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:31:57,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1859 transitions. [2023-09-01 01:31:57,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39054621848739496 [2023-09-01 01:31:57,103 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1859 transitions. [2023-09-01 01:31:57,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1859 transitions. [2023-09-01 01:31:57,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:31:57,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1859 transitions. [2023-09-01 01:31:57,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.9) internal successors, (1859), 10 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:57,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:57,108 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:57,108 INFO L175 Difference]: Start difference. First operand has 158 places, 103 transitions, 1263 flow. Second operand 10 states and 1859 transitions. [2023-09-01 01:31:57,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 186 transitions, 2231 flow [2023-09-01 01:31:57,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 186 transitions, 2114 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-09-01 01:31:57,236 INFO L231 Difference]: Finished difference. Result has 160 places, 102 transitions, 1248 flow [2023-09-01 01:31:57,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1248, PETRI_PLACES=160, PETRI_TRANSITIONS=102} [2023-09-01 01:31:57,237 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 105 predicate places. [2023-09-01 01:31:57,237 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 102 transitions, 1248 flow [2023-09-01 01:31:57,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 179.58333333333334) internal successors, (2155), 12 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:31:57,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:31:57,238 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:31:57,248 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-09-01 01:31:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:57,448 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:31:57,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:31:57,448 INFO L85 PathProgramCache]: Analyzing trace with hash -273882118, now seen corresponding path program 19 times [2023-09-01 01:31:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:31:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1616812916] [2023-09-01 01:31:57,449 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:31:57,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:31:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:31:57,450 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:31:57,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-09-01 01:31:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:31:57,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 01:31:57,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:31:57,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:31:57,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:31:58,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:31:58,184 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:31:58,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-09-01 01:31:58,806 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:31:58,806 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:31:58,815 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:31:58,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:31:58,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:31:58,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:31:58,892 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:31:58,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1616812916] [2023-09-01 01:31:58,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1616812916] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:31:58,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:31:58,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:31:58,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865828964] [2023-09-01 01:31:58,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:31:58,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:31:58,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:31:58,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:31:58,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:32:02,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 476 [2023-09-01 01:32:02,798 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 102 transitions, 1248 flow. Second operand has 12 states, 12 states have (on average 181.58333333333334) internal successors, (2179), 12 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:02,798 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:02,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 476 [2023-09-01 01:32:02,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:06,616 INFO L130 PetriNetUnfolder]: 3981/7200 cut-off events. [2023-09-01 01:32:06,616 INFO L131 PetriNetUnfolder]: For 37057/37059 co-relation queries the response was YES. [2023-09-01 01:32:06,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29005 conditions, 7200 events. 3981/7200 cut-off events. For 37057/37059 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45971 event pairs, 2360 based on Foata normal form. 9/7209 useless extension candidates. Maximal degree in co-relation 28940. Up to 4312 conditions per place. [2023-09-01 01:32:06,677 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 134 selfloop transitions, 35 changer transitions 7/177 dead transitions. [2023-09-01 01:32:06,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 177 transitions, 2107 flow [2023-09-01 01:32:06,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:32:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:32:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1699 transitions. [2023-09-01 01:32:06,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39659197012138186 [2023-09-01 01:32:06,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1699 transitions. [2023-09-01 01:32:06,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1699 transitions. [2023-09-01 01:32:06,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:06,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1699 transitions. [2023-09-01 01:32:06,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.77777777777777) internal successors, (1699), 9 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:06,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:06,684 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:06,684 INFO L175 Difference]: Start difference. First operand has 160 places, 102 transitions, 1248 flow. Second operand 9 states and 1699 transitions. [2023-09-01 01:32:06,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 177 transitions, 2107 flow [2023-09-01 01:32:06,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 177 transitions, 1997 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-09-01 01:32:06,774 INFO L231 Difference]: Finished difference. Result has 161 places, 104 transitions, 1290 flow [2023-09-01 01:32:06,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1290, PETRI_PLACES=161, PETRI_TRANSITIONS=104} [2023-09-01 01:32:06,774 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2023-09-01 01:32:06,775 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 104 transitions, 1290 flow [2023-09-01 01:32:06,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.58333333333334) internal successors, (2179), 12 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:06,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:06,775 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:06,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2023-09-01 01:32:06,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:06,976 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:06,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:06,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1749747478, now seen corresponding path program 20 times [2023-09-01 01:32:06,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:06,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096037096] [2023-09-01 01:32:06,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:32:06,977 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:06,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:06,977 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:06,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-09-01 01:32:07,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:32:07,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:32:07,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 31 conjunts are in the unsatisfiable core [2023-09-01 01:32:07,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:07,237 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:32:07,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:32:07,690 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:32:07,691 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-09-01 01:32:08,485 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:32:08,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:32:08,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:32:08,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:32:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:08,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:32:08,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:08,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096037096] [2023-09-01 01:32:08,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096037096] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:32:08,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:32:08,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:32:08,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278740480] [2023-09-01 01:32:08,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:32:08,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:32:08,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:08,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:32:08,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:32:13,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 476 [2023-09-01 01:32:13,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 104 transitions, 1290 flow. Second operand has 12 states, 12 states have (on average 181.58333333333334) internal successors, (2179), 12 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:13,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:13,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 476 [2023-09-01 01:32:13,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:18,414 INFO L130 PetriNetUnfolder]: 3978/7191 cut-off events. [2023-09-01 01:32:18,414 INFO L131 PetriNetUnfolder]: For 38043/38045 co-relation queries the response was YES. [2023-09-01 01:32:18,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29040 conditions, 7191 events. 3978/7191 cut-off events. For 38043/38045 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45880 event pairs, 2360 based on Foata normal form. 1/7192 useless extension candidates. Maximal degree in co-relation 28974. Up to 4312 conditions per place. [2023-09-01 01:32:18,465 INFO L137 encePairwiseOnDemand]: 466/476 looper letters, 122 selfloop transitions, 33 changer transitions 16/172 dead transitions. [2023-09-01 01:32:18,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 172 transitions, 2083 flow [2023-09-01 01:32:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:32:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:32:18,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1694 transitions. [2023-09-01 01:32:18,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3954248366013072 [2023-09-01 01:32:18,468 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1694 transitions. [2023-09-01 01:32:18,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1694 transitions. [2023-09-01 01:32:18,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:18,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1694 transitions. [2023-09-01 01:32:18,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 188.22222222222223) internal successors, (1694), 9 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:18,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:18,472 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:18,472 INFO L175 Difference]: Start difference. First operand has 161 places, 104 transitions, 1290 flow. Second operand 9 states and 1694 transitions. [2023-09-01 01:32:18,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 172 transitions, 2083 flow [2023-09-01 01:32:18,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 172 transitions, 1997 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-09-01 01:32:18,550 INFO L231 Difference]: Finished difference. Result has 165 places, 100 transitions, 1229 flow [2023-09-01 01:32:18,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=165, PETRI_TRANSITIONS=100} [2023-09-01 01:32:18,551 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 110 predicate places. [2023-09-01 01:32:18,551 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 100 transitions, 1229 flow [2023-09-01 01:32:18,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 181.58333333333334) internal successors, (2179), 12 states have internal predecessors, (2179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:18,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:18,551 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:18,559 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2023-09-01 01:32:18,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:18,752 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:18,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:18,752 INFO L85 PathProgramCache]: Analyzing trace with hash -502609790, now seen corresponding path program 21 times [2023-09-01 01:32:18,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:18,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722364127] [2023-09-01 01:32:18,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:32:18,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:18,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:18,754 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:18,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-09-01 01:32:18,985 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:32:18,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:32:18,991 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 01:32:18,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:18,998 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:32:19,087 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:32:19,171 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:32:19,288 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:32:19,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:32:19,295 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:32:19,295 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:32:19,531 INFO L321 Elim1Store]: treesize reduction 28, result has 71.1 percent of original size [2023-09-01 01:32:19,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 181 treesize of output 137 [2023-09-01 01:32:19,601 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:19,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:32:19,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:19,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722364127] [2023-09-01 01:32:19,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [722364127] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:32:19,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:32:19,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:32:19,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033178839] [2023-09-01 01:32:19,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:32:19,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:32:19,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:19,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:32:19,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:32:21,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 476 [2023-09-01 01:32:21,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 100 transitions, 1229 flow. Second operand has 12 states, 12 states have (on average 180.58333333333334) internal successors, (2167), 12 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:21,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:21,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 476 [2023-09-01 01:32:21,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:23,825 INFO L130 PetriNetUnfolder]: 3965/7165 cut-off events. [2023-09-01 01:32:23,825 INFO L131 PetriNetUnfolder]: For 35690/35692 co-relation queries the response was YES. [2023-09-01 01:32:23,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29034 conditions, 7165 events. 3965/7165 cut-off events. For 35690/35692 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45481 event pairs, 2472 based on Foata normal form. 1/7166 useless extension candidates. Maximal degree in co-relation 28967. Up to 4306 conditions per place. [2023-09-01 01:32:23,881 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 100 selfloop transitions, 43 changer transitions 7/151 dead transitions. [2023-09-01 01:32:23,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 151 transitions, 1876 flow [2023-09-01 01:32:23,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:32:23,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:32:23,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1857 transitions. [2023-09-01 01:32:23,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39012605042016807 [2023-09-01 01:32:23,883 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1857 transitions. [2023-09-01 01:32:23,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1857 transitions. [2023-09-01 01:32:23,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:23,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1857 transitions. [2023-09-01 01:32:23,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.7) internal successors, (1857), 10 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:23,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:23,887 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:23,887 INFO L175 Difference]: Start difference. First operand has 165 places, 100 transitions, 1229 flow. Second operand 10 states and 1857 transitions. [2023-09-01 01:32:23,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 151 transitions, 1876 flow [2023-09-01 01:32:23,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 151 transitions, 1764 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-09-01 01:32:23,972 INFO L231 Difference]: Finished difference. Result has 161 places, 106 transitions, 1348 flow [2023-09-01 01:32:23,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1348, PETRI_PLACES=161, PETRI_TRANSITIONS=106} [2023-09-01 01:32:23,973 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 106 predicate places. [2023-09-01 01:32:23,973 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 106 transitions, 1348 flow [2023-09-01 01:32:23,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 180.58333333333334) internal successors, (2167), 12 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:23,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:23,973 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:23,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-09-01 01:32:24,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:24,174 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:24,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:24,174 INFO L85 PathProgramCache]: Analyzing trace with hash -418674816, now seen corresponding path program 22 times [2023-09-01 01:32:24,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:24,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1139584335] [2023-09-01 01:32:24,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:32:24,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:24,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:24,176 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:24,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-09-01 01:32:24,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:32:24,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:32:24,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 27 conjunts are in the unsatisfiable core [2023-09-01 01:32:24,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:24,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:32:24,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:32:24,887 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:32:24,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:32:24,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:32:24,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:32:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:24,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:32:24,954 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:24,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1139584335] [2023-09-01 01:32:24,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1139584335] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:32:24,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:32:24,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:32:24,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117648746] [2023-09-01 01:32:24,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:32:24,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:32:24,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:24,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:32:24,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:32:26,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:32:26,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 106 transitions, 1348 flow. Second operand has 12 states, 12 states have (on average 182.58333333333334) internal successors, (2191), 12 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:26,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:26,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:32:26,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:28,577 INFO L130 PetriNetUnfolder]: 3956/7154 cut-off events. [2023-09-01 01:32:28,578 INFO L131 PetriNetUnfolder]: For 35687/35689 co-relation queries the response was YES. [2023-09-01 01:32:28,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29070 conditions, 7154 events. 3956/7154 cut-off events. For 35687/35689 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45159 event pairs, 2669 based on Foata normal form. 7/7161 useless extension candidates. Maximal degree in co-relation 29006. Up to 4306 conditions per place. [2023-09-01 01:32:28,638 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 109 selfloop transitions, 42 changer transitions 5/157 dead transitions. [2023-09-01 01:32:28,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1931 flow [2023-09-01 01:32:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:32:28,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:32:28,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1883 transitions. [2023-09-01 01:32:28,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39558823529411763 [2023-09-01 01:32:28,641 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1883 transitions. [2023-09-01 01:32:28,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1883 transitions. [2023-09-01 01:32:28,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:28,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1883 transitions. [2023-09-01 01:32:28,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 188.3) internal successors, (1883), 10 states have internal predecessors, (1883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:28,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:28,645 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:28,645 INFO L175 Difference]: Start difference. First operand has 161 places, 106 transitions, 1348 flow. Second operand 10 states and 1883 transitions. [2023-09-01 01:32:28,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1931 flow [2023-09-01 01:32:28,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 157 transitions, 1833 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-09-01 01:32:28,725 INFO L231 Difference]: Finished difference. Result has 164 places, 107 transitions, 1369 flow [2023-09-01 01:32:28,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1260, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1369, PETRI_PLACES=164, PETRI_TRANSITIONS=107} [2023-09-01 01:32:28,726 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 109 predicate places. [2023-09-01 01:32:28,726 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 107 transitions, 1369 flow [2023-09-01 01:32:28,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 182.58333333333334) internal successors, (2191), 12 states have internal predecessors, (2191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:28,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:28,726 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:28,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2023-09-01 01:32:28,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:28,929 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:28,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:28,929 INFO L85 PathProgramCache]: Analyzing trace with hash 601716316, now seen corresponding path program 23 times [2023-09-01 01:32:28,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:28,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470907341] [2023-09-01 01:32:28,930 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:32:28,930 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:28,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:28,931 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:28,932 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-09-01 01:32:29,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:32:29,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:32:29,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 01:32:29,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:29,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:32:29,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:32:29,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:32:29,831 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:32:29,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:32:29,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:32:29,843 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:32:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:29,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:32:29,890 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:29,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470907341] [2023-09-01 01:32:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470907341] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:32:29,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:32:29,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:32:29,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159048784] [2023-09-01 01:32:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:32:29,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:32:29,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:29,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:32:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:32:32,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 476 [2023-09-01 01:32:32,326 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 107 transitions, 1369 flow. Second operand has 12 states, 12 states have (on average 180.58333333333334) internal successors, (2167), 12 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:32,326 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:32,327 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 476 [2023-09-01 01:32:32,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:34,242 INFO L130 PetriNetUnfolder]: 3955/7147 cut-off events. [2023-09-01 01:32:34,243 INFO L131 PetriNetUnfolder]: For 33101/33103 co-relation queries the response was YES. [2023-09-01 01:32:34,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29058 conditions, 7147 events. 3955/7147 cut-off events. For 33101/33103 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 45348 event pairs, 2465 based on Foata normal form. 1/7148 useless extension candidates. Maximal degree in co-relation 28993. Up to 4306 conditions per place. [2023-09-01 01:32:34,286 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 100 selfloop transitions, 40 changer transitions 12/153 dead transitions. [2023-09-01 01:32:34,287 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 153 transitions, 1925 flow [2023-09-01 01:32:34,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:32:34,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:32:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1858 transitions. [2023-09-01 01:32:34,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903361344537815 [2023-09-01 01:32:34,291 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1858 transitions. [2023-09-01 01:32:34,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1858 transitions. [2023-09-01 01:32:34,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:34,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1858 transitions. [2023-09-01 01:32:34,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 185.8) internal successors, (1858), 10 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:34,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:34,296 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:34,296 INFO L175 Difference]: Start difference. First operand has 164 places, 107 transitions, 1369 flow. Second operand 10 states and 1858 transitions. [2023-09-01 01:32:34,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 153 transitions, 1925 flow [2023-09-01 01:32:34,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 153 transitions, 1832 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-09-01 01:32:34,404 INFO L231 Difference]: Finished difference. Result has 167 places, 105 transitions, 1334 flow [2023-09-01 01:32:34,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1282, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1334, PETRI_PLACES=167, PETRI_TRANSITIONS=105} [2023-09-01 01:32:34,405 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2023-09-01 01:32:34,405 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 105 transitions, 1334 flow [2023-09-01 01:32:34,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 180.58333333333334) internal successors, (2167), 12 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:34,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:34,405 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:34,415 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-09-01 01:32:34,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:34,606 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:34,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:34,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1488471592, now seen corresponding path program 1 times [2023-09-01 01:32:34,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:34,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589379167] [2023-09-01 01:32:34,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:32:34,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:34,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:34,608 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:34,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-09-01 01:32:34,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:32:34,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:32:34,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:35,089 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:35,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:32:35,089 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:35,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589379167] [2023-09-01 01:32:35,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589379167] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:32:35,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:32:35,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 01:32:35,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552753067] [2023-09-01 01:32:35,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:32:35,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 01:32:35,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:35,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 01:32:35,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 01:32:36,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:32:36,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 105 transitions, 1334 flow. Second operand has 9 states, 9 states have (on average 195.22222222222223) internal successors, (1757), 9 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:36,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:36,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:32:36,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:37,807 INFO L130 PetriNetUnfolder]: 4075/7380 cut-off events. [2023-09-01 01:32:37,807 INFO L131 PetriNetUnfolder]: For 35172/35174 co-relation queries the response was YES. [2023-09-01 01:32:37,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30034 conditions, 7380 events. 4075/7380 cut-off events. For 35172/35174 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 47448 event pairs, 2465 based on Foata normal form. 44/7424 useless extension candidates. Maximal degree in co-relation 29968. Up to 4312 conditions per place. [2023-09-01 01:32:37,853 INFO L137 encePairwiseOnDemand]: 467/476 looper letters, 121 selfloop transitions, 35 changer transitions 0/157 dead transitions. [2023-09-01 01:32:37,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 157 transitions, 1964 flow [2023-09-01 01:32:37,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 01:32:37,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 01:32:37,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1416 transitions. [2023-09-01 01:32:37,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4249699879951981 [2023-09-01 01:32:37,856 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1416 transitions. [2023-09-01 01:32:37,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1416 transitions. [2023-09-01 01:32:37,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:37,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1416 transitions. [2023-09-01 01:32:37,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 202.28571428571428) internal successors, (1416), 7 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:37,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:37,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:37,858 INFO L175 Difference]: Start difference. First operand has 167 places, 105 transitions, 1334 flow. Second operand 7 states and 1416 transitions. [2023-09-01 01:32:37,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 157 transitions, 1964 flow [2023-09-01 01:32:37,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 157 transitions, 1870 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-09-01 01:32:37,943 INFO L231 Difference]: Finished difference. Result has 158 places, 106 transitions, 1329 flow [2023-09-01 01:32:37,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1244, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1329, PETRI_PLACES=158, PETRI_TRANSITIONS=106} [2023-09-01 01:32:37,944 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 103 predicate places. [2023-09-01 01:32:37,944 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 106 transitions, 1329 flow [2023-09-01 01:32:37,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 195.22222222222223) internal successors, (1757), 9 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:37,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:37,944 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:37,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2023-09-01 01:32:38,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:38,145 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:38,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:38,145 INFO L85 PathProgramCache]: Analyzing trace with hash -887676688, now seen corresponding path program 2 times [2023-09-01 01:32:38,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:38,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455331523] [2023-09-01 01:32:38,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:32:38,145 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:38,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:38,146 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:38,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-09-01 01:32:38,484 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 01:32:38,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:32:38,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:32:38,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:38,634 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:38,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:32:42,145 INFO L321 Elim1Store]: treesize reduction 506, result has 65.5 percent of original size [2023-09-01 01:32:42,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 172 treesize of output 990 [2023-09-01 01:32:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:42,703 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:42,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455331523] [2023-09-01 01:32:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455331523] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:32:42,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:32:42,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2023-09-01 01:32:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730387737] [2023-09-01 01:32:42,704 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:32:42,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:32:42,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:42,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:32:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:32:44,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:32:44,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 106 transitions, 1329 flow. Second operand has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:44,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:44,798 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:32:44,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:32:47,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:32:48,874 INFO L130 PetriNetUnfolder]: 4274/7691 cut-off events. [2023-09-01 01:32:48,874 INFO L131 PetriNetUnfolder]: For 39178/39178 co-relation queries the response was YES. [2023-09-01 01:32:48,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31239 conditions, 7691 events. 4274/7691 cut-off events. For 39178/39178 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 49599 event pairs, 2587 based on Foata normal form. 42/7733 useless extension candidates. Maximal degree in co-relation 31177. Up to 4311 conditions per place. [2023-09-01 01:32:48,940 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 165 selfloop transitions, 49 changer transitions 2/217 dead transitions. [2023-09-01 01:32:48,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 217 transitions, 2586 flow [2023-09-01 01:32:48,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:32:48,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:32:48,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2217 transitions. [2023-09-01 01:32:48,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423414820473644 [2023-09-01 01:32:48,943 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2217 transitions. [2023-09-01 01:32:48,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2217 transitions. [2023-09-01 01:32:48,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:32:48,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2217 transitions. [2023-09-01 01:32:48,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 201.54545454545453) internal successors, (2217), 11 states have internal predecessors, (2217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:48,947 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:48,947 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:48,948 INFO L175 Difference]: Start difference. First operand has 158 places, 106 transitions, 1329 flow. Second operand 11 states and 2217 transitions. [2023-09-01 01:32:48,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 217 transitions, 2586 flow [2023-09-01 01:32:49,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 217 transitions, 2498 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 01:32:49,031 INFO L231 Difference]: Finished difference. Result has 167 places, 123 transitions, 1596 flow [2023-09-01 01:32:49,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1255, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1596, PETRI_PLACES=167, PETRI_TRANSITIONS=123} [2023-09-01 01:32:49,032 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 112 predicate places. [2023-09-01 01:32:49,032 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 123 transitions, 1596 flow [2023-09-01 01:32:49,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:49,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:32:49,033 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:32:49,045 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2023-09-01 01:32:49,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:49,244 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:32:49,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:32:49,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1546579316, now seen corresponding path program 3 times [2023-09-01 01:32:49,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:32:49,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091962144] [2023-09-01 01:32:49,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:32:49,245 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:32:49,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:32:49,246 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:32:49,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-09-01 01:32:49,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 01:32:49,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:32:49,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 01:32:49,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:32:49,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:49,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:32:53,366 INFO L321 Elim1Store]: treesize reduction 506, result has 65.5 percent of original size [2023-09-01 01:32:53,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 257 treesize of output 1005 [2023-09-01 01:32:53,633 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:32:53,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:32:53,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091962144] [2023-09-01 01:32:53,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091962144] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:32:53,633 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:32:53,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2023-09-01 01:32:53,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230855948] [2023-09-01 01:32:53,634 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:32:53,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:32:53,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:32:53,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:32:53,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:32:57,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:32:57,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 123 transitions, 1596 flow. Second operand has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:32:57,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:32:57,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:32:57,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:33:00,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:01,602 INFO L130 PetriNetUnfolder]: 4106/7379 cut-off events. [2023-09-01 01:33:01,603 INFO L131 PetriNetUnfolder]: For 38829/38829 co-relation queries the response was YES. [2023-09-01 01:33:01,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30338 conditions, 7379 events. 4106/7379 cut-off events. For 38829/38829 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 46864 event pairs, 2755 based on Foata normal form. 42/7421 useless extension candidates. Maximal degree in co-relation 30272. Up to 4312 conditions per place. [2023-09-01 01:33:01,659 INFO L137 encePairwiseOnDemand]: 466/476 looper letters, 133 selfloop transitions, 51 changer transitions 0/185 dead transitions. [2023-09-01 01:33:01,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 185 transitions, 2348 flow [2023-09-01 01:33:01,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:33:01,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:33:01,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2012 transitions. [2023-09-01 01:33:01,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4226890756302521 [2023-09-01 01:33:01,662 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2012 transitions. [2023-09-01 01:33:01,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2012 transitions. [2023-09-01 01:33:01,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:33:01,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2012 transitions. [2023-09-01 01:33:01,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.2) internal successors, (2012), 10 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:01,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:01,667 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:01,667 INFO L175 Difference]: Start difference. First operand has 167 places, 123 transitions, 1596 flow. Second operand 10 states and 2012 transitions. [2023-09-01 01:33:01,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 185 transitions, 2348 flow [2023-09-01 01:33:01,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 185 transitions, 2278 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-09-01 01:33:01,743 INFO L231 Difference]: Finished difference. Result has 174 places, 125 transitions, 1680 flow [2023-09-01 01:33:01,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1528, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1680, PETRI_PLACES=174, PETRI_TRANSITIONS=125} [2023-09-01 01:33:01,743 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 119 predicate places. [2023-09-01 01:33:01,743 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 125 transitions, 1680 flow [2023-09-01 01:33:01,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:01,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:33:01,744 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:33:01,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Ended with exit code 0 [2023-09-01 01:33:01,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:01,944 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:33:01,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:33:01,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1657310316, now seen corresponding path program 4 times [2023-09-01 01:33:01,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:33:01,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62304724] [2023-09-01 01:33:01,945 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:33:01,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:01,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:33:01,946 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:33:01,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2023-09-01 01:33:02,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:33:02,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:33:02,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 01:33:02,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:33:02,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:33:02,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:33:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:02,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:33:02,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:33:02,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62304724] [2023-09-01 01:33:02,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62304724] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:33:02,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:33:02,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:33:02,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582646552] [2023-09-01 01:33:02,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:33:02,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 01:33:02,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:33:02,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 01:33:02,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-09-01 01:33:04,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 476 [2023-09-01 01:33:04,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 125 transitions, 1680 flow. Second operand has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:04,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:33:04,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 476 [2023-09-01 01:33:04,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:33:06,074 INFO L130 PetriNetUnfolder]: 3938/7061 cut-off events. [2023-09-01 01:33:06,075 INFO L131 PetriNetUnfolder]: For 36940/36940 co-relation queries the response was YES. [2023-09-01 01:33:06,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29477 conditions, 7061 events. 3938/7061 cut-off events. For 36940/36940 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 44273 event pairs, 2407 based on Foata normal form. 42/7102 useless extension candidates. Maximal degree in co-relation 29410. Up to 4306 conditions per place. [2023-09-01 01:33:06,133 INFO L137 encePairwiseOnDemand]: 467/476 looper letters, 118 selfloop transitions, 52 changer transitions 2/173 dead transitions. [2023-09-01 01:33:06,134 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 173 transitions, 2319 flow [2023-09-01 01:33:06,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:33:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:33:06,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1582 transitions. [2023-09-01 01:33:06,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41544117647058826 [2023-09-01 01:33:06,136 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1582 transitions. [2023-09-01 01:33:06,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1582 transitions. [2023-09-01 01:33:06,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:33:06,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1582 transitions. [2023-09-01 01:33:06,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 197.75) internal successors, (1582), 8 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:06,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:06,139 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:06,139 INFO L175 Difference]: Start difference. First operand has 174 places, 125 transitions, 1680 flow. Second operand 8 states and 1582 transitions. [2023-09-01 01:33:06,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 173 transitions, 2319 flow [2023-09-01 01:33:06,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 173 transitions, 2250 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-09-01 01:33:06,220 INFO L231 Difference]: Finished difference. Result has 176 places, 124 transitions, 1704 flow [2023-09-01 01:33:06,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1611, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1704, PETRI_PLACES=176, PETRI_TRANSITIONS=124} [2023-09-01 01:33:06,221 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 121 predicate places. [2023-09-01 01:33:06,221 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 124 transitions, 1704 flow [2023-09-01 01:33:06,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 192.0) internal successors, (1920), 10 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:06,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:33:06,221 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:33:06,230 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2023-09-01 01:33:06,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:06,422 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:33:06,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:33:06,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1981768276, now seen corresponding path program 5 times [2023-09-01 01:33:06,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:33:06,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1169986294] [2023-09-01 01:33:06,422 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:33:06,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:06,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:33:06,423 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:33:06,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2023-09-01 01:33:06,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:33:06,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:33:06,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:33:06,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:33:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:06,989 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:33:10,413 INFO L321 Elim1Store]: treesize reduction 506, result has 65.5 percent of original size [2023-09-01 01:33:10,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 172 treesize of output 990 [2023-09-01 01:33:10,855 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:10,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:33:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1169986294] [2023-09-01 01:33:10,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1169986294] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:33:10,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:33:10,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2023-09-01 01:33:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913790947] [2023-09-01 01:33:10,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:33:10,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:33:10,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:33:10,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:33:10,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:33:12,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:33:12,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 124 transitions, 1704 flow. Second operand has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:12,891 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:33:12,891 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:33:12,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:33:15,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:17,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:19,240 INFO L130 PetriNetUnfolder]: 4585/8220 cut-off events. [2023-09-01 01:33:19,240 INFO L131 PetriNetUnfolder]: For 53268/53268 co-relation queries the response was YES. [2023-09-01 01:33:19,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35869 conditions, 8220 events. 4585/8220 cut-off events. For 53268/53268 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 54055 event pairs, 3028 based on Foata normal form. 42/8262 useless extension candidates. Maximal degree in co-relation 35802. Up to 6354 conditions per place. [2023-09-01 01:33:19,300 INFO L137 encePairwiseOnDemand]: 466/476 looper letters, 167 selfloop transitions, 36 changer transitions 0/204 dead transitions. [2023-09-01 01:33:19,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 204 transitions, 2680 flow [2023-09-01 01:33:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:33:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:33:19,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2013 transitions. [2023-09-01 01:33:19,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42289915966386554 [2023-09-01 01:33:19,303 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2013 transitions. [2023-09-01 01:33:19,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2013 transitions. [2023-09-01 01:33:19,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:33:19,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2013 transitions. [2023-09-01 01:33:19,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.3) internal successors, (2013), 10 states have internal predecessors, (2013), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:19,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:19,306 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:19,306 INFO L175 Difference]: Start difference. First operand has 176 places, 124 transitions, 1704 flow. Second operand 10 states and 2013 transitions. [2023-09-01 01:33:19,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 204 transitions, 2680 flow [2023-09-01 01:33:19,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 204 transitions, 2556 flow, removed 1 selfloop flow, removed 8 redundant places. [2023-09-01 01:33:19,396 INFO L231 Difference]: Finished difference. Result has 180 places, 131 transitions, 1807 flow [2023-09-01 01:33:19,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1594, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1807, PETRI_PLACES=180, PETRI_TRANSITIONS=131} [2023-09-01 01:33:19,396 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 125 predicate places. [2023-09-01 01:33:19,396 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 131 transitions, 1807 flow [2023-09-01 01:33:19,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:19,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:33:19,397 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:33:19,410 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2023-09-01 01:33:19,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:19,610 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:33:19,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:33:19,610 INFO L85 PathProgramCache]: Analyzing trace with hash 66230576, now seen corresponding path program 6 times [2023-09-01 01:33:19,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:33:19,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691035526] [2023-09-01 01:33:19,610 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:33:19,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:19,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:33:19,611 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:33:19,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-09-01 01:33:19,995 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 01:33:19,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:33:20,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 01:33:20,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:33:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:20,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:33:23,523 INFO L321 Elim1Store]: treesize reduction 420, result has 66.7 percent of original size [2023-09-01 01:33:23,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 146 treesize of output 872 [2023-09-01 01:33:23,733 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:23,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:33:23,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691035526] [2023-09-01 01:33:23,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1691035526] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:33:23,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:33:23,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2023-09-01 01:33:23,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915327828] [2023-09-01 01:33:23,734 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:33:23,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:33:23,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:33:23,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:33:23,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:33:25,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:33:25,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 131 transitions, 1807 flow. Second operand has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:25,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:33:25,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:33:25,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:33:28,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:30,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:32,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:34,254 INFO L130 PetriNetUnfolder]: 4417/7796 cut-off events. [2023-09-01 01:33:34,254 INFO L131 PetriNetUnfolder]: For 47014/47014 co-relation queries the response was YES. [2023-09-01 01:33:34,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34163 conditions, 7796 events. 4417/7796 cut-off events. For 47014/47014 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 51047 event pairs, 419 based on Foata normal form. 42/7838 useless extension candidates. Maximal degree in co-relation 34094. Up to 6243 conditions per place. [2023-09-01 01:33:34,329 INFO L137 encePairwiseOnDemand]: 467/476 looper letters, 173 selfloop transitions, 25 changer transitions 2/201 dead transitions. [2023-09-01 01:33:34,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 201 transitions, 2674 flow [2023-09-01 01:33:34,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:33:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:33:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1617 transitions. [2023-09-01 01:33:34,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42463235294117646 [2023-09-01 01:33:34,331 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1617 transitions. [2023-09-01 01:33:34,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1617 transitions. [2023-09-01 01:33:34,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:33:34,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1617 transitions. [2023-09-01 01:33:34,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 202.125) internal successors, (1617), 8 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:34,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:34,334 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:34,335 INFO L175 Difference]: Start difference. First operand has 180 places, 131 transitions, 1807 flow. Second operand 8 states and 1617 transitions. [2023-09-01 01:33:34,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 201 transitions, 2674 flow [2023-09-01 01:33:34,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 201 transitions, 2638 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-09-01 01:33:34,440 INFO L231 Difference]: Finished difference. Result has 185 places, 132 transitions, 1848 flow [2023-09-01 01:33:34,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1848, PETRI_PLACES=185, PETRI_TRANSITIONS=132} [2023-09-01 01:33:34,440 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2023-09-01 01:33:34,441 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 132 transitions, 1848 flow [2023-09-01 01:33:34,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:34,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:33:34,442 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:33:34,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2023-09-01 01:33:34,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:34,642 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:33:34,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:33:34,643 INFO L85 PathProgramCache]: Analyzing trace with hash 452487728, now seen corresponding path program 7 times [2023-09-01 01:33:34,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:33:34,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762643507] [2023-09-01 01:33:34,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:33:34,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:34,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:33:34,644 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:33:34,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2023-09-01 01:33:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:33:34,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 01:33:34,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:33:35,164 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:35,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:33:39,038 INFO L321 Elim1Store]: treesize reduction 506, result has 65.5 percent of original size [2023-09-01 01:33:39,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 257 treesize of output 1005 [2023-09-01 01:33:39,278 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:33:39,278 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:33:39,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762643507] [2023-09-01 01:33:39,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762643507] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:33:39,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:33:39,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 13 [2023-09-01 01:33:39,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549751409] [2023-09-01 01:33:39,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:33:39,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:33:39,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:33:39,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:33:39,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:33:42,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:33:42,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 132 transitions, 1848 flow. Second operand has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:42,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:33:42,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:33:42,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:33:44,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:46,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-09-01 01:33:48,362 INFO L130 PetriNetUnfolder]: 4249/7516 cut-off events. [2023-09-01 01:33:48,363 INFO L131 PetriNetUnfolder]: For 49411/49411 co-relation queries the response was YES. [2023-09-01 01:33:48,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32711 conditions, 7516 events. 4249/7516 cut-off events. For 49411/49411 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 47555 event pairs, 3051 based on Foata normal form. 42/7558 useless extension candidates. Maximal degree in co-relation 32641. Up to 6678 conditions per place. [2023-09-01 01:33:48,435 INFO L137 encePairwiseOnDemand]: 467/476 looper letters, 135 selfloop transitions, 34 changer transitions 2/172 dead transitions. [2023-09-01 01:33:48,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 2411 flow [2023-09-01 01:33:48,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:33:48,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:33:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1611 transitions. [2023-09-01 01:33:48,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4230567226890756 [2023-09-01 01:33:48,438 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1611 transitions. [2023-09-01 01:33:48,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1611 transitions. [2023-09-01 01:33:48,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:33:48,438 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1611 transitions. [2023-09-01 01:33:48,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 201.375) internal successors, (1611), 8 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:48,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:48,441 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:48,441 INFO L175 Difference]: Start difference. First operand has 185 places, 132 transitions, 1848 flow. Second operand 8 states and 1611 transitions. [2023-09-01 01:33:48,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 2411 flow [2023-09-01 01:33:48,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 172 transitions, 2318 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-09-01 01:33:48,513 INFO L231 Difference]: Finished difference. Result has 185 places, 130 transitions, 1788 flow [2023-09-01 01:33:48,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1755, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1788, PETRI_PLACES=185, PETRI_TRANSITIONS=130} [2023-09-01 01:33:48,513 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2023-09-01 01:33:48,513 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 130 transitions, 1788 flow [2023-09-01 01:33:48,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 195.69230769230768) internal successors, (2544), 13 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:33:48,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:33:48,514 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:33:48,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2023-09-01 01:33:48,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:48,714 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:33:48,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:33:48,715 INFO L85 PathProgramCache]: Analyzing trace with hash 151703648, now seen corresponding path program 3 times [2023-09-01 01:33:48,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:33:48,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211911117] [2023-09-01 01:33:48,715 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:33:48,715 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:33:48,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:33:48,716 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:33:48,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-09-01 01:33:49,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 01:33:49,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:33:50,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:33:50,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:33:50,049 INFO L321 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-09-01 01:33:50,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-09-01 01:33:50,084 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 01:33:50,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2023-09-01 01:33:50,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:33:50,132 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2023-09-01 01:33:50,140 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-09-01 01:33:50,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-09-01 01:33:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-09-01 01:33:50,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:33:50,713 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 30 proven. 15 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-09-01 01:33:50,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:33:50,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211911117] [2023-09-01 01:33:50,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211911117] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:33:50,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:33:50,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2023-09-01 01:33:50,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987790844] [2023-09-01 01:33:50,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:33:50,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 01:33:50,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:33:50,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 01:33:50,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2023-09-01 01:34:00,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 476 [2023-09-01 01:34:00,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 130 transitions, 1788 flow. Second operand has 18 states, 18 states have (on average 191.77777777777777) internal successors, (3452), 18 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:00,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:00,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 476 [2023-09-01 01:34:00,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:02,119 INFO L130 PetriNetUnfolder]: 2167/3916 cut-off events. [2023-09-01 01:34:02,119 INFO L131 PetriNetUnfolder]: For 20996/20996 co-relation queries the response was YES. [2023-09-01 01:34:02,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17016 conditions, 3916 events. 2167/3916 cut-off events. For 20996/20996 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 23674 event pairs, 117 based on Foata normal form. 120/4036 useless extension candidates. Maximal degree in co-relation 16948. Up to 801 conditions per place. [2023-09-01 01:34:02,152 INFO L137 encePairwiseOnDemand]: 472/476 looper letters, 288 selfloop transitions, 25 changer transitions 0/314 dead transitions. [2023-09-01 01:34:02,152 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 314 transitions, 4260 flow [2023-09-01 01:34:02,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:34:02,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:34:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2017 transitions. [2023-09-01 01:34:02,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4237394957983193 [2023-09-01 01:34:02,154 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2017 transitions. [2023-09-01 01:34:02,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2017 transitions. [2023-09-01 01:34:02,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:02,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2017 transitions. [2023-09-01 01:34:02,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 201.7) internal successors, (2017), 10 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:02,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:02,158 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:02,158 INFO L175 Difference]: Start difference. First operand has 185 places, 130 transitions, 1788 flow. Second operand 10 states and 2017 transitions. [2023-09-01 01:34:02,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 314 transitions, 4260 flow [2023-09-01 01:34:02,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 314 transitions, 4057 flow, removed 15 selfloop flow, removed 21 redundant places. [2023-09-01 01:34:02,202 INFO L231 Difference]: Finished difference. Result has 163 places, 123 transitions, 1628 flow [2023-09-01 01:34:02,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1628, PETRI_PLACES=163, PETRI_TRANSITIONS=123} [2023-09-01 01:34:02,202 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 108 predicate places. [2023-09-01 01:34:02,202 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 123 transitions, 1628 flow [2023-09-01 01:34:02,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 191.77777777777777) internal successors, (3452), 18 states have internal predecessors, (3452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:02,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:02,203 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:02,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Ended with exit code 0 [2023-09-01 01:34:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:02,403 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:02,404 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash 676162797, now seen corresponding path program 1 times [2023-09-01 01:34:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:02,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1646926288] [2023-09-01 01:34:02,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:34:02,405 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:02,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:02,406 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:02,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-09-01 01:34:02,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:34:02,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:34:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:03,285 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:03,285 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:34:03,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:03,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:03,352 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:03,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:03,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:03,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1646926288] [2023-09-01 01:34:03,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1646926288] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:03,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:03,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:03,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501358824] [2023-09-01 01:34:03,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:03,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:03,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:03,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:03,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:05,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:34:05,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 123 transitions, 1628 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:05,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:05,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:34:05,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:08,335 INFO L130 PetriNetUnfolder]: 2897/5154 cut-off events. [2023-09-01 01:34:08,335 INFO L131 PetriNetUnfolder]: For 19077/19077 co-relation queries the response was YES. [2023-09-01 01:34:08,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20706 conditions, 5154 events. 2897/5154 cut-off events. For 19077/19077 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 30618 event pairs, 1419 based on Foata normal form. 5/5159 useless extension candidates. Maximal degree in co-relation 20651. Up to 2553 conditions per place. [2023-09-01 01:34:08,370 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 165 selfloop transitions, 61 changer transitions 10/236 dead transitions. [2023-09-01 01:34:08,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 236 transitions, 2896 flow [2023-09-01 01:34:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:34:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:34:08,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2291 transitions. [2023-09-01 01:34:08,373 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010854341736695 [2023-09-01 01:34:08,373 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2291 transitions. [2023-09-01 01:34:08,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2291 transitions. [2023-09-01 01:34:08,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:08,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2291 transitions. [2023-09-01 01:34:08,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.91666666666666) internal successors, (2291), 12 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:08,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:08,378 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:08,378 INFO L175 Difference]: Start difference. First operand has 163 places, 123 transitions, 1628 flow. Second operand 12 states and 2291 transitions. [2023-09-01 01:34:08,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 236 transitions, 2896 flow [2023-09-01 01:34:08,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 236 transitions, 2774 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 01:34:08,422 INFO L231 Difference]: Finished difference. Result has 173 places, 138 transitions, 1926 flow [2023-09-01 01:34:08,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1926, PETRI_PLACES=173, PETRI_TRANSITIONS=138} [2023-09-01 01:34:08,422 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 118 predicate places. [2023-09-01 01:34:08,422 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 138 transitions, 1926 flow [2023-09-01 01:34:08,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:08,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:08,423 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:08,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Ended with exit code 0 [2023-09-01 01:34:08,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:08,623 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:08,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:08,624 INFO L85 PathProgramCache]: Analyzing trace with hash 2101332991, now seen corresponding path program 2 times [2023-09-01 01:34:08,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:08,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418570376] [2023-09-01 01:34:08,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:34:08,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:08,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:08,625 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:08,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2023-09-01 01:34:08,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:34:08,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:08,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:34:08,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:09,344 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:09,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:34:09,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:09,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:09,440 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:09,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:09,440 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:09,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418570376] [2023-09-01 01:34:09,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418570376] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:09,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:09,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:09,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219942100] [2023-09-01 01:34:09,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:09,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:09,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:09,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:09,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:11,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:34:11,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 138 transitions, 1926 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:11,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:11,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:34:11,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:14,202 INFO L130 PetriNetUnfolder]: 2942/5235 cut-off events. [2023-09-01 01:34:14,202 INFO L131 PetriNetUnfolder]: For 22587/22587 co-relation queries the response was YES. [2023-09-01 01:34:14,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22317 conditions, 5235 events. 2942/5235 cut-off events. For 22587/22587 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 31209 event pairs, 1465 based on Foata normal form. 3/5238 useless extension candidates. Maximal degree in co-relation 22255. Up to 2561 conditions per place. [2023-09-01 01:34:14,244 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 179 selfloop transitions, 71 changer transitions 5/255 dead transitions. [2023-09-01 01:34:14,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 255 transitions, 3138 flow [2023-09-01 01:34:14,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 01:34:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 01:34:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2666 transitions. [2023-09-01 01:34:14,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40006002400960383 [2023-09-01 01:34:14,248 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2666 transitions. [2023-09-01 01:34:14,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2666 transitions. [2023-09-01 01:34:14,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:14,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2666 transitions. [2023-09-01 01:34:14,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 190.42857142857142) internal successors, (2666), 14 states have internal predecessors, (2666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:14,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:14,253 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:14,253 INFO L175 Difference]: Start difference. First operand has 173 places, 138 transitions, 1926 flow. Second operand 14 states and 2666 transitions. [2023-09-01 01:34:14,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 255 transitions, 3138 flow [2023-09-01 01:34:14,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 255 transitions, 3029 flow, removed 23 selfloop flow, removed 5 redundant places. [2023-09-01 01:34:14,321 INFO L231 Difference]: Finished difference. Result has 185 places, 149 transitions, 2182 flow [2023-09-01 01:34:14,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=1848, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2182, PETRI_PLACES=185, PETRI_TRANSITIONS=149} [2023-09-01 01:34:14,322 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 130 predicate places. [2023-09-01 01:34:14,322 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 149 transitions, 2182 flow [2023-09-01 01:34:14,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:14,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:14,323 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:14,333 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Ended with exit code 0 [2023-09-01 01:34:14,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:14,533 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:14,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:14,533 INFO L85 PathProgramCache]: Analyzing trace with hash 625467631, now seen corresponding path program 3 times [2023-09-01 01:34:14,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:14,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754942023] [2023-09-01 01:34:14,533 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:34:14,533 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:14,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:14,534 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:14,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2023-09-01 01:34:14,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:34:14,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:14,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:34:14,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:15,382 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:15,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:34:15,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:15,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:15,435 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:15,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:15,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:15,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754942023] [2023-09-01 01:34:15,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754942023] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:15,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:15,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:15,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957678792] [2023-09-01 01:34:15,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:15,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:15,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:15,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:15,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:17,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:34:17,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 149 transitions, 2182 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:17,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:17,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:34:17,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:20,565 INFO L130 PetriNetUnfolder]: 2937/5224 cut-off events. [2023-09-01 01:34:20,566 INFO L131 PetriNetUnfolder]: For 25812/25812 co-relation queries the response was YES. [2023-09-01 01:34:20,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23172 conditions, 5224 events. 2937/5224 cut-off events. For 25812/25812 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 31211 event pairs, 1439 based on Foata normal form. 5/5229 useless extension candidates. Maximal degree in co-relation 23106. Up to 2561 conditions per place. [2023-09-01 01:34:20,607 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 165 selfloop transitions, 69 changer transitions 10/244 dead transitions. [2023-09-01 01:34:20,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 244 transitions, 3208 flow [2023-09-01 01:34:20,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:34:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:34:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2485 transitions. [2023-09-01 01:34:20,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40158371040723984 [2023-09-01 01:34:20,610 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2485 transitions. [2023-09-01 01:34:20,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2485 transitions. [2023-09-01 01:34:20,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:20,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2485 transitions. [2023-09-01 01:34:20,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 191.15384615384616) internal successors, (2485), 13 states have internal predecessors, (2485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:20,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:20,615 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:20,615 INFO L175 Difference]: Start difference. First operand has 185 places, 149 transitions, 2182 flow. Second operand 13 states and 2485 transitions. [2023-09-01 01:34:20,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 244 transitions, 3208 flow [2023-09-01 01:34:20,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 244 transitions, 3070 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-09-01 01:34:20,692 INFO L231 Difference]: Finished difference. Result has 190 places, 148 transitions, 2187 flow [2023-09-01 01:34:20,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2187, PETRI_PLACES=190, PETRI_TRANSITIONS=148} [2023-09-01 01:34:20,692 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 135 predicate places. [2023-09-01 01:34:20,692 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 148 transitions, 2187 flow [2023-09-01 01:34:20,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:20,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:20,693 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:20,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2023-09-01 01:34:20,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:20,894 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:20,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:20,894 INFO L85 PathProgramCache]: Analyzing trace with hash 315308543, now seen corresponding path program 4 times [2023-09-01 01:34:20,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:20,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369789806] [2023-09-01 01:34:20,895 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:34:20,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:20,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:20,896 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:20,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2023-09-01 01:34:21,250 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:34:21,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:21,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:34:21,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:21,488 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-09-01 01:34:21,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:34:21,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:34:21,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:34:21,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:34:21,647 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:21,647 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:34:21,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:21,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:21,696 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:21,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369789806] [2023-09-01 01:34:21,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369789806] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:21,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:21,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:21,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905729617] [2023-09-01 01:34:21,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:21,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:21,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:21,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:21,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:24,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:34:24,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 148 transitions, 2187 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:24,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:24,222 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:34:24,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:26,782 INFO L130 PetriNetUnfolder]: 2961/5268 cut-off events. [2023-09-01 01:34:26,782 INFO L131 PetriNetUnfolder]: For 26871/26871 co-relation queries the response was YES. [2023-09-01 01:34:26,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23686 conditions, 5268 events. 2961/5268 cut-off events. For 26871/26871 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 31504 event pairs, 1595 based on Foata normal form. 3/5271 useless extension candidates. Maximal degree in co-relation 23619. Up to 3061 conditions per place. [2023-09-01 01:34:26,827 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 146 selfloop transitions, 68 changer transitions 9/223 dead transitions. [2023-09-01 01:34:26,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 223 transitions, 3122 flow [2023-09-01 01:34:26,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 01:34:26,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 01:34:26,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2635 transitions. [2023-09-01 01:34:26,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39540816326530615 [2023-09-01 01:34:26,830 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2635 transitions. [2023-09-01 01:34:26,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2635 transitions. [2023-09-01 01:34:26,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:26,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2635 transitions. [2023-09-01 01:34:26,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 188.21428571428572) internal successors, (2635), 14 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:26,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:26,835 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:26,835 INFO L175 Difference]: Start difference. First operand has 190 places, 148 transitions, 2187 flow. Second operand 14 states and 2635 transitions. [2023-09-01 01:34:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 223 transitions, 3122 flow [2023-09-01 01:34:26,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 223 transitions, 2952 flow, removed 9 selfloop flow, removed 12 redundant places. [2023-09-01 01:34:26,918 INFO L231 Difference]: Finished difference. Result has 193 places, 156 transitions, 2353 flow [2023-09-01 01:34:26,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2353, PETRI_PLACES=193, PETRI_TRANSITIONS=156} [2023-09-01 01:34:26,918 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 138 predicate places. [2023-09-01 01:34:26,918 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 156 transitions, 2353 flow [2023-09-01 01:34:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:26,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:26,919 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:26,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Ended with exit code 0 [2023-09-01 01:34:27,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:27,119 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:27,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1401360127, now seen corresponding path program 5 times [2023-09-01 01:34:27,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:27,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780736678] [2023-09-01 01:34:27,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:34:27,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:27,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:27,122 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:27,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-09-01 01:34:27,566 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:34:27,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:27,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:34:27,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:27,867 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:34:27,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:34:27,877 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:34:27,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:34:27,969 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:27,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:34:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:28,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:28,019 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:28,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780736678] [2023-09-01 01:34:28,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780736678] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:28,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:28,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962466815] [2023-09-01 01:34:28,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:28,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:28,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:29,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:34:29,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 156 transitions, 2353 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:29,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:29,425 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:34:29,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:31,606 INFO L130 PetriNetUnfolder]: 2964/5273 cut-off events. [2023-09-01 01:34:31,607 INFO L131 PetriNetUnfolder]: For 27870/27870 co-relation queries the response was YES. [2023-09-01 01:34:31,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23756 conditions, 5273 events. 2964/5273 cut-off events. For 27870/27870 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 31585 event pairs, 1549 based on Foata normal form. 3/5276 useless extension candidates. Maximal degree in co-relation 23686. Up to 3061 conditions per place. [2023-09-01 01:34:31,650 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 154 selfloop transitions, 65 changer transitions 10/229 dead transitions. [2023-09-01 01:34:31,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 229 transitions, 3352 flow [2023-09-01 01:34:31,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:34:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:34:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2273 transitions. [2023-09-01 01:34:31,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39793417366946776 [2023-09-01 01:34:31,653 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2273 transitions. [2023-09-01 01:34:31,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2273 transitions. [2023-09-01 01:34:31,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:31,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2273 transitions. [2023-09-01 01:34:31,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 189.41666666666666) internal successors, (2273), 12 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:31,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:31,659 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:31,659 INFO L175 Difference]: Start difference. First operand has 193 places, 156 transitions, 2353 flow. Second operand 12 states and 2273 transitions. [2023-09-01 01:34:31,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 229 transitions, 3352 flow [2023-09-01 01:34:31,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 229 transitions, 3266 flow, removed 12 selfloop flow, removed 6 redundant places. [2023-09-01 01:34:31,742 INFO L231 Difference]: Finished difference. Result has 199 places, 159 transitions, 2514 flow [2023-09-01 01:34:31,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2514, PETRI_PLACES=199, PETRI_TRANSITIONS=159} [2023-09-01 01:34:31,743 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 144 predicate places. [2023-09-01 01:34:31,743 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 159 transitions, 2514 flow [2023-09-01 01:34:31,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:31,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:31,743 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:31,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Ended with exit code 0 [2023-09-01 01:34:31,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:31,944 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:31,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:31,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1476652181, now seen corresponding path program 6 times [2023-09-01 01:34:31,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:31,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [678908923] [2023-09-01 01:34:31,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:34:31,945 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:31,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:31,945 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:31,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2023-09-01 01:34:32,219 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:34:32,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:32,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:34:32,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:32,496 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:34:32,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:34:32,507 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:34:32,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:34:32,584 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:32,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:34:32,633 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:32,633 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:32,633 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:32,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [678908923] [2023-09-01 01:34:32,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [678908923] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:32,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:32,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:32,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967530013] [2023-09-01 01:34:32,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:32,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:32,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:32,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:32,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:34,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:34:34,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 159 transitions, 2514 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:34,418 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:34,418 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:34:34,418 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:36,347 INFO L130 PetriNetUnfolder]: 2961/5268 cut-off events. [2023-09-01 01:34:36,347 INFO L131 PetriNetUnfolder]: For 28817/28817 co-relation queries the response was YES. [2023-09-01 01:34:36,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24265 conditions, 5268 events. 2961/5268 cut-off events. For 28817/28817 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 31481 event pairs, 1597 based on Foata normal form. 3/5271 useless extension candidates. Maximal degree in co-relation 24193. Up to 3061 conditions per place. [2023-09-01 01:34:36,396 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 142 selfloop transitions, 70 changer transitions 10/222 dead transitions. [2023-09-01 01:34:36,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 222 transitions, 3304 flow [2023-09-01 01:34:36,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:34:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:34:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2463 transitions. [2023-09-01 01:34:36,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980284421460892 [2023-09-01 01:34:36,399 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2463 transitions. [2023-09-01 01:34:36,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2463 transitions. [2023-09-01 01:34:36,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:36,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2463 transitions. [2023-09-01 01:34:36,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 189.46153846153845) internal successors, (2463), 13 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:36,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:36,407 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:36,407 INFO L175 Difference]: Start difference. First operand has 199 places, 159 transitions, 2514 flow. Second operand 13 states and 2463 transitions. [2023-09-01 01:34:36,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 222 transitions, 3304 flow [2023-09-01 01:34:36,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 222 transitions, 3162 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-09-01 01:34:36,545 INFO L231 Difference]: Finished difference. Result has 202 places, 159 transitions, 2529 flow [2023-09-01 01:34:36,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2384, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2529, PETRI_PLACES=202, PETRI_TRANSITIONS=159} [2023-09-01 01:34:36,546 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 147 predicate places. [2023-09-01 01:34:36,546 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 159 transitions, 2529 flow [2023-09-01 01:34:36,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:36,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:36,547 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:36,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Ended with exit code 0 [2023-09-01 01:34:36,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:36,747 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:36,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:36,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1785076425, now seen corresponding path program 7 times [2023-09-01 01:34:36,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:36,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722953449] [2023-09-01 01:34:36,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:34:36,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:36,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:36,749 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:36,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2023-09-01 01:34:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:34:37,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:34:37,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:37,676 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:37,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:34:37,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:37,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:37,733 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:37,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:37,733 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722953449] [2023-09-01 01:34:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722953449] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:37,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:37,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:37,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730441431] [2023-09-01 01:34:37,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:37,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:37,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:37,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:37,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:39,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:34:39,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 159 transitions, 2529 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:39,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:39,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:34:39,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:42,457 INFO L130 PetriNetUnfolder]: 3006/5347 cut-off events. [2023-09-01 01:34:42,457 INFO L131 PetriNetUnfolder]: For 30587/30587 co-relation queries the response was YES. [2023-09-01 01:34:42,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24680 conditions, 5347 events. 3006/5347 cut-off events. For 30587/30587 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 32203 event pairs, 1565 based on Foata normal form. 5/5352 useless extension candidates. Maximal degree in co-relation 24607. Up to 3081 conditions per place. [2023-09-01 01:34:42,510 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 170 selfloop transitions, 72 changer transitions 5/247 dead transitions. [2023-09-01 01:34:42,511 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 247 transitions, 3589 flow [2023-09-01 01:34:42,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:34:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:34:42,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2474 transitions. [2023-09-01 01:34:42,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39980607627666453 [2023-09-01 01:34:42,514 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2474 transitions. [2023-09-01 01:34:42,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2474 transitions. [2023-09-01 01:34:42,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:42,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2474 transitions. [2023-09-01 01:34:42,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 190.30769230769232) internal successors, (2474), 13 states have internal predecessors, (2474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:42,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:42,519 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:42,519 INFO L175 Difference]: Start difference. First operand has 202 places, 159 transitions, 2529 flow. Second operand 13 states and 2474 transitions. [2023-09-01 01:34:42,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 247 transitions, 3589 flow [2023-09-01 01:34:42,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 247 transitions, 3456 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-09-01 01:34:42,623 INFO L231 Difference]: Finished difference. Result has 204 places, 166 transitions, 2678 flow [2023-09-01 01:34:42,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2412, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2678, PETRI_PLACES=204, PETRI_TRANSITIONS=166} [2023-09-01 01:34:42,624 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 149 predicate places. [2023-09-01 01:34:42,624 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 166 transitions, 2678 flow [2023-09-01 01:34:42,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:42,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:42,624 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:42,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (66)] Ended with exit code 0 [2023-09-01 01:34:42,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:42,834 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:42,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:42,834 INFO L85 PathProgramCache]: Analyzing trace with hash -538323075, now seen corresponding path program 8 times [2023-09-01 01:34:42,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:42,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994590902] [2023-09-01 01:34:42,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:34:42,834 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:42,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:42,835 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:42,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2023-09-01 01:34:43,115 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:34:43,115 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:43,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:34:43,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:43,530 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:43,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:34:43,539 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:43,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:43,628 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:43,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:43,629 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:43,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994590902] [2023-09-01 01:34:43,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994590902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:43,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:43,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:43,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142272889] [2023-09-01 01:34:43,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:43,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:43,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:43,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:43,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:45,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:34:45,633 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 166 transitions, 2678 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:45,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:45,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:34:45,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:48,374 INFO L130 PetriNetUnfolder]: 3001/5336 cut-off events. [2023-09-01 01:34:48,374 INFO L131 PetriNetUnfolder]: For 30949/30949 co-relation queries the response was YES. [2023-09-01 01:34:48,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24946 conditions, 5336 events. 3001/5336 cut-off events. For 30949/30949 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 32278 event pairs, 1579 based on Foata normal form. 3/5339 useless extension candidates. Maximal degree in co-relation 24872. Up to 3081 conditions per place. [2023-09-01 01:34:48,426 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 170 selfloop transitions, 73 changer transitions 10/253 dead transitions. [2023-09-01 01:34:48,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 253 transitions, 3664 flow [2023-09-01 01:34:48,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 01:34:48,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 01:34:48,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2649 transitions. [2023-09-01 01:34:48,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3975090036014406 [2023-09-01 01:34:48,429 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2649 transitions. [2023-09-01 01:34:48,429 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2649 transitions. [2023-09-01 01:34:48,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:48,430 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2649 transitions. [2023-09-01 01:34:48,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 189.21428571428572) internal successors, (2649), 14 states have internal predecessors, (2649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:48,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:48,434 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:48,434 INFO L175 Difference]: Start difference. First operand has 204 places, 166 transitions, 2678 flow. Second operand 14 states and 2649 transitions. [2023-09-01 01:34:48,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 253 transitions, 3664 flow [2023-09-01 01:34:48,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 253 transitions, 3552 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-09-01 01:34:48,536 INFO L231 Difference]: Finished difference. Result has 212 places, 167 transitions, 2730 flow [2023-09-01 01:34:48,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2550, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2730, PETRI_PLACES=212, PETRI_TRANSITIONS=167} [2023-09-01 01:34:48,537 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2023-09-01 01:34:48,537 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 167 transitions, 2730 flow [2023-09-01 01:34:48,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:48,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:48,538 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:48,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (67)] Ended with exit code 0 [2023-09-01 01:34:48,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:48,748 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:48,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1092935883, now seen corresponding path program 9 times [2023-09-01 01:34:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:48,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1270525881] [2023-09-01 01:34:48,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:34:48,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:48,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:48,750 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:48,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2023-09-01 01:34:49,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:34:49,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:49,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:34:49,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:49,512 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:49,512 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:34:49,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:49,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:49,571 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:49,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:49,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1270525881] [2023-09-01 01:34:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1270525881] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:49,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:49,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140035618] [2023-09-01 01:34:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:49,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:51,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:34:51,900 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 167 transitions, 2730 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:51,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:51,901 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:34:51,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:34:54,533 INFO L130 PetriNetUnfolder]: 3031/5386 cut-off events. [2023-09-01 01:34:54,533 INFO L131 PetriNetUnfolder]: For 33317/33317 co-relation queries the response was YES. [2023-09-01 01:34:54,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25463 conditions, 5386 events. 3031/5386 cut-off events. For 33317/33317 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32494 event pairs, 1607 based on Foata normal form. 5/5391 useless extension candidates. Maximal degree in co-relation 25387. Up to 3143 conditions per place. [2023-09-01 01:34:54,580 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 159 selfloop transitions, 76 changer transitions 5/240 dead transitions. [2023-09-01 01:34:54,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 240 transitions, 3588 flow [2023-09-01 01:34:54,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 01:34:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 01:34:54,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2657 transitions. [2023-09-01 01:34:54,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987094837935174 [2023-09-01 01:34:54,583 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2657 transitions. [2023-09-01 01:34:54,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2657 transitions. [2023-09-01 01:34:54,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:34:54,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2657 transitions. [2023-09-01 01:34:54,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 189.78571428571428) internal successors, (2657), 14 states have internal predecessors, (2657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:54,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:54,589 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:54,589 INFO L175 Difference]: Start difference. First operand has 212 places, 167 transitions, 2730 flow. Second operand 14 states and 2657 transitions. [2023-09-01 01:34:54,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 240 transitions, 3588 flow [2023-09-01 01:34:54,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 240 transitions, 3438 flow, removed 14 selfloop flow, removed 11 redundant places. [2023-09-01 01:34:54,692 INFO L231 Difference]: Finished difference. Result has 215 places, 171 transitions, 2805 flow [2023-09-01 01:34:54,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2590, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2805, PETRI_PLACES=215, PETRI_TRANSITIONS=171} [2023-09-01 01:34:54,693 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 160 predicate places. [2023-09-01 01:34:54,693 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 171 transitions, 2805 flow [2023-09-01 01:34:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:54,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:34:54,693 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:34:54,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (68)] Ended with exit code 0 [2023-09-01 01:34:54,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:54,894 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:34:54,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:34:54,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1955278063, now seen corresponding path program 10 times [2023-09-01 01:34:54,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:34:54,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633010639] [2023-09-01 01:34:54,894 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:34:54,895 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:34:54,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:34:54,895 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:34:54,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2023-09-01 01:34:55,266 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:34:55,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:34:55,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:34:55,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:34:55,694 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:34:55,694 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:34:55,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:34:55,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:34:55,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:34:55,781 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:34:55,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:34:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633010639] [2023-09-01 01:34:55,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633010639] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:34:55,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:34:55,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:34:55,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097821416] [2023-09-01 01:34:55,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:34:55,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:34:55,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:34:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:34:55,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:34:57,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:34:57,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 171 transitions, 2805 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:34:57,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:34:57,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:34:57,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:00,415 INFO L130 PetriNetUnfolder]: 3026/5375 cut-off events. [2023-09-01 01:35:00,415 INFO L131 PetriNetUnfolder]: For 35324/35324 co-relation queries the response was YES. [2023-09-01 01:35:00,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25582 conditions, 5375 events. 3026/5375 cut-off events. For 35324/35324 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 32460 event pairs, 1607 based on Foata normal form. 3/5378 useless extension candidates. Maximal degree in co-relation 25504. Up to 3143 conditions per place. [2023-09-01 01:35:00,468 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 159 selfloop transitions, 77 changer transitions 10/246 dead transitions. [2023-09-01 01:35:00,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 246 transitions, 3651 flow [2023-09-01 01:35:00,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 01:35:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 01:35:00,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2831 transitions. [2023-09-01 01:35:00,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964985994397759 [2023-09-01 01:35:00,471 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2831 transitions. [2023-09-01 01:35:00,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2831 transitions. [2023-09-01 01:35:00,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:00,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2831 transitions. [2023-09-01 01:35:00,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 188.73333333333332) internal successors, (2831), 15 states have internal predecessors, (2831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:00,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 476.0) internal successors, (7616), 16 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:00,479 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 476.0) internal successors, (7616), 16 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:00,479 INFO L175 Difference]: Start difference. First operand has 215 places, 171 transitions, 2805 flow. Second operand 15 states and 2831 transitions. [2023-09-01 01:35:00,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 246 transitions, 3651 flow [2023-09-01 01:35:00,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 246 transitions, 3385 flow, removed 14 selfloop flow, removed 13 redundant places. [2023-09-01 01:35:00,643 INFO L231 Difference]: Finished difference. Result has 217 places, 171 transitions, 2694 flow [2023-09-01 01:35:00,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2528, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2694, PETRI_PLACES=217, PETRI_TRANSITIONS=171} [2023-09-01 01:35:00,643 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 162 predicate places. [2023-09-01 01:35:00,643 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 171 transitions, 2694 flow [2023-09-01 01:35:00,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:00,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:00,644 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:00,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2023-09-01 01:35:00,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:00,844 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:00,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash 722464705, now seen corresponding path program 11 times [2023-09-01 01:35:00,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:00,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [476337490] [2023-09-01 01:35:00,845 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:35:00,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:00,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:00,846 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:00,847 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2023-09-01 01:35:01,315 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:35:01,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:01,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:35:01,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:01,507 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:01,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:01,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:01,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:01,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:01,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:01,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:01,540 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:01,773 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:01,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:01,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:01,822 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:01,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [476337490] [2023-09-01 01:35:01,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [476337490] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:01,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:01,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:01,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559188094] [2023-09-01 01:35:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:01,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:01,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:03,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:03,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 171 transitions, 2694 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:03,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:03,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:03,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:05,585 INFO L130 PetriNetUnfolder]: 3025/5374 cut-off events. [2023-09-01 01:35:05,586 INFO L131 PetriNetUnfolder]: For 34934/34934 co-relation queries the response was YES. [2023-09-01 01:35:05,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25239 conditions, 5374 events. 3025/5374 cut-off events. For 34934/34934 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 32396 event pairs, 1749 based on Foata normal form. 3/5377 useless extension candidates. Maximal degree in co-relation 25160. Up to 3189 conditions per place. [2023-09-01 01:35:05,635 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 135 selfloop transitions, 60 changer transitions 11/206 dead transitions. [2023-09-01 01:35:05,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 206 transitions, 3270 flow [2023-09-01 01:35:05,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:35:05,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:35:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2064 transitions. [2023-09-01 01:35:05,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3941940412528648 [2023-09-01 01:35:05,638 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2064 transitions. [2023-09-01 01:35:05,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2064 transitions. [2023-09-01 01:35:05,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:05,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2064 transitions. [2023-09-01 01:35:05,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 187.63636363636363) internal successors, (2064), 11 states have internal predecessors, (2064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:05,642 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:05,642 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:05,642 INFO L175 Difference]: Start difference. First operand has 217 places, 171 transitions, 2694 flow. Second operand 11 states and 2064 transitions. [2023-09-01 01:35:05,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 206 transitions, 3270 flow [2023-09-01 01:35:05,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 206 transitions, 3081 flow, removed 9 selfloop flow, removed 15 redundant places. [2023-09-01 01:35:05,740 INFO L231 Difference]: Finished difference. Result has 212 places, 171 transitions, 2641 flow [2023-09-01 01:35:05,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2511, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2641, PETRI_PLACES=212, PETRI_TRANSITIONS=171} [2023-09-01 01:35:05,741 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 157 predicate places. [2023-09-01 01:35:05,741 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 171 transitions, 2641 flow [2023-09-01 01:35:05,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:05,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:05,741 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:05,751 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (70)] Ended with exit code 0 [2023-09-01 01:35:05,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:05,945 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:05,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:05,945 INFO L85 PathProgramCache]: Analyzing trace with hash -806045179, now seen corresponding path program 12 times [2023-09-01 01:35:05,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:05,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367284865] [2023-09-01 01:35:05,946 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:35:05,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:05,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:05,947 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:05,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2023-09-01 01:35:06,232 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:35:06,233 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:06,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:35:06,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:06,631 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:06,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:35:06,639 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:35:06,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:35:06,714 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:06,715 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:06,715 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:06,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367284865] [2023-09-01 01:35:06,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367284865] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:06,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:06,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:06,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847360462] [2023-09-01 01:35:06,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:06,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:06,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:06,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:06,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:08,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:08,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 171 transitions, 2641 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:08,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:08,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:08,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:11,359 INFO L130 PetriNetUnfolder]: 3081/5486 cut-off events. [2023-09-01 01:35:11,359 INFO L131 PetriNetUnfolder]: For 36444/36444 co-relation queries the response was YES. [2023-09-01 01:35:11,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25842 conditions, 5486 events. 3081/5486 cut-off events. For 36444/36444 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 33481 event pairs, 1733 based on Foata normal form. 3/5489 useless extension candidates. Maximal degree in co-relation 25762. Up to 3213 conditions per place. [2023-09-01 01:35:11,416 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 164 selfloop transitions, 72 changer transitions 6/242 dead transitions. [2023-09-01 01:35:11,416 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 242 transitions, 3577 flow [2023-09-01 01:35:11,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:35:11,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:35:11,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2463 transitions. [2023-09-01 01:35:11,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980284421460892 [2023-09-01 01:35:11,419 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2463 transitions. [2023-09-01 01:35:11,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2463 transitions. [2023-09-01 01:35:11,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:11,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2463 transitions. [2023-09-01 01:35:11,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 189.46153846153845) internal successors, (2463), 13 states have internal predecessors, (2463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:11,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:11,424 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:11,425 INFO L175 Difference]: Start difference. First operand has 212 places, 171 transitions, 2641 flow. Second operand 13 states and 2463 transitions. [2023-09-01 01:35:11,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 242 transitions, 3577 flow [2023-09-01 01:35:11,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 242 transitions, 3425 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-09-01 01:35:11,539 INFO L231 Difference]: Finished difference. Result has 216 places, 183 transitions, 2875 flow [2023-09-01 01:35:11,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2515, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2875, PETRI_PLACES=216, PETRI_TRANSITIONS=183} [2023-09-01 01:35:11,540 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 161 predicate places. [2023-09-01 01:35:11,540 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 183 transitions, 2875 flow [2023-09-01 01:35:11,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:11,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:11,540 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:11,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (71)] Ended with exit code 0 [2023-09-01 01:35:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:11,745 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:11,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1464541427, now seen corresponding path program 13 times [2023-09-01 01:35:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693076844] [2023-09-01 01:35:11,745 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:35:11,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:11,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:11,747 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:11,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2023-09-01 01:35:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:35:12,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:35:12,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:12,360 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-09-01 01:35:12,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:12,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:12,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:12,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:12,535 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:12,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:12,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:12,585 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:12,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [693076844] [2023-09-01 01:35:12,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [693076844] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:12,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:12,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:12,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221083967] [2023-09-01 01:35:12,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:12,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:12,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:12,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:12,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:14,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:14,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 183 transitions, 2875 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:14,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:14,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:14,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:16,944 INFO L130 PetriNetUnfolder]: 3081/5490 cut-off events. [2023-09-01 01:35:16,944 INFO L131 PetriNetUnfolder]: For 38267/38267 co-relation queries the response was YES. [2023-09-01 01:35:16,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26222 conditions, 5490 events. 3081/5490 cut-off events. For 38267/38267 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 33462 event pairs, 1758 based on Foata normal form. 3/5493 useless extension candidates. Maximal degree in co-relation 26140. Up to 3278 conditions per place. [2023-09-01 01:35:17,000 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 150 selfloop transitions, 66 changer transitions 10/226 dead transitions. [2023-09-01 01:35:17,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 226 transitions, 3536 flow [2023-09-01 01:35:17,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:35:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:35:17,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2442 transitions. [2023-09-01 01:35:17,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39463477698771815 [2023-09-01 01:35:17,003 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2442 transitions. [2023-09-01 01:35:17,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2442 transitions. [2023-09-01 01:35:17,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:17,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2442 transitions. [2023-09-01 01:35:17,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 187.84615384615384) internal successors, (2442), 13 states have internal predecessors, (2442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:17,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:17,007 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:17,007 INFO L175 Difference]: Start difference. First operand has 216 places, 183 transitions, 2875 flow. Second operand 13 states and 2442 transitions. [2023-09-01 01:35:17,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 226 transitions, 3536 flow [2023-09-01 01:35:17,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 226 transitions, 3446 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-09-01 01:35:17,128 INFO L231 Difference]: Finished difference. Result has 227 places, 183 transitions, 2931 flow [2023-09-01 01:35:17,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2931, PETRI_PLACES=227, PETRI_TRANSITIONS=183} [2023-09-01 01:35:17,129 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 172 predicate places. [2023-09-01 01:35:17,129 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 183 transitions, 2931 flow [2023-09-01 01:35:17,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:17,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:17,129 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:17,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (72)] Ended with exit code 0 [2023-09-01 01:35:17,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:17,331 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:17,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:17,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1669082231, now seen corresponding path program 14 times [2023-09-01 01:35:17,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:17,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658292962] [2023-09-01 01:35:17,332 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:35:17,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:17,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:17,333 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:17,334 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2023-09-01 01:35:17,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:35:17,659 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:17,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:35:17,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:17,958 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:35:17,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:35:17,969 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:35:17,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:35:18,047 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:18,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:18,096 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:18,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:18,096 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:18,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658292962] [2023-09-01 01:35:18,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658292962] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:18,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:18,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:18,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583226139] [2023-09-01 01:35:18,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:18,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:18,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:18,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:18,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:19,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:35:19,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 183 transitions, 2931 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:19,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:19,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:35:19,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:21,912 INFO L130 PetriNetUnfolder]: 3068/5451 cut-off events. [2023-09-01 01:35:21,913 INFO L131 PetriNetUnfolder]: For 39453/39453 co-relation queries the response was YES. [2023-09-01 01:35:21,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26251 conditions, 5451 events. 3068/5451 cut-off events. For 39453/39453 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 33101 event pairs, 1755 based on Foata normal form. 3/5454 useless extension candidates. Maximal degree in co-relation 26167. Up to 3255 conditions per place. [2023-09-01 01:35:21,970 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 146 selfloop transitions, 63 changer transitions 10/219 dead transitions. [2023-09-01 01:35:21,970 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 219 transitions, 3502 flow [2023-09-01 01:35:21,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:35:21,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:35:21,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2267 transitions. [2023-09-01 01:35:21,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39688375350140054 [2023-09-01 01:35:21,972 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2267 transitions. [2023-09-01 01:35:21,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2267 transitions. [2023-09-01 01:35:21,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:21,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2267 transitions. [2023-09-01 01:35:21,974 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.91666666666666) internal successors, (2267), 12 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:21,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:21,977 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:21,977 INFO L175 Difference]: Start difference. First operand has 227 places, 183 transitions, 2931 flow. Second operand 12 states and 2267 transitions. [2023-09-01 01:35:21,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 219 transitions, 3502 flow [2023-09-01 01:35:22,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 219 transitions, 3380 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-09-01 01:35:22,181 INFO L231 Difference]: Finished difference. Result has 226 places, 180 transitions, 2885 flow [2023-09-01 01:35:22,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2885, PETRI_PLACES=226, PETRI_TRANSITIONS=180} [2023-09-01 01:35:22,181 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2023-09-01 01:35:22,181 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 180 transitions, 2885 flow [2023-09-01 01:35:22,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:22,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:22,182 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:22,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (73)] Ended with exit code 0 [2023-09-01 01:35:22,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:22,382 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:22,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:22,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2052798529, now seen corresponding path program 15 times [2023-09-01 01:35:22,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:22,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027743067] [2023-09-01 01:35:22,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:35:22,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:22,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:22,384 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:22,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2023-09-01 01:35:22,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:35:22,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:22,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:35:22,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:23,156 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:23,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:35:23,161 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:35:23,166 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:35:23,207 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:23,207 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:23,207 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:23,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027743067] [2023-09-01 01:35:23,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027743067] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:23,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:23,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:23,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137749822] [2023-09-01 01:35:23,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:23,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:23,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:23,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:23,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:25,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:35:25,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 180 transitions, 2885 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:25,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:25,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:35:25,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:27,841 INFO L130 PetriNetUnfolder]: 3060/5431 cut-off events. [2023-09-01 01:35:27,842 INFO L131 PetriNetUnfolder]: For 40212/40212 co-relation queries the response was YES. [2023-09-01 01:35:27,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26251 conditions, 5431 events. 3060/5431 cut-off events. For 40212/40212 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 32782 event pairs, 1769 based on Foata normal form. 5/5436 useless extension candidates. Maximal degree in co-relation 26169. Up to 3209 conditions per place. [2023-09-01 01:35:27,884 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 144 selfloop transitions, 68 changer transitions 10/222 dead transitions. [2023-09-01 01:35:27,884 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 222 transitions, 3495 flow [2023-09-01 01:35:27,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:35:27,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:35:27,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2274 transitions. [2023-09-01 01:35:27,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39810924369747897 [2023-09-01 01:35:27,887 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2274 transitions. [2023-09-01 01:35:27,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2274 transitions. [2023-09-01 01:35:27,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:27,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2274 transitions. [2023-09-01 01:35:27,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 189.5) internal successors, (2274), 12 states have internal predecessors, (2274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:27,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:27,891 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:27,891 INFO L175 Difference]: Start difference. First operand has 226 places, 180 transitions, 2885 flow. Second operand 12 states and 2274 transitions. [2023-09-01 01:35:27,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 222 transitions, 3495 flow [2023-09-01 01:35:27,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 222 transitions, 3303 flow, removed 8 selfloop flow, removed 12 redundant places. [2023-09-01 01:35:27,994 INFO L231 Difference]: Finished difference. Result has 223 places, 179 transitions, 2827 flow [2023-09-01 01:35:27,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2699, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2827, PETRI_PLACES=223, PETRI_TRANSITIONS=179} [2023-09-01 01:35:27,994 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 168 predicate places. [2023-09-01 01:35:27,994 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 179 transitions, 2827 flow [2023-09-01 01:35:27,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:27,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:27,995 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:28,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2023-09-01 01:35:28,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:28,195 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:28,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1473128389, now seen corresponding path program 16 times [2023-09-01 01:35:28,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:28,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [173849077] [2023-09-01 01:35:28,196 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:35:28,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:28,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:28,197 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:28,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2023-09-01 01:35:28,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:35:28,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:28,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:35:28,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:29,013 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:29,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:35:29,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:35:29,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:35:29,102 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:29,103 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:29,103 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:29,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [173849077] [2023-09-01 01:35:29,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [173849077] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:29,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:29,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:29,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546256719] [2023-09-01 01:35:29,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:29,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:29,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:29,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:29,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:31,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:31,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 179 transitions, 2827 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:31,223 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:31,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:31,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:33,535 INFO L130 PetriNetUnfolder]: 3099/5512 cut-off events. [2023-09-01 01:35:33,535 INFO L131 PetriNetUnfolder]: For 39561/39561 co-relation queries the response was YES. [2023-09-01 01:35:33,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26528 conditions, 5512 events. 3099/5512 cut-off events. For 39561/39561 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33527 event pairs, 1831 based on Foata normal form. 3/5515 useless extension candidates. Maximal degree in co-relation 26447. Up to 3275 conditions per place. [2023-09-01 01:35:33,583 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 182 selfloop transitions, 61 changer transitions 5/248 dead transitions. [2023-09-01 01:35:33,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 248 transitions, 3719 flow [2023-09-01 01:35:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:35:33,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:35:33,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2465 transitions. [2023-09-01 01:35:33,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3983516483516483 [2023-09-01 01:35:33,585 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2465 transitions. [2023-09-01 01:35:33,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2465 transitions. [2023-09-01 01:35:33,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:33,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2465 transitions. [2023-09-01 01:35:33,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 189.6153846153846) internal successors, (2465), 13 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:33,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:33,590 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:33,590 INFO L175 Difference]: Start difference. First operand has 223 places, 179 transitions, 2827 flow. Second operand 13 states and 2465 transitions. [2023-09-01 01:35:33,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 248 transitions, 3719 flow [2023-09-01 01:35:33,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 248 transitions, 3566 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-09-01 01:35:33,693 INFO L231 Difference]: Finished difference. Result has 226 places, 189 transitions, 2995 flow [2023-09-01 01:35:33,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2995, PETRI_PLACES=226, PETRI_TRANSITIONS=189} [2023-09-01 01:35:33,694 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 171 predicate places. [2023-09-01 01:35:33,694 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 189 transitions, 2995 flow [2023-09-01 01:35:33,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:33,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:33,694 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:33,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (75)] Ended with exit code 0 [2023-09-01 01:35:33,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:33,897 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:33,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:33,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1293329023, now seen corresponding path program 17 times [2023-09-01 01:35:33,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:33,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900174136] [2023-09-01 01:35:33,898 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:35:33,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:33,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:33,898 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:33,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2023-09-01 01:35:34,402 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:35:34,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:34,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:35:34,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:34,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:34,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:34,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:34,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:34,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:34,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:34,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:34,632 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:34,861 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:34,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:34,909 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:34,909 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:34,909 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:34,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900174136] [2023-09-01 01:35:34,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900174136] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:34,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:34,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:34,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346423181] [2023-09-01 01:35:34,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:34,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:34,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:34,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:34,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:37,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:37,188 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 189 transitions, 2995 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:37,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:37,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:37,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:39,384 INFO L130 PetriNetUnfolder]: 3100/5519 cut-off events. [2023-09-01 01:35:39,385 INFO L131 PetriNetUnfolder]: For 40686/40686 co-relation queries the response was YES. [2023-09-01 01:35:39,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26880 conditions, 5519 events. 3100/5519 cut-off events. For 40686/40686 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33519 event pairs, 1858 based on Foata normal form. 3/5522 useless extension candidates. Maximal degree in co-relation 26796. Up to 3340 conditions per place. [2023-09-01 01:35:39,436 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 160 selfloop transitions, 53 changer transitions 11/224 dead transitions. [2023-09-01 01:35:39,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 224 transitions, 3630 flow [2023-09-01 01:35:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:35:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:35:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2068 transitions. [2023-09-01 01:35:39,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3949579831932773 [2023-09-01 01:35:39,439 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2068 transitions. [2023-09-01 01:35:39,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2068 transitions. [2023-09-01 01:35:39,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:39,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2068 transitions. [2023-09-01 01:35:39,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 188.0) internal successors, (2068), 11 states have internal predecessors, (2068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:39,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:39,442 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:39,442 INFO L175 Difference]: Start difference. First operand has 226 places, 189 transitions, 2995 flow. Second operand 11 states and 2068 transitions. [2023-09-01 01:35:39,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 224 transitions, 3630 flow [2023-09-01 01:35:39,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 224 transitions, 3497 flow, removed 39 selfloop flow, removed 6 redundant places. [2023-09-01 01:35:39,558 INFO L231 Difference]: Finished difference. Result has 233 places, 189 transitions, 2993 flow [2023-09-01 01:35:39,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2877, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2993, PETRI_PLACES=233, PETRI_TRANSITIONS=189} [2023-09-01 01:35:39,558 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 178 predicate places. [2023-09-01 01:35:39,558 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 189 transitions, 2993 flow [2023-09-01 01:35:39,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:39,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:39,559 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:39,568 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (76)] Ended with exit code 0 [2023-09-01 01:35:39,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:39,759 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:39,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:39,760 INFO L85 PathProgramCache]: Analyzing trace with hash 396385215, now seen corresponding path program 18 times [2023-09-01 01:35:39,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:39,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658642856] [2023-09-01 01:35:39,760 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:35:39,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:39,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:39,761 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:39,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2023-09-01 01:35:40,051 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:35:40,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:40,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:35:40,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:40,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:40,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:40,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:40,198 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:40,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:40,214 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:40,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:40,224 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:40,560 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:40,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:40,613 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:40,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:40,613 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:40,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658642856] [2023-09-01 01:35:40,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658642856] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:40,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:40,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:40,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140459913] [2023-09-01 01:35:40,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:40,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:40,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:40,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:42,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:42,904 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 189 transitions, 2993 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:42,904 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:42,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:42,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:44,946 INFO L130 PetriNetUnfolder]: 3096/5511 cut-off events. [2023-09-01 01:35:44,946 INFO L131 PetriNetUnfolder]: For 40627/40627 co-relation queries the response was YES. [2023-09-01 01:35:44,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26827 conditions, 5511 events. 3096/5511 cut-off events. For 40627/40627 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33463 event pairs, 1852 based on Foata normal form. 3/5514 useless extension candidates. Maximal degree in co-relation 26740. Up to 3340 conditions per place. [2023-09-01 01:35:45,003 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 165 selfloop transitions, 51 changer transitions 13/229 dead transitions. [2023-09-01 01:35:45,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 229 transitions, 3650 flow [2023-09-01 01:35:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:35:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:35:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2069 transitions. [2023-09-01 01:35:45,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39514896867838045 [2023-09-01 01:35:45,005 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2069 transitions. [2023-09-01 01:35:45,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2069 transitions. [2023-09-01 01:35:45,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:45,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2069 transitions. [2023-09-01 01:35:45,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 188.0909090909091) internal successors, (2069), 11 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:45,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:45,009 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:45,009 INFO L175 Difference]: Start difference. First operand has 233 places, 189 transitions, 2993 flow. Second operand 11 states and 2069 transitions. [2023-09-01 01:35:45,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 229 transitions, 3650 flow [2023-09-01 01:35:45,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 229 transitions, 3524 flow, removed 10 selfloop flow, removed 9 redundant places. [2023-09-01 01:35:45,126 INFO L231 Difference]: Finished difference. Result has 234 places, 187 transitions, 2938 flow [2023-09-01 01:35:45,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2881, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2938, PETRI_PLACES=234, PETRI_TRANSITIONS=187} [2023-09-01 01:35:45,126 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2023-09-01 01:35:45,126 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 187 transitions, 2938 flow [2023-09-01 01:35:45,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:45,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:45,127 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:45,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (77)] Ended with exit code 0 [2023-09-01 01:35:45,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:45,327 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:45,328 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:45,328 INFO L85 PathProgramCache]: Analyzing trace with hash 610091337, now seen corresponding path program 19 times [2023-09-01 01:35:45,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:45,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211692368] [2023-09-01 01:35:45,328 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:35:45,328 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:45,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:45,329 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:45,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2023-09-01 01:35:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:35:45,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:35:45,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:46,000 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:35:46,000 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:35:46,011 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:35:46,011 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:35:46,089 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:46,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:46,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:46,134 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211692368] [2023-09-01 01:35:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211692368] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:46,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584069856] [2023-09-01 01:35:46,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:46,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:46,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:46,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:46,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:47,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:35:47,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 187 transitions, 2938 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:47,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:47,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:35:47,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:49,723 INFO L130 PetriNetUnfolder]: 3092/5503 cut-off events. [2023-09-01 01:35:49,723 INFO L131 PetriNetUnfolder]: For 40546/40546 co-relation queries the response was YES. [2023-09-01 01:35:49,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26786 conditions, 5503 events. 3092/5503 cut-off events. For 40546/40546 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 33349 event pairs, 1858 based on Foata normal form. 3/5506 useless extension candidates. Maximal degree in co-relation 26698. Up to 3340 conditions per place. [2023-09-01 01:35:49,781 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 164 selfloop transitions, 52 changer transitions 10/226 dead transitions. [2023-09-01 01:35:49,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 226 transitions, 3586 flow [2023-09-01 01:35:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:35:49,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:35:49,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2270 transitions. [2023-09-01 01:35:49,784 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39740896358543415 [2023-09-01 01:35:49,784 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2270 transitions. [2023-09-01 01:35:49,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2270 transitions. [2023-09-01 01:35:49,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:49,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2270 transitions. [2023-09-01 01:35:49,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 189.16666666666666) internal successors, (2270), 12 states have internal predecessors, (2270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:49,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:49,788 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:49,788 INFO L175 Difference]: Start difference. First operand has 234 places, 187 transitions, 2938 flow. Second operand 12 states and 2270 transitions. [2023-09-01 01:35:49,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 226 transitions, 3586 flow [2023-09-01 01:35:49,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 226 transitions, 3460 flow, removed 10 selfloop flow, removed 10 redundant places. [2023-09-01 01:35:49,899 INFO L231 Difference]: Finished difference. Result has 232 places, 187 transitions, 2940 flow [2023-09-01 01:35:49,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2940, PETRI_PLACES=232, PETRI_TRANSITIONS=187} [2023-09-01 01:35:49,899 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 177 predicate places. [2023-09-01 01:35:49,899 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 187 transitions, 2940 flow [2023-09-01 01:35:49,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:49,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:49,900 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:49,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2023-09-01 01:35:50,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:50,100 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:50,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:50,101 INFO L85 PathProgramCache]: Analyzing trace with hash -551252301, now seen corresponding path program 20 times [2023-09-01 01:35:50,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:50,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643619098] [2023-09-01 01:35:50,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:35:50,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:50,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:50,102 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:50,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2023-09-01 01:35:50,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:35:50,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:50,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:35:50,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:50,648 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-09-01 01:35:50,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:50,667 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:35:50,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:35:50,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:35:50,810 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:50,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:35:50,860 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:50,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:50,860 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:50,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643619098] [2023-09-01 01:35:50,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643619098] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:50,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:50,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:50,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293638339] [2023-09-01 01:35:50,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:50,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:50,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:50,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:50,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:52,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:35:52,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 187 transitions, 2940 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:52,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:52,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:35:52,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:35:55,101 INFO L130 PetriNetUnfolder]: 3080/5467 cut-off events. [2023-09-01 01:35:55,101 INFO L131 PetriNetUnfolder]: For 40123/40123 co-relation queries the response was YES. [2023-09-01 01:35:55,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26576 conditions, 5467 events. 3080/5467 cut-off events. For 40123/40123 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 33071 event pairs, 1851 based on Foata normal form. 3/5470 useless extension candidates. Maximal degree in co-relation 26490. Up to 3317 conditions per place. [2023-09-01 01:35:55,160 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 165 selfloop transitions, 50 changer transitions 12/227 dead transitions. [2023-09-01 01:35:55,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 227 transitions, 3539 flow [2023-09-01 01:35:55,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:35:55,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:35:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2441 transitions. [2023-09-01 01:35:55,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944731738849386 [2023-09-01 01:35:55,162 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2441 transitions. [2023-09-01 01:35:55,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2441 transitions. [2023-09-01 01:35:55,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:35:55,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2441 transitions. [2023-09-01 01:35:55,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 187.76923076923077) internal successors, (2441), 13 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:55,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:55,167 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:55,167 INFO L175 Difference]: Start difference. First operand has 232 places, 187 transitions, 2940 flow. Second operand 13 states and 2441 transitions. [2023-09-01 01:35:55,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 227 transitions, 3539 flow [2023-09-01 01:35:55,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 227 transitions, 3421 flow, removed 7 selfloop flow, removed 10 redundant places. [2023-09-01 01:35:55,282 INFO L231 Difference]: Finished difference. Result has 234 places, 184 transitions, 2868 flow [2023-09-01 01:35:55,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2805, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2868, PETRI_PLACES=234, PETRI_TRANSITIONS=184} [2023-09-01 01:35:55,282 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2023-09-01 01:35:55,283 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 184 transitions, 2868 flow [2023-09-01 01:35:55,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:55,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:35:55,283 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:35:55,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2023-09-01 01:35:55,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:55,485 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:35:55,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:35:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2736971, now seen corresponding path program 21 times [2023-09-01 01:35:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:35:55,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549794695] [2023-09-01 01:35:55,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:35:55,486 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:35:55,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:35:55,486 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:35:55,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2023-09-01 01:35:55,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:35:55,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:35:55,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:35:55,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:35:56,334 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:35:56,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:35:56,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:35:56,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:35:56,387 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:35:56,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:35:56,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:35:56,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549794695] [2023-09-01 01:35:56,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [549794695] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:35:56,388 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:35:56,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:35:56,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537046311] [2023-09-01 01:35:56,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:35:56,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:35:56,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:35:56,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:35:56,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:35:58,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:35:58,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 184 transitions, 2868 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:35:58,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:35:58,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:35:58,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:01,028 INFO L130 PetriNetUnfolder]: 3071/5444 cut-off events. [2023-09-01 01:36:01,028 INFO L131 PetriNetUnfolder]: For 40067/40067 co-relation queries the response was YES. [2023-09-01 01:36:01,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26418 conditions, 5444 events. 3071/5444 cut-off events. For 40067/40067 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 32736 event pairs, 1841 based on Foata normal form. 5/5449 useless extension candidates. Maximal degree in co-relation 26331. Up to 3271 conditions per place. [2023-09-01 01:36:01,086 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 161 selfloop transitions, 55 changer transitions 10/226 dead transitions. [2023-09-01 01:36:01,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 226 transitions, 3485 flow [2023-09-01 01:36:01,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:36:01,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:36:01,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2276 transitions. [2023-09-01 01:36:01,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39845938375350143 [2023-09-01 01:36:01,089 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2276 transitions. [2023-09-01 01:36:01,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2276 transitions. [2023-09-01 01:36:01,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:01,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2276 transitions. [2023-09-01 01:36:01,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 189.66666666666666) internal successors, (2276), 12 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:01,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:01,094 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:01,094 INFO L175 Difference]: Start difference. First operand has 234 places, 184 transitions, 2868 flow. Second operand 12 states and 2276 transitions. [2023-09-01 01:36:01,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 226 transitions, 3485 flow [2023-09-01 01:36:01,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 226 transitions, 3361 flow, removed 8 selfloop flow, removed 13 redundant places. [2023-09-01 01:36:01,207 INFO L231 Difference]: Finished difference. Result has 229 places, 183 transitions, 2855 flow [2023-09-01 01:36:01,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2753, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2855, PETRI_PLACES=229, PETRI_TRANSITIONS=183} [2023-09-01 01:36:01,207 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2023-09-01 01:36:01,207 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 183 transitions, 2855 flow [2023-09-01 01:36:01,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:01,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:01,208 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:01,216 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (80)] Ended with exit code 0 [2023-09-01 01:36:01,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:01,413 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:01,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:01,413 INFO L85 PathProgramCache]: Analyzing trace with hash -480492265, now seen corresponding path program 22 times [2023-09-01 01:36:01,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:01,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389143986] [2023-09-01 01:36:01,414 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:36:01,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:01,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:01,415 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:01,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2023-09-01 01:36:01,824 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:36:01,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:01,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:36:01,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:02,242 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:02,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:36:02,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:36:02,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:36:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:02,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:02,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:02,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389143986] [2023-09-01 01:36:02,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389143986] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:02,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:02,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:02,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26145007] [2023-09-01 01:36:02,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:02,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:02,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:02,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:02,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:04,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 476 [2023-09-01 01:36:04,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 183 transitions, 2855 flow. Second operand has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:04,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:04,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 476 [2023-09-01 01:36:04,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:06,730 INFO L130 PetriNetUnfolder]: 3072/5461 cut-off events. [2023-09-01 01:36:06,730 INFO L131 PetriNetUnfolder]: For 39859/39859 co-relation queries the response was YES. [2023-09-01 01:36:06,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26469 conditions, 5461 events. 3072/5461 cut-off events. For 39859/39859 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 33188 event pairs, 1957 based on Foata normal form. 3/5464 useless extension candidates. Maximal degree in co-relation 26385. Up to 4503 conditions per place. [2023-09-01 01:36:06,790 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 186 selfloop transitions, 61 changer transitions 5/252 dead transitions. [2023-09-01 01:36:06,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 252 transitions, 3797 flow [2023-09-01 01:36:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:36:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:36:06,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2457 transitions. [2023-09-01 01:36:06,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39705882352941174 [2023-09-01 01:36:06,792 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2457 transitions. [2023-09-01 01:36:06,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2457 transitions. [2023-09-01 01:36:06,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:06,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2457 transitions. [2023-09-01 01:36:06,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 189.0) internal successors, (2457), 13 states have internal predecessors, (2457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:06,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:06,797 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:06,797 INFO L175 Difference]: Start difference. First operand has 229 places, 183 transitions, 2855 flow. Second operand 13 states and 2457 transitions. [2023-09-01 01:36:06,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 252 transitions, 3797 flow [2023-09-01 01:36:06,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 252 transitions, 3669 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-09-01 01:36:06,909 INFO L231 Difference]: Finished difference. Result has 231 places, 193 transitions, 3040 flow [2023-09-01 01:36:06,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2741, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3040, PETRI_PLACES=231, PETRI_TRANSITIONS=193} [2023-09-01 01:36:06,910 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 176 predicate places. [2023-09-01 01:36:06,910 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 193 transitions, 3040 flow [2023-09-01 01:36:06,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 182.6153846153846) internal successors, (2374), 13 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:06,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:06,910 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:06,920 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (81)] Forceful destruction successful, exit code 0 [2023-09-01 01:36:07,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:07,111 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:07,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:07,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1692446975, now seen corresponding path program 23 times [2023-09-01 01:36:07,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:07,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [224879164] [2023-09-01 01:36:07,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:36:07,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:07,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:07,113 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:07,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2023-09-01 01:36:07,603 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:36:07,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:07,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:36:07,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:07,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:07,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:07,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:07,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:07,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:07,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:07,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:07,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:08,203 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:08,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:36:08,258 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:08,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:08,258 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:08,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [224879164] [2023-09-01 01:36:08,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [224879164] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:08,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:08,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:08,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875906395] [2023-09-01 01:36:08,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:08,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:08,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:08,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:10,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:36:10,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 193 transitions, 3040 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:10,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:10,585 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:36:10,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:12,968 INFO L130 PetriNetUnfolder]: 3069/5452 cut-off events. [2023-09-01 01:36:12,969 INFO L131 PetriNetUnfolder]: For 40470/40470 co-relation queries the response was YES. [2023-09-01 01:36:12,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26848 conditions, 5452 events. 3069/5452 cut-off events. For 40470/40470 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 33121 event pairs, 1939 based on Foata normal form. 3/5455 useless extension candidates. Maximal degree in co-relation 26761. Up to 4502 conditions per place. [2023-09-01 01:36:13,011 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 178 selfloop transitions, 54 changer transitions 15/247 dead transitions. [2023-09-01 01:36:13,011 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 247 transitions, 3895 flow [2023-09-01 01:36:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:36:13,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:36:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2257 transitions. [2023-09-01 01:36:13,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3951330532212885 [2023-09-01 01:36:13,014 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2257 transitions. [2023-09-01 01:36:13,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2257 transitions. [2023-09-01 01:36:13,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:13,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2257 transitions. [2023-09-01 01:36:13,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.08333333333334) internal successors, (2257), 12 states have internal predecessors, (2257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:13,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:13,019 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:13,019 INFO L175 Difference]: Start difference. First operand has 231 places, 193 transitions, 3040 flow. Second operand 12 states and 2257 transitions. [2023-09-01 01:36:13,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 247 transitions, 3895 flow [2023-09-01 01:36:13,129 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 247 transitions, 3720 flow, removed 53 selfloop flow, removed 6 redundant places. [2023-09-01 01:36:13,132 INFO L231 Difference]: Finished difference. Result has 239 places, 189 transitions, 2880 flow [2023-09-01 01:36:13,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2858, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2880, PETRI_PLACES=239, PETRI_TRANSITIONS=189} [2023-09-01 01:36:13,132 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 184 predicate places. [2023-09-01 01:36:13,132 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 189 transitions, 2880 flow [2023-09-01 01:36:13,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:13,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:13,133 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:13,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (82)] Ended with exit code 0 [2023-09-01 01:36:13,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:13,333 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:13,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:13,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1052990477, now seen corresponding path program 24 times [2023-09-01 01:36:13,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [724873383] [2023-09-01 01:36:13,334 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:36:13,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:13,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:13,335 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2023-09-01 01:36:13,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:36:13,662 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:13,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:36:13,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:13,950 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:36:13,950 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:36:13,960 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:36:13,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:36:14,042 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:14,043 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:36:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:14,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:14,094 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:14,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [724873383] [2023-09-01 01:36:14,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [724873383] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:14,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:14,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:14,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811177365] [2023-09-01 01:36:14,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:14,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:14,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:14,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:14,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:15,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:36:15,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 189 transitions, 2880 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:15,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:15,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:36:15,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:17,926 INFO L130 PetriNetUnfolder]: 3064/5441 cut-off events. [2023-09-01 01:36:17,926 INFO L131 PetriNetUnfolder]: For 41222/41222 co-relation queries the response was YES. [2023-09-01 01:36:17,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26855 conditions, 5441 events. 3064/5441 cut-off events. For 41222/41222 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 32959 event pairs, 1969 based on Foata normal form. 3/5444 useless extension candidates. Maximal degree in co-relation 26765. Up to 4503 conditions per place. [2023-09-01 01:36:17,974 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 168 selfloop transitions, 51 changer transitions 9/228 dead transitions. [2023-09-01 01:36:17,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 228 transitions, 3583 flow [2023-09-01 01:36:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:36:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:36:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2262 transitions. [2023-09-01 01:36:17,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3960084033613445 [2023-09-01 01:36:17,977 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2262 transitions. [2023-09-01 01:36:17,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2262 transitions. [2023-09-01 01:36:17,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:17,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2262 transitions. [2023-09-01 01:36:17,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.5) internal successors, (2262), 12 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:17,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:17,981 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:17,981 INFO L175 Difference]: Start difference. First operand has 239 places, 189 transitions, 2880 flow. Second operand 12 states and 2262 transitions. [2023-09-01 01:36:17,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 228 transitions, 3583 flow [2023-09-01 01:36:18,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 228 transitions, 3463 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-09-01 01:36:18,088 INFO L231 Difference]: Finished difference. Result has 235 places, 189 transitions, 2883 flow [2023-09-01 01:36:18,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2770, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2883, PETRI_PLACES=235, PETRI_TRANSITIONS=189} [2023-09-01 01:36:18,088 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 180 predicate places. [2023-09-01 01:36:18,089 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 189 transitions, 2883 flow [2023-09-01 01:36:18,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:18,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:18,089 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:18,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2023-09-01 01:36:18,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:18,300 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:18,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 839284355, now seen corresponding path program 25 times [2023-09-01 01:36:18,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:18,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1882526883] [2023-09-01 01:36:18,300 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:36:18,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:18,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:18,301 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:18,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2023-09-01 01:36:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:18,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:36:18,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:18,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:18,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:18,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:18,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:18,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:18,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:18,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:18,861 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:19,181 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:19,182 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:36:19,232 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:19,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:19,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:19,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1882526883] [2023-09-01 01:36:19,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1882526883] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:19,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:19,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:19,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097008064] [2023-09-01 01:36:19,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:19,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:19,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:19,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:19,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:21,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:36:21,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 189 transitions, 2883 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:21,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:21,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:36:21,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:23,814 INFO L130 PetriNetUnfolder]: 3061/5436 cut-off events. [2023-09-01 01:36:23,814 INFO L131 PetriNetUnfolder]: For 40174/40174 co-relation queries the response was YES. [2023-09-01 01:36:23,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26823 conditions, 5436 events. 3061/5436 cut-off events. For 40174/40174 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 32949 event pairs, 1967 based on Foata normal form. 3/5439 useless extension candidates. Maximal degree in co-relation 26736. Up to 4503 conditions per place. [2023-09-01 01:36:23,870 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 171 selfloop transitions, 46 changer transitions 14/231 dead transitions. [2023-09-01 01:36:23,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 242 places, 231 transitions, 3619 flow [2023-09-01 01:36:23,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:36:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:36:23,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2081 transitions. [2023-09-01 01:36:23,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39744079449961806 [2023-09-01 01:36:23,872 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2081 transitions. [2023-09-01 01:36:23,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2081 transitions. [2023-09-01 01:36:23,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:23,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2081 transitions. [2023-09-01 01:36:23,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 189.1818181818182) internal successors, (2081), 11 states have internal predecessors, (2081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:23,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:23,876 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:23,876 INFO L175 Difference]: Start difference. First operand has 235 places, 189 transitions, 2883 flow. Second operand 11 states and 2081 transitions. [2023-09-01 01:36:23,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 242 places, 231 transitions, 3619 flow [2023-09-01 01:36:23,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 231 transitions, 3499 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-09-01 01:36:23,988 INFO L231 Difference]: Finished difference. Result has 237 places, 186 transitions, 2804 flow [2023-09-01 01:36:23,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2781, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2804, PETRI_PLACES=237, PETRI_TRANSITIONS=186} [2023-09-01 01:36:23,988 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 182 predicate places. [2023-09-01 01:36:23,988 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 186 transitions, 2804 flow [2023-09-01 01:36:23,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:23,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:23,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:24,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2023-09-01 01:36:24,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:24,189 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:24,189 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:24,189 INFO L85 PathProgramCache]: Analyzing trace with hash -108353161, now seen corresponding path program 26 times [2023-09-01 01:36:24,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:24,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895294200] [2023-09-01 01:36:24,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:36:24,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:24,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:24,191 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:24,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2023-09-01 01:36:24,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:36:24,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:24,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:36:24,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:24,734 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-09-01 01:36:24,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:24,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:24,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:24,763 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:24,896 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:24,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:36:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:24,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:24,945 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:24,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895294200] [2023-09-01 01:36:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895294200] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:24,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:24,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:24,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965467183] [2023-09-01 01:36:24,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:24,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:24,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:24,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:24,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:26,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:36:26,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 186 transitions, 2804 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:26,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:26,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:36:26,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:29,075 INFO L130 PetriNetUnfolder]: 3057/5428 cut-off events. [2023-09-01 01:36:29,075 INFO L131 PetriNetUnfolder]: For 39046/39046 co-relation queries the response was YES. [2023-09-01 01:36:29,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26753 conditions, 5428 events. 3057/5428 cut-off events. For 39046/39046 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 32822 event pairs, 2003 based on Foata normal form. 3/5431 useless extension candidates. Maximal degree in co-relation 26664. Up to 4503 conditions per place. [2023-09-01 01:36:29,133 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 170 selfloop transitions, 49 changer transitions 11/230 dead transitions. [2023-09-01 01:36:29,133 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 230 transitions, 3527 flow [2023-09-01 01:36:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:36:29,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:36:29,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2447 transitions. [2023-09-01 01:36:29,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.395442792501616 [2023-09-01 01:36:29,135 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2447 transitions. [2023-09-01 01:36:29,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2447 transitions. [2023-09-01 01:36:29,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:29,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2447 transitions. [2023-09-01 01:36:29,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 188.23076923076923) internal successors, (2447), 13 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:29,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:29,142 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:29,142 INFO L175 Difference]: Start difference. First operand has 237 places, 186 transitions, 2804 flow. Second operand 13 states and 2447 transitions. [2023-09-01 01:36:29,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 230 transitions, 3527 flow [2023-09-01 01:36:29,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 230 transitions, 3395 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-09-01 01:36:29,286 INFO L231 Difference]: Finished difference. Result has 235 places, 186 transitions, 2799 flow [2023-09-01 01:36:29,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2688, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2799, PETRI_PLACES=235, PETRI_TRANSITIONS=186} [2023-09-01 01:36:29,287 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 180 predicate places. [2023-09-01 01:36:29,287 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 186 transitions, 2799 flow [2023-09-01 01:36:29,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:29,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:29,287 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:29,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (85)] Ended with exit code 0 [2023-09-01 01:36:29,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:29,488 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:29,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:29,488 INFO L85 PathProgramCache]: Analyzing trace with hash -850429883, now seen corresponding path program 27 times [2023-09-01 01:36:29,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:29,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [726553475] [2023-09-01 01:36:29,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:36:29,489 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:29,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:29,490 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:29,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2023-09-01 01:36:29,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:36:29,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:29,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 22 conjunts are in the unsatisfiable core [2023-09-01 01:36:29,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:29,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:29,999 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:30,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:30,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:30,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:30,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:36:30,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:36:30,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:36:30,242 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:30,243 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 152 treesize of output 60 [2023-09-01 01:36:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:30,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:30,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:30,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [726553475] [2023-09-01 01:36:30,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [726553475] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:30,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:30,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:30,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130737868] [2023-09-01 01:36:30,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:30,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:30,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:32,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:36:32,604 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 186 transitions, 2799 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:32,604 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:32,604 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:36:32,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:34,678 INFO L130 PetriNetUnfolder]: 3044/5389 cut-off events. [2023-09-01 01:36:34,678 INFO L131 PetriNetUnfolder]: For 39697/39697 co-relation queries the response was YES. [2023-09-01 01:36:34,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26504 conditions, 5389 events. 3044/5389 cut-off events. For 39697/39697 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 32408 event pairs, 1969 based on Foata normal form. 3/5392 useless extension candidates. Maximal degree in co-relation 26418. Up to 4503 conditions per place. [2023-09-01 01:36:34,734 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 164 selfloop transitions, 45 changer transitions 13/222 dead transitions. [2023-09-01 01:36:34,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 222 transitions, 3425 flow [2023-09-01 01:36:34,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:36:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:36:34,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2075 transitions. [2023-09-01 01:36:34,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962948815889992 [2023-09-01 01:36:34,736 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2075 transitions. [2023-09-01 01:36:34,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2075 transitions. [2023-09-01 01:36:34,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:34,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2075 transitions. [2023-09-01 01:36:34,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 188.63636363636363) internal successors, (2075), 11 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:34,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:34,740 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:34,740 INFO L175 Difference]: Start difference. First operand has 235 places, 186 transitions, 2799 flow. Second operand 11 states and 2075 transitions. [2023-09-01 01:36:34,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 222 transitions, 3425 flow [2023-09-01 01:36:34,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 222 transitions, 3308 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-09-01 01:36:34,842 INFO L231 Difference]: Finished difference. Result has 234 places, 183 transitions, 2712 flow [2023-09-01 01:36:34,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2659, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2712, PETRI_PLACES=234, PETRI_TRANSITIONS=183} [2023-09-01 01:36:34,843 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 179 predicate places. [2023-09-01 01:36:34,843 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 183 transitions, 2712 flow [2023-09-01 01:36:34,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:34,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:34,844 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:34,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (86)] Ended with exit code 0 [2023-09-01 01:36:35,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:35,044 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:35,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:35,044 INFO L85 PathProgramCache]: Analyzing trace with hash 669274179, now seen corresponding path program 28 times [2023-09-01 01:36:35,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:35,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1206681462] [2023-09-01 01:36:35,045 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:36:35,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:35,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:35,046 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:35,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2023-09-01 01:36:35,467 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:36:35,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:35,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 01:36:35,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:35,934 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:35,935 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:36:35,940 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:36:35,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:36:35,995 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:35,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:35,995 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:35,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1206681462] [2023-09-01 01:36:35,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1206681462] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:35,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:35,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-09-01 01:36:35,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961748107] [2023-09-01 01:36:35,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:35,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 01:36:35,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:35,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 01:36:35,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-09-01 01:36:38,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:36:38,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 183 transitions, 2712 flow. Second operand has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:38,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:38,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:36:38,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:40,088 INFO L130 PetriNetUnfolder]: 3035/5366 cut-off events. [2023-09-01 01:36:40,088 INFO L131 PetriNetUnfolder]: For 39143/39143 co-relation queries the response was YES. [2023-09-01 01:36:40,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26330 conditions, 5366 events. 3035/5366 cut-off events. For 39143/39143 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 32150 event pairs, 1985 based on Foata normal form. 5/5371 useless extension candidates. Maximal degree in co-relation 26245. Up to 4499 conditions per place. [2023-09-01 01:36:40,144 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 164 selfloop transitions, 51 changer transitions 10/225 dead transitions. [2023-09-01 01:36:40,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 225 transitions, 3373 flow [2023-09-01 01:36:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:36:40,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:36:40,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2267 transitions. [2023-09-01 01:36:40,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39688375350140054 [2023-09-01 01:36:40,148 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2267 transitions. [2023-09-01 01:36:40,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2267 transitions. [2023-09-01 01:36:40,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:40,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2267 transitions. [2023-09-01 01:36:40,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 188.91666666666666) internal successors, (2267), 12 states have internal predecessors, (2267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,152 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,152 INFO L175 Difference]: Start difference. First operand has 234 places, 183 transitions, 2712 flow. Second operand 12 states and 2267 transitions. [2023-09-01 01:36:40,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 225 transitions, 3373 flow [2023-09-01 01:36:40,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 225 transitions, 3251 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-09-01 01:36:40,255 INFO L231 Difference]: Finished difference. Result has 229 places, 182 transitions, 2692 flow [2023-09-01 01:36:40,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2692, PETRI_PLACES=229, PETRI_TRANSITIONS=182} [2023-09-01 01:36:40,256 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2023-09-01 01:36:40,256 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 182 transitions, 2692 flow [2023-09-01 01:36:40,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 183.6153846153846) internal successors, (2387), 13 states have internal predecessors, (2387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:40,256 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:40,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (87)] Ended with exit code 0 [2023-09-01 01:36:40,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:40,457 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:40,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1477356223, now seen corresponding path program 29 times [2023-09-01 01:36:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334774584] [2023-09-01 01:36:40,458 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:36:40,458 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:40,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:40,459 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:40,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2023-09-01 01:36:40,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:36:40,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:40,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 01:36:40,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:41,250 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:41,251 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 258 treesize of output 134 [2023-09-01 01:36:41,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:36:41,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:36:41,359 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:41,359 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:41,360 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:41,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334774584] [2023-09-01 01:36:41,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334774584] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:41,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:41,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:36:41,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671464101] [2023-09-01 01:36:41,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:41,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:36:41,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:41,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:36:41,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:36:42,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:36:42,490 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 182 transitions, 2692 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,490 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:42,490 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:36:42,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:44,536 INFO L130 PetriNetUnfolder]: 3142/5564 cut-off events. [2023-09-01 01:36:44,536 INFO L131 PetriNetUnfolder]: For 40317/40317 co-relation queries the response was YES. [2023-09-01 01:36:44,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27532 conditions, 5564 events. 3142/5564 cut-off events. For 40317/40317 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 33855 event pairs, 1733 based on Foata normal form. 1/5565 useless extension candidates. Maximal degree in co-relation 27450. Up to 3291 conditions per place. [2023-09-01 01:36:44,596 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 186 selfloop transitions, 73 changer transitions 5/264 dead transitions. [2023-09-01 01:36:44,596 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 264 transitions, 3841 flow [2023-09-01 01:36:44,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:36:44,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:36:44,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2122 transitions. [2023-09-01 01:36:44,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052711993888464 [2023-09-01 01:36:44,599 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2122 transitions. [2023-09-01 01:36:44,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2122 transitions. [2023-09-01 01:36:44,599 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:44,599 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2122 transitions. [2023-09-01 01:36:44,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 192.9090909090909) internal successors, (2122), 11 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,603 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,603 INFO L175 Difference]: Start difference. First operand has 229 places, 182 transitions, 2692 flow. Second operand 11 states and 2122 transitions. [2023-09-01 01:36:44,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 264 transitions, 3841 flow [2023-09-01 01:36:44,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 264 transitions, 3706 flow, removed 7 selfloop flow, removed 12 redundant places. [2023-09-01 01:36:44,727 INFO L231 Difference]: Finished difference. Result has 229 places, 206 transitions, 3212 flow [2023-09-01 01:36:44,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=2583, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3212, PETRI_PLACES=229, PETRI_TRANSITIONS=206} [2023-09-01 01:36:44,727 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 174 predicate places. [2023-09-01 01:36:44,728 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 206 transitions, 3212 flow [2023-09-01 01:36:44,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:44,728 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:44,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (88)] Ended with exit code 0 [2023-09-01 01:36:44,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:44,929 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:44,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:44,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1400656085, now seen corresponding path program 30 times [2023-09-01 01:36:44,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:44,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754405976] [2023-09-01 01:36:44,929 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:36:44,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:44,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:44,930 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:44,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Waiting until timeout for monitored process [2023-09-01 01:36:45,262 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:36:45,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:45,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:36:45,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:45,578 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:45,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 258 treesize of output 134 [2023-09-01 01:36:45,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:36:45,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:36:45,705 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:45,705 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:45,705 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:45,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754405976] [2023-09-01 01:36:45,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754405976] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:45,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:45,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:36:45,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013681685] [2023-09-01 01:36:45,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:45,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:36:45,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:36:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:36:46,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:36:46,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 206 transitions, 3212 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:46,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:46,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:36:46,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:49,023 INFO L130 PetriNetUnfolder]: 3203/5687 cut-off events. [2023-09-01 01:36:49,023 INFO L131 PetriNetUnfolder]: For 49911/49911 co-relation queries the response was YES. [2023-09-01 01:36:49,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29850 conditions, 5687 events. 3203/5687 cut-off events. For 49911/49911 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 34830 event pairs, 1834 based on Foata normal form. 1/5688 useless extension candidates. Maximal degree in co-relation 29763. Up to 3290 conditions per place. [2023-09-01 01:36:49,092 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 176 selfloop transitions, 93 changer transitions 5/274 dead transitions. [2023-09-01 01:36:49,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 274 transitions, 4225 flow [2023-09-01 01:36:49,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:36:49,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:36:49,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2128 transitions. [2023-09-01 01:36:49,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40641711229946526 [2023-09-01 01:36:49,095 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2128 transitions. [2023-09-01 01:36:49,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2128 transitions. [2023-09-01 01:36:49,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:49,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2128 transitions. [2023-09-01 01:36:49,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.45454545454547) internal successors, (2128), 11 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,099 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,099 INFO L175 Difference]: Start difference. First operand has 229 places, 206 transitions, 3212 flow. Second operand 11 states and 2128 transitions. [2023-09-01 01:36:49,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 274 transitions, 4225 flow [2023-09-01 01:36:49,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 274 transitions, 4110 flow, removed 40 selfloop flow, removed 3 redundant places. [2023-09-01 01:36:49,258 INFO L231 Difference]: Finished difference. Result has 240 places, 220 transitions, 3643 flow [2023-09-01 01:36:49,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3643, PETRI_PLACES=240, PETRI_TRANSITIONS=220} [2023-09-01 01:36:49,259 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 185 predicate places. [2023-09-01 01:36:49,259 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 220 transitions, 3643 flow [2023-09-01 01:36:49,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:49,259 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:49,267 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (89)] Ended with exit code 0 [2023-09-01 01:36:49,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:49,460 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:49,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:49,460 INFO L85 PathProgramCache]: Analyzing trace with hash -913564475, now seen corresponding path program 31 times [2023-09-01 01:36:49,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:49,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1015943338] [2023-09-01 01:36:49,461 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:36:49,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:49,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:49,462 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:49,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2023-09-01 01:36:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:49,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 01:36:49,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:50,241 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:50,241 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:36:50,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:36:50,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:36:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:50,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:50,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:50,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1015943338] [2023-09-01 01:36:50,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1015943338] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:50,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:50,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:36:50,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913100196] [2023-09-01 01:36:50,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:50,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:36:50,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:50,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:36:50,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:36:51,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:36:51,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 220 transitions, 3643 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:51,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:51,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:36:51,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:53,799 INFO L130 PetriNetUnfolder]: 3545/6298 cut-off events. [2023-09-01 01:36:53,799 INFO L131 PetriNetUnfolder]: For 51189/51189 co-relation queries the response was YES. [2023-09-01 01:36:53,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33130 conditions, 6298 events. 3545/6298 cut-off events. For 51189/51189 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 39787 event pairs, 1451 based on Foata normal form. 5/6303 useless extension candidates. Maximal degree in co-relation 33040. Up to 2671 conditions per place. [2023-09-01 01:36:53,875 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 190 selfloop transitions, 101 changer transitions 10/301 dead transitions. [2023-09-01 01:36:53,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 301 transitions, 4940 flow [2023-09-01 01:36:53,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:36:53,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:36:53,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1933 transitions. [2023-09-01 01:36:53,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4060924369747899 [2023-09-01 01:36:53,878 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1933 transitions. [2023-09-01 01:36:53,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1933 transitions. [2023-09-01 01:36:53,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:53,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1933 transitions. [2023-09-01 01:36:53,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 193.3) internal successors, (1933), 10 states have internal predecessors, (1933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:53,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:53,882 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:53,883 INFO L175 Difference]: Start difference. First operand has 240 places, 220 transitions, 3643 flow. Second operand 10 states and 1933 transitions. [2023-09-01 01:36:53,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 301 transitions, 4940 flow [2023-09-01 01:36:54,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 301 transitions, 4802 flow, removed 43 selfloop flow, removed 3 redundant places. [2023-09-01 01:36:54,144 INFO L231 Difference]: Finished difference. Result has 250 places, 227 transitions, 3994 flow [2023-09-01 01:36:54,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=3545, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3994, PETRI_PLACES=250, PETRI_TRANSITIONS=227} [2023-09-01 01:36:54,145 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 195 predicate places. [2023-09-01 01:36:54,145 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 227 transitions, 3994 flow [2023-09-01 01:36:54,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:54,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:54,145 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:54,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (90)] Forceful destruction successful, exit code 0 [2023-09-01 01:36:54,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:54,358 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:54,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1162299843, now seen corresponding path program 32 times [2023-09-01 01:36:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819476911] [2023-09-01 01:36:54,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:36:54,359 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:54,360 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:54,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Waiting until timeout for monitored process [2023-09-01 01:36:54,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:36:54,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:54,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:36:54,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:36:55,018 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:36:55,018 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 258 treesize of output 134 [2023-09-01 01:36:55,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:36:55,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:36:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:36:55,119 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:36:55,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:36:55,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819476911] [2023-09-01 01:36:55,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819476911] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:55,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:55,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:36:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336306088] [2023-09-01 01:36:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:36:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:36:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:36:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:36:56,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:36:56,358 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 227 transitions, 3994 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:56,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:56,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:36:56,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:58,867 INFO L130 PetriNetUnfolder]: 3538/6287 cut-off events. [2023-09-01 01:36:58,867 INFO L131 PetriNetUnfolder]: For 52445/52445 co-relation queries the response was YES. [2023-09-01 01:36:58,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33956 conditions, 6287 events. 3538/6287 cut-off events. For 52445/52445 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 39460 event pairs, 1565 based on Foata normal form. 1/6288 useless extension candidates. Maximal degree in co-relation 33862. Up to 2671 conditions per place. [2023-09-01 01:36:58,924 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 194 selfloop transitions, 114 changer transitions 5/313 dead transitions. [2023-09-01 01:36:58,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 313 transitions, 5118 flow [2023-09-01 01:36:58,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:36:58,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:36:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2326 transitions. [2023-09-01 01:36:58,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4072128851540616 [2023-09-01 01:36:58,926 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2326 transitions. [2023-09-01 01:36:58,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2326 transitions. [2023-09-01 01:36:58,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:58,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2326 transitions. [2023-09-01 01:36:58,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 193.83333333333334) internal successors, (2326), 12 states have internal predecessors, (2326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:58,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:58,930 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:58,931 INFO L175 Difference]: Start difference. First operand has 250 places, 227 transitions, 3994 flow. Second operand 12 states and 2326 transitions. [2023-09-01 01:36:58,931 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 313 transitions, 5118 flow [2023-09-01 01:36:59,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 313 transitions, 5004 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-09-01 01:36:59,122 INFO L231 Difference]: Finished difference. Result has 258 places, 237 transitions, 4444 flow [2023-09-01 01:36:59,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=3902, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4444, PETRI_PLACES=258, PETRI_TRANSITIONS=237} [2023-09-01 01:36:59,122 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 203 predicate places. [2023-09-01 01:36:59,122 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 237 transitions, 4444 flow [2023-09-01 01:36:59,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:59,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:59,123 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:59,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (91)] Forceful destruction successful, exit code 0 [2023-09-01 01:36:59,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:59,325 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:36:59,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:59,325 INFO L85 PathProgramCache]: Analyzing trace with hash -313565517, now seen corresponding path program 33 times [2023-09-01 01:36:59,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:36:59,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [299739414] [2023-09-01 01:36:59,326 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:36:59,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:36:59,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:36:59,327 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:36:59,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Waiting until timeout for monitored process [2023-09-01 01:36:59,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:36:59,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:36:59,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:36:59,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:00,130 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:37:00,131 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:37:00,138 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:37:00,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:37:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:00,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:00,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:00,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [299739414] [2023-09-01 01:37:00,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [299739414] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:00,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:00,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:37:00,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574603703] [2023-09-01 01:37:00,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:00,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:37:00,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:00,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:37:00,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:37:01,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:37:01,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 237 transitions, 4444 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:01,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:01,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:37:01,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:03,748 INFO L130 PetriNetUnfolder]: 3533/6276 cut-off events. [2023-09-01 01:37:03,748 INFO L131 PetriNetUnfolder]: For 59713/59713 co-relation queries the response was YES. [2023-09-01 01:37:03,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34626 conditions, 6276 events. 3533/6276 cut-off events. For 59713/59713 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 39573 event pairs, 1459 based on Foata normal form. 5/6281 useless extension candidates. Maximal degree in co-relation 34528. Up to 2671 conditions per place. [2023-09-01 01:37:03,813 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 182 selfloop transitions, 111 changer transitions 9/302 dead transitions. [2023-09-01 01:37:03,814 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 302 transitions, 5333 flow [2023-09-01 01:37:03,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:37:03,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:37:03,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2129 transitions. [2023-09-01 01:37:03,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40660809778456836 [2023-09-01 01:37:03,816 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2129 transitions. [2023-09-01 01:37:03,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2129 transitions. [2023-09-01 01:37:03,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:03,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2129 transitions. [2023-09-01 01:37:03,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 193.54545454545453) internal successors, (2129), 11 states have internal predecessors, (2129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:03,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:03,820 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:03,820 INFO L175 Difference]: Start difference. First operand has 258 places, 237 transitions, 4444 flow. Second operand 11 states and 2129 transitions. [2023-09-01 01:37:03,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 302 transitions, 5333 flow [2023-09-01 01:37:04,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 302 transitions, 5100 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-09-01 01:37:04,054 INFO L231 Difference]: Finished difference. Result has 265 places, 237 transitions, 4464 flow [2023-09-01 01:37:04,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4229, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4464, PETRI_PLACES=265, PETRI_TRANSITIONS=237} [2023-09-01 01:37:04,054 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 210 predicate places. [2023-09-01 01:37:04,054 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 237 transitions, 4464 flow [2023-09-01 01:37:04,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:04,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:04,055 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:04,063 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (92)] Ended with exit code 0 [2023-09-01 01:37:04,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:04,255 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:04,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:04,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1570857723, now seen corresponding path program 34 times [2023-09-01 01:37:04,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:04,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374626942] [2023-09-01 01:37:04,256 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:37:04,256 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:04,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:04,257 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:04,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2023-09-01 01:37:04,668 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:37:04,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:04,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 01:37:04,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:04,992 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:37:04,993 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:37:04,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:37:05,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:37:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:05,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:05,060 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374626942] [2023-09-01 01:37:05,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374626942] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:05,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:05,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:37:05,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915769273] [2023-09-01 01:37:05,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:37:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:37:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:37:06,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:37:06,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 237 transitions, 4464 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:06,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:37:06,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:08,664 INFO L130 PetriNetUnfolder]: 3525/6258 cut-off events. [2023-09-01 01:37:08,664 INFO L131 PetriNetUnfolder]: For 63470/63470 co-relation queries the response was YES. [2023-09-01 01:37:08,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34407 conditions, 6258 events. 3525/6258 cut-off events. For 63470/63470 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 39592 event pairs, 2036 based on Foata normal form. 5/6263 useless extension candidates. Maximal degree in co-relation 34307. Up to 3823 conditions per place. [2023-09-01 01:37:08,741 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 196 selfloop transitions, 79 changer transitions 5/280 dead transitions. [2023-09-01 01:37:08,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 280 transitions, 5226 flow [2023-09-01 01:37:08,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:37:08,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:37:08,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1923 transitions. [2023-09-01 01:37:08,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40399159663865547 [2023-09-01 01:37:08,743 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1923 transitions. [2023-09-01 01:37:08,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1923 transitions. [2023-09-01 01:37:08,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:08,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1923 transitions. [2023-09-01 01:37:08,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.3) internal successors, (1923), 10 states have internal predecessors, (1923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,747 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,747 INFO L175 Difference]: Start difference. First operand has 265 places, 237 transitions, 4464 flow. Second operand 10 states and 1923 transitions. [2023-09-01 01:37:08,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 280 transitions, 5226 flow [2023-09-01 01:37:09,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 280 transitions, 4986 flow, removed 8 selfloop flow, removed 11 redundant places. [2023-09-01 01:37:09,018 INFO L231 Difference]: Finished difference. Result has 264 places, 238 transitions, 4422 flow [2023-09-01 01:37:09,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4232, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4422, PETRI_PLACES=264, PETRI_TRANSITIONS=238} [2023-09-01 01:37:09,019 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 209 predicate places. [2023-09-01 01:37:09,019 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 238 transitions, 4422 flow [2023-09-01 01:37:09,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:09,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:09,020 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:09,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2023-09-01 01:37:09,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:09,234 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:09,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:09,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1954574021, now seen corresponding path program 35 times [2023-09-01 01:37:09,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:09,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351443347] [2023-09-01 01:37:09,234 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:37:09,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:09,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:09,235 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:09,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Waiting until timeout for monitored process [2023-09-01 01:37:09,734 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:37:09,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:09,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 01:37:09,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:09,950 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:37:09,951 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:37:09,959 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:37:09,959 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:37:10,153 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 01:37:10,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 216 treesize of output 184 [2023-09-01 01:37:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:10,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:10,294 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:10,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351443347] [2023-09-01 01:37:10,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351443347] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:10,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:10,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:37:10,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598927014] [2023-09-01 01:37:10,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:10,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:37:10,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:10,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:37:10,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:37:11,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 476 [2023-09-01 01:37:11,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 238 transitions, 4422 flow. Second operand has 11 states, 11 states have (on average 186.9090909090909) internal successors, (2056), 11 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:11,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:11,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 476 [2023-09-01 01:37:11,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:13,592 INFO L130 PetriNetUnfolder]: 3522/6249 cut-off events. [2023-09-01 01:37:13,592 INFO L131 PetriNetUnfolder]: For 62261/62261 co-relation queries the response was YES. [2023-09-01 01:37:13,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34187 conditions, 6249 events. 3522/6249 cut-off events. For 62261/62261 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 39544 event pairs, 2045 based on Foata normal form. 1/6250 useless extension candidates. Maximal degree in co-relation 34087. Up to 3917 conditions per place. [2023-09-01 01:37:13,674 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 203 selfloop transitions, 69 changer transitions 6/278 dead transitions. [2023-09-01 01:37:13,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 278 transitions, 5181 flow [2023-09-01 01:37:13,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:37:13,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:37:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1924 transitions. [2023-09-01 01:37:13,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042016806722689 [2023-09-01 01:37:13,677 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1924 transitions. [2023-09-01 01:37:13,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1924 transitions. [2023-09-01 01:37:13,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:13,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1924 transitions. [2023-09-01 01:37:13,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.4) internal successors, (1924), 10 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,680 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,680 INFO L175 Difference]: Start difference. First operand has 264 places, 238 transitions, 4422 flow. Second operand 10 states and 1924 transitions. [2023-09-01 01:37:13,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 278 transitions, 5181 flow [2023-09-01 01:37:14,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 278 transitions, 5014 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-09-01 01:37:14,022 INFO L231 Difference]: Finished difference. Result has 268 places, 240 transitions, 4455 flow [2023-09-01 01:37:14,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4269, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4455, PETRI_PLACES=268, PETRI_TRANSITIONS=240} [2023-09-01 01:37:14,023 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 213 predicate places. [2023-09-01 01:37:14,023 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 240 transitions, 4455 flow [2023-09-01 01:37:14,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 186.9090909090909) internal successors, (2056), 11 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:14,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:14,023 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:14,034 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (94)] Ended with exit code 0 [2023-09-01 01:37:14,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:14,224 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:14,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:14,224 INFO L85 PathProgramCache]: Analyzing trace with hash -623724605, now seen corresponding path program 36 times [2023-09-01 01:37:14,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:14,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1285960367] [2023-09-01 01:37:14,225 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:37:14,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:14,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:14,226 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:14,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Waiting until timeout for monitored process [2023-09-01 01:37:14,580 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:37:14,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:14,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:37:14,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:14,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:37:14,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:37:14,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:37:14,752 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:37:14,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:37:14,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-09-01 01:37:14,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:37:14,774 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-09-01 01:37:15,029 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 01:37:15,029 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 216 treesize of output 184 [2023-09-01 01:37:15,151 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:15,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:15,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:15,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1285960367] [2023-09-01 01:37:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1285960367] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:15,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:15,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:37:15,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240885205] [2023-09-01 01:37:15,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:15,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:37:15,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:15,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:37:15,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:37:16,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:37:16,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 240 transitions, 4455 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:16,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:16,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:37:16,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:19,216 INFO L130 PetriNetUnfolder]: 3531/6274 cut-off events. [2023-09-01 01:37:19,216 INFO L131 PetriNetUnfolder]: For 65583/65583 co-relation queries the response was YES. [2023-09-01 01:37:19,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34143 conditions, 6274 events. 3531/6274 cut-off events. For 65583/65583 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 39603 event pairs, 2157 based on Foata normal form. 1/6275 useless extension candidates. Maximal degree in co-relation 34041. Up to 3940 conditions per place. [2023-09-01 01:37:19,281 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 207 selfloop transitions, 75 changer transitions 5/287 dead transitions. [2023-09-01 01:37:19,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 287 transitions, 5323 flow [2023-09-01 01:37:19,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:37:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:37:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1924 transitions. [2023-09-01 01:37:19,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4042016806722689 [2023-09-01 01:37:19,284 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1924 transitions. [2023-09-01 01:37:19,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1924 transitions. [2023-09-01 01:37:19,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:19,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1924 transitions. [2023-09-01 01:37:19,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.4) internal successors, (1924), 10 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:19,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:19,287 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:19,287 INFO L175 Difference]: Start difference. First operand has 268 places, 240 transitions, 4455 flow. Second operand 10 states and 1924 transitions. [2023-09-01 01:37:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 287 transitions, 5323 flow [2023-09-01 01:37:19,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 287 transitions, 5210 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-09-01 01:37:19,497 INFO L231 Difference]: Finished difference. Result has 272 places, 246 transitions, 4653 flow [2023-09-01 01:37:19,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4358, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4653, PETRI_PLACES=272, PETRI_TRANSITIONS=246} [2023-09-01 01:37:19,497 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 217 predicate places. [2023-09-01 01:37:19,497 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 246 transitions, 4653 flow [2023-09-01 01:37:19,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:19,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:19,498 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:19,506 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (95)] Forceful destruction successful, exit code 0 [2023-09-01 01:37:19,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:19,698 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:19,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:19,699 INFO L85 PathProgramCache]: Analyzing trace with hash 537619033, now seen corresponding path program 37 times [2023-09-01 01:37:19,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:19,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1043746395] [2023-09-01 01:37:19,699 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:37:19,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:19,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:19,700 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:19,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2023-09-01 01:37:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:20,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 01:37:20,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:20,343 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:37:20,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:37:20,350 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:37:20,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:37:20,547 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 01:37:20,547 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 216 treesize of output 184 [2023-09-01 01:37:20,671 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:20,671 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:20,671 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:20,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1043746395] [2023-09-01 01:37:20,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1043746395] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:20,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:20,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:37:20,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537838435] [2023-09-01 01:37:20,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:20,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:37:20,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:20,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:37:20,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:37:21,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 476 [2023-09-01 01:37:21,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 246 transitions, 4653 flow. Second operand has 11 states, 11 states have (on average 186.9090909090909) internal successors, (2056), 11 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:21,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:21,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 476 [2023-09-01 01:37:21,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:24,019 INFO L130 PetriNetUnfolder]: 3530/6267 cut-off events. [2023-09-01 01:37:24,020 INFO L131 PetriNetUnfolder]: For 66266/66266 co-relation queries the response was YES. [2023-09-01 01:37:24,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34106 conditions, 6267 events. 3530/6267 cut-off events. For 66266/66266 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 39463 event pairs, 2172 based on Foata normal form. 1/6268 useless extension candidates. Maximal degree in co-relation 34002. Up to 3940 conditions per place. [2023-09-01 01:37:24,098 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 199 selfloop transitions, 81 changer transitions 5/285 dead transitions. [2023-09-01 01:37:24,098 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 285 transitions, 5420 flow [2023-09-01 01:37:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:37:24,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:37:24,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1930 transitions. [2023-09-01 01:37:24,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4054621848739496 [2023-09-01 01:37:24,100 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1930 transitions. [2023-09-01 01:37:24,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1930 transitions. [2023-09-01 01:37:24,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:24,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1930 transitions. [2023-09-01 01:37:24,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 193.0) internal successors, (1930), 10 states have internal predecessors, (1930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:24,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:24,104 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:24,104 INFO L175 Difference]: Start difference. First operand has 272 places, 246 transitions, 4653 flow. Second operand 10 states and 1930 transitions. [2023-09-01 01:37:24,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 285 transitions, 5420 flow [2023-09-01 01:37:24,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 285 transitions, 5263 flow, removed 7 selfloop flow, removed 6 redundant places. [2023-09-01 01:37:24,394 INFO L231 Difference]: Finished difference. Result has 278 places, 249 transitions, 4747 flow [2023-09-01 01:37:24,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4504, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4747, PETRI_PLACES=278, PETRI_TRANSITIONS=249} [2023-09-01 01:37:24,395 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 223 predicate places. [2023-09-01 01:37:24,395 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 249 transitions, 4747 flow [2023-09-01 01:37:24,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 186.9090909090909) internal successors, (2056), 11 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:24,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:24,396 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:24,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (96)] Forceful destruction successful, exit code 0 [2023-09-01 01:37:24,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:24,609 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:24,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:24,609 INFO L85 PathProgramCache]: Analyzing trace with hash 153902735, now seen corresponding path program 38 times [2023-09-01 01:37:24,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:24,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939665176] [2023-09-01 01:37:24,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:37:24,610 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:24,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:24,611 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:24,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Waiting until timeout for monitored process [2023-09-01 01:37:24,975 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:37:24,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:24,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:37:24,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:25,311 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:37:25,312 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:37:25,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:37:25,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:37:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:25,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:25,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:25,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939665176] [2023-09-01 01:37:25,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1939665176] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:25,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:25,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 01:37:25,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665216302] [2023-09-01 01:37:25,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:25,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-09-01 01:37:25,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:25,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-09-01 01:37:25,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-09-01 01:37:26,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 476 [2023-09-01 01:37:26,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 249 transitions, 4747 flow. Second operand has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:26,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:26,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 476 [2023-09-01 01:37:26,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:29,021 INFO L130 PetriNetUnfolder]: 3525/6256 cut-off events. [2023-09-01 01:37:29,021 INFO L131 PetriNetUnfolder]: For 65881/65881 co-relation queries the response was YES. [2023-09-01 01:37:29,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34097 conditions, 6256 events. 3525/6256 cut-off events. For 65881/65881 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 39303 event pairs, 2138 based on Foata normal form. 5/6261 useless extension candidates. Maximal degree in co-relation 33990. Up to 3735 conditions per place. [2023-09-01 01:37:29,101 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 176 selfloop transitions, 102 changer transitions 9/287 dead transitions. [2023-09-01 01:37:29,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 287 transitions, 5483 flow [2023-09-01 01:37:29,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:37:29,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:37:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1927 transitions. [2023-09-01 01:37:29,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40483193277310925 [2023-09-01 01:37:29,104 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1927 transitions. [2023-09-01 01:37:29,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1927 transitions. [2023-09-01 01:37:29,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:29,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1927 transitions. [2023-09-01 01:37:29,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 192.7) internal successors, (1927), 10 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:29,107 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:29,107 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:29,107 INFO L175 Difference]: Start difference. First operand has 278 places, 249 transitions, 4747 flow. Second operand 10 states and 1927 transitions. [2023-09-01 01:37:29,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 287 transitions, 5483 flow [2023-09-01 01:37:29,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 287 transitions, 5361 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-09-01 01:37:29,354 INFO L231 Difference]: Finished difference. Result has 283 places, 249 transitions, 4861 flow [2023-09-01 01:37:29,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4631, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4861, PETRI_PLACES=283, PETRI_TRANSITIONS=249} [2023-09-01 01:37:29,355 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 228 predicate places. [2023-09-01 01:37:29,355 INFO L495 AbstractCegarLoop]: Abstraction has has 283 places, 249 transitions, 4861 flow [2023-09-01 01:37:29,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 185.9090909090909) internal successors, (2045), 11 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:29,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:29,355 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:29,363 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (97)] Ended with exit code 0 [2023-09-01 01:37:29,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:29,556 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:29,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:29,556 INFO L85 PathProgramCache]: Analyzing trace with hash 583293961, now seen corresponding path program 39 times [2023-09-01 01:37:29,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:29,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006934229] [2023-09-01 01:37:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:37:29,556 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:29,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:29,557 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:29,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Waiting until timeout for monitored process [2023-09-01 01:37:29,946 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:37:29,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:29,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 01:37:29,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:29,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2023-09-01 01:37:30,170 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:37:30,375 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:37:30,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 258 treesize of output 134 [2023-09-01 01:37:30,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:37:30,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:37:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:30,483 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:30,483 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:30,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006934229] [2023-09-01 01:37:30,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006934229] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:30,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:30,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:37:30,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854615129] [2023-09-01 01:37:30,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:30,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:37:30,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:30,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:37:30,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:37:32,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:37:32,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 249 transitions, 4861 flow. Second operand has 12 states, 12 states have (on average 183.75) internal successors, (2205), 12 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:32,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:32,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:37:32,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:35,238 INFO L130 PetriNetUnfolder]: 3583/6372 cut-off events. [2023-09-01 01:37:35,238 INFO L131 PetriNetUnfolder]: For 67285/67285 co-relation queries the response was YES. [2023-09-01 01:37:35,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35033 conditions, 6372 events. 3583/6372 cut-off events. For 67285/67285 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 40590 event pairs, 1996 based on Foata normal form. 1/6373 useless extension candidates. Maximal degree in co-relation 34925. Up to 3864 conditions per place. [2023-09-01 01:37:35,303 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 208 selfloop transitions, 104 changer transitions 5/317 dead transitions. [2023-09-01 01:37:35,303 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 317 transitions, 6007 flow [2023-09-01 01:37:35,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:37:35,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:37:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2281 transitions. [2023-09-01 01:37:35,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39933473389355745 [2023-09-01 01:37:35,306 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2281 transitions. [2023-09-01 01:37:35,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2281 transitions. [2023-09-01 01:37:35,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:35,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2281 transitions. [2023-09-01 01:37:35,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 190.08333333333334) internal successors, (2281), 12 states have internal predecessors, (2281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:35,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:35,310 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:35,310 INFO L175 Difference]: Start difference. First operand has 283 places, 249 transitions, 4861 flow. Second operand 12 states and 2281 transitions. [2023-09-01 01:37:35,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 317 transitions, 6007 flow [2023-09-01 01:37:35,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 317 transitions, 5759 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-09-01 01:37:35,553 INFO L231 Difference]: Finished difference. Result has 287 places, 262 transitions, 5244 flow [2023-09-01 01:37:35,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=4641, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5244, PETRI_PLACES=287, PETRI_TRANSITIONS=262} [2023-09-01 01:37:35,553 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 232 predicate places. [2023-09-01 01:37:35,553 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 262 transitions, 5244 flow [2023-09-01 01:37:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.75) internal successors, (2205), 12 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:35,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:35,554 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:35,565 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (98)] Ended with exit code 0 [2023-09-01 01:37:35,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:35,765 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:35,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:35,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1673950535, now seen corresponding path program 40 times [2023-09-01 01:37:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:35,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071735032] [2023-09-01 01:37:35,766 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:37:35,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:35,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:35,767 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:35,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2023-09-01 01:37:36,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:37:36,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:36,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 01:37:36,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:36,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:37:36,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:37:36,583 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-09-01 01:37:36,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 69 [2023-09-01 01:37:36,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-09-01 01:37:36,947 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:37:36,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:37:36,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:37:36,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:37:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:37,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:37,003 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:37,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071735032] [2023-09-01 01:37:37,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071735032] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:37,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:37,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:37:37,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134593387] [2023-09-01 01:37:37,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:37,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:37:37,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:37,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:37:37,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:37:39,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 476 [2023-09-01 01:37:39,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 262 transitions, 5244 flow. Second operand has 14 states, 14 states have (on average 181.5) internal successors, (2541), 14 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:39,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:39,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 476 [2023-09-01 01:37:39,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:43,557 INFO L130 PetriNetUnfolder]: 4001/7100 cut-off events. [2023-09-01 01:37:43,557 INFO L131 PetriNetUnfolder]: For 76036/76036 co-relation queries the response was YES. [2023-09-01 01:37:43,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40317 conditions, 7100 events. 4001/7100 cut-off events. For 76036/76036 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 46220 event pairs, 1575 based on Foata normal form. 5/7105 useless extension candidates. Maximal degree in co-relation 40207. Up to 2735 conditions per place. [2023-09-01 01:37:43,647 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 217 selfloop transitions, 167 changer transitions 10/394 dead transitions. [2023-09-01 01:37:43,648 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 394 transitions, 7554 flow [2023-09-01 01:37:43,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 01:37:43,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 01:37:43,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2818 transitions. [2023-09-01 01:37:43,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39467787114845937 [2023-09-01 01:37:43,651 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2818 transitions. [2023-09-01 01:37:43,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2818 transitions. [2023-09-01 01:37:43,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:43,651 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2818 transitions. [2023-09-01 01:37:43,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 187.86666666666667) internal successors, (2818), 15 states have internal predecessors, (2818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:43,655 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 476.0) internal successors, (7616), 16 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:43,656 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 476.0) internal successors, (7616), 16 states have internal predecessors, (7616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:43,656 INFO L175 Difference]: Start difference. First operand has 287 places, 262 transitions, 5244 flow. Second operand 15 states and 2818 transitions. [2023-09-01 01:37:43,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 394 transitions, 7554 flow [2023-09-01 01:37:44,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 394 transitions, 7455 flow, removed 46 selfloop flow, removed 4 redundant places. [2023-09-01 01:37:44,043 INFO L231 Difference]: Finished difference. Result has 301 places, 284 transitions, 6304 flow [2023-09-01 01:37:44,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=5185, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6304, PETRI_PLACES=301, PETRI_TRANSITIONS=284} [2023-09-01 01:37:44,043 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 246 predicate places. [2023-09-01 01:37:44,043 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 284 transitions, 6304 flow [2023-09-01 01:37:44,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 181.5) internal successors, (2541), 14 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:44,044 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:44,044 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:44,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (99)] Forceful destruction successful, exit code 0 [2023-09-01 01:37:44,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:44,257 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:37:44,258 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:44,258 INFO L85 PathProgramCache]: Analyzing trace with hash 317709849, now seen corresponding path program 41 times [2023-09-01 01:37:44,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:37:44,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507082589] [2023-09-01 01:37:44,258 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:37:44,258 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:37:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:37:44,259 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:37:44,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Waiting until timeout for monitored process [2023-09-01 01:37:44,888 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:37:44,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:37:44,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 01:37:44,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:37:44,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:37:45,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:37:45,518 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:37:45,518 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 120 [2023-09-01 01:37:47,045 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:37:47,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:37:47,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:37:47,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:37:47,123 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:37:47,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:37:47,123 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:37:47,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507082589] [2023-09-01 01:37:47,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507082589] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:47,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:47,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:37:47,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420280111] [2023-09-01 01:37:47,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:47,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:37:47,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:37:47,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:37:47,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:37:54,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 476 [2023-09-01 01:37:54,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 284 transitions, 6304 flow. Second operand has 14 states, 14 states have (on average 180.5) internal successors, (2527), 14 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:54,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:54,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 476 [2023-09-01 01:37:54,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:38:00,526 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:38:04,625 INFO L130 PetriNetUnfolder]: 4067/7296 cut-off events. [2023-09-01 01:38:04,625 INFO L131 PetriNetUnfolder]: For 84190/84190 co-relation queries the response was YES. [2023-09-01 01:38:04,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42656 conditions, 7296 events. 4067/7296 cut-off events. For 84190/84190 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 48291 event pairs, 1530 based on Foata normal form. 5/7301 useless extension candidates. Maximal degree in co-relation 42543. Up to 2449 conditions per place. [2023-09-01 01:38:04,703 INFO L137 encePairwiseOnDemand]: 462/476 looper letters, 198 selfloop transitions, 165 changer transitions 11/374 dead transitions. [2023-09-01 01:38:04,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 374 transitions, 7719 flow [2023-09-01 01:38:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:38:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:38:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2250 transitions. [2023-09-01 01:38:04,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3939075630252101 [2023-09-01 01:38:04,706 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2250 transitions. [2023-09-01 01:38:04,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2250 transitions. [2023-09-01 01:38:04,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:38:04,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2250 transitions. [2023-09-01 01:38:04,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 187.5) internal successors, (2250), 12 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:04,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:04,710 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:04,710 INFO L175 Difference]: Start difference. First operand has 301 places, 284 transitions, 6304 flow. Second operand 12 states and 2250 transitions. [2023-09-01 01:38:04,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 374 transitions, 7719 flow [2023-09-01 01:38:05,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 374 transitions, 7402 flow, removed 40 selfloop flow, removed 11 redundant places. [2023-09-01 01:38:05,139 INFO L231 Difference]: Finished difference. Result has 304 places, 287 transitions, 6569 flow [2023-09-01 01:38:05,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=6007, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=162, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6569, PETRI_PLACES=304, PETRI_TRANSITIONS=287} [2023-09-01 01:38:05,139 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 249 predicate places. [2023-09-01 01:38:05,139 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 287 transitions, 6569 flow [2023-09-01 01:38:05,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 180.5) internal successors, (2527), 14 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:05,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:38:05,140 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:38:05,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (100)] Ended with exit code 0 [2023-09-01 01:38:05,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:38:05,340 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:38:05,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:38:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash -156853737, now seen corresponding path program 42 times [2023-09-01 01:38:05,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:38:05,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046547128] [2023-09-01 01:38:05,341 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:38:05,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:38:05,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:38:05,342 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:38:05,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Waiting until timeout for monitored process [2023-09-01 01:38:05,748 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 01:38:05,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:38:05,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 32 conjunts are in the unsatisfiable core [2023-09-01 01:38:05,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:38:05,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:38:06,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:38:06,382 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:38:06,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 120 [2023-09-01 01:38:08,568 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:38:08,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 306 treesize of output 150 [2023-09-01 01:38:08,581 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:38:08,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:38:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:38:08,682 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:38:08,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:38:08,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2046547128] [2023-09-01 01:38:08,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2046547128] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:38:08,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:38:08,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:38:08,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764733608] [2023-09-01 01:38:08,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:38:08,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:38:08,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:38:08,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:38:08,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:38:09,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:38:16,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 178 out of 476 [2023-09-01 01:38:16,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 287 transitions, 6569 flow. Second operand has 14 states, 14 states have (on average 179.5) internal successors, (2513), 14 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:16,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:38:16,599 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 178 of 476 [2023-09-01 01:38:16,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:38:26,902 INFO L130 PetriNetUnfolder]: 4051/7281 cut-off events. [2023-09-01 01:38:26,903 INFO L131 PetriNetUnfolder]: For 88442/88442 co-relation queries the response was YES. [2023-09-01 01:38:26,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43467 conditions, 7281 events. 4051/7281 cut-off events. For 88442/88442 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 48143 event pairs, 1572 based on Foata normal form. 10/7291 useless extension candidates. Maximal degree in co-relation 43354. Up to 2449 conditions per place. [2023-09-01 01:38:26,998 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 199 selfloop transitions, 179 changer transitions 8/386 dead transitions. [2023-09-01 01:38:26,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 386 transitions, 7890 flow [2023-09-01 01:38:27,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 01:38:27,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 01:38:27,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2615 transitions. [2023-09-01 01:38:27,003 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39240696278511406 [2023-09-01 01:38:27,003 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2615 transitions. [2023-09-01 01:38:27,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2615 transitions. [2023-09-01 01:38:27,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:38:27,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2615 transitions. [2023-09-01 01:38:27,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 186.78571428571428) internal successors, (2615), 14 states have internal predecessors, (2615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:27,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:27,008 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 476.0) internal successors, (7140), 15 states have internal predecessors, (7140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:27,008 INFO L175 Difference]: Start difference. First operand has 304 places, 287 transitions, 6569 flow. Second operand 14 states and 2615 transitions. [2023-09-01 01:38:27,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 386 transitions, 7890 flow [2023-09-01 01:38:27,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 386 transitions, 7674 flow, removed 14 selfloop flow, removed 9 redundant places. [2023-09-01 01:38:27,481 INFO L231 Difference]: Finished difference. Result has 311 places, 294 transitions, 6914 flow [2023-09-01 01:38:27,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=6221, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6914, PETRI_PLACES=311, PETRI_TRANSITIONS=294} [2023-09-01 01:38:27,482 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 256 predicate places. [2023-09-01 01:38:27,482 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 294 transitions, 6914 flow [2023-09-01 01:38:27,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 179.5) internal successors, (2513), 14 states have internal predecessors, (2513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:27,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:38:27,483 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:38:27,491 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (101)] Ended with exit code 0 [2023-09-01 01:38:27,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:38:27,685 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:38:27,685 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:38:27,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1747084667, now seen corresponding path program 43 times [2023-09-01 01:38:27,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:38:27,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426376221] [2023-09-01 01:38:27,686 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:38:27,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:38:27,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:38:27,686 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:38:27,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2023-09-01 01:38:28,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:38:28,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 01:38:28,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:38:28,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:38:28,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:38:28,482 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-09-01 01:38:28,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 69 [2023-09-01 01:38:28,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-09-01 01:38:28,893 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:38:28,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:38:28,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:38:28,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:38:28,947 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:38:28,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:38:28,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:38:28,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426376221] [2023-09-01 01:38:28,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426376221] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:38:28,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:38:28,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:38:28,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991833825] [2023-09-01 01:38:28,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:38:28,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:38:28,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:38:28,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:38:28,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:38:32,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 476 [2023-09-01 01:38:32,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 294 transitions, 6914 flow. Second operand has 14 states, 14 states have (on average 181.5) internal successors, (2541), 14 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:32,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:38:32,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 476 [2023-09-01 01:38:32,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:38:36,131 INFO L130 PetriNetUnfolder]: 4138/7391 cut-off events. [2023-09-01 01:38:36,131 INFO L131 PetriNetUnfolder]: For 99203/99203 co-relation queries the response was YES. [2023-09-01 01:38:36,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45397 conditions, 7391 events. 4138/7391 cut-off events. For 99203/99203 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 48981 event pairs, 1676 based on Foata normal form. 5/7396 useless extension candidates. Maximal degree in co-relation 45282. Up to 2833 conditions per place. [2023-09-01 01:38:36,214 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 217 selfloop transitions, 181 changer transitions 10/408 dead transitions. [2023-09-01 01:38:36,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 408 transitions, 8641 flow [2023-09-01 01:38:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 01:38:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 01:38:36,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3193 transitions. [2023-09-01 01:38:36,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39458724666337125 [2023-09-01 01:38:36,217 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3193 transitions. [2023-09-01 01:38:36,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3193 transitions. [2023-09-01 01:38:36,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:38:36,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3193 transitions. [2023-09-01 01:38:36,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 187.8235294117647) internal successors, (3193), 17 states have internal predecessors, (3193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:36,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 476.0) internal successors, (8568), 18 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:36,223 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 476.0) internal successors, (8568), 18 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:36,223 INFO L175 Difference]: Start difference. First operand has 311 places, 294 transitions, 6914 flow. Second operand 17 states and 3193 transitions. [2023-09-01 01:38:36,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 408 transitions, 8641 flow [2023-09-01 01:38:36,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 408 transitions, 8162 flow, removed 85 selfloop flow, removed 10 redundant places. [2023-09-01 01:38:36,690 INFO L231 Difference]: Finished difference. Result has 321 places, 304 transitions, 7268 flow [2023-09-01 01:38:36,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=6503, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7268, PETRI_PLACES=321, PETRI_TRANSITIONS=304} [2023-09-01 01:38:36,690 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 266 predicate places. [2023-09-01 01:38:36,690 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 304 transitions, 7268 flow [2023-09-01 01:38:36,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 181.5) internal successors, (2541), 14 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:36,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:38:36,691 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:38:36,701 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (102)] Ended with exit code 0 [2023-09-01 01:38:36,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:38:36,891 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:38:36,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:38:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1403607087, now seen corresponding path program 44 times [2023-09-01 01:38:36,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:38:36,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1851859070] [2023-09-01 01:38:36,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:38:36,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:38:36,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:38:36,893 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:38:36,894 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2023-09-01 01:38:37,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 01:38:37,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:38:37,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 33 conjunts are in the unsatisfiable core [2023-09-01 01:38:37,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:38:37,320 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-09-01 01:38:37,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:38:37,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:38:37,944 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:38:37,944 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 159 treesize of output 120 [2023-09-01 01:38:39,812 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:38:39,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 7 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:38:39,823 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:38:39,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:38:39,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:38:39,910 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:38:39,911 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:38:39,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1851859070] [2023-09-01 01:38:39,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1851859070] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:38:39,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:38:39,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:38:39,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129377479] [2023-09-01 01:38:39,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:38:39,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:38:39,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:38:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:38:39,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:38:48,174 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:38:50,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 476 [2023-09-01 01:38:50,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 304 transitions, 7268 flow. Second operand has 14 states, 14 states have (on average 180.5) internal successors, (2527), 14 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:38:50,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:38:50,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 476 [2023-09-01 01:38:50,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:39:02,775 INFO L130 PetriNetUnfolder]: 4130/7373 cut-off events. [2023-09-01 01:39:02,776 INFO L131 PetriNetUnfolder]: For 98564/98564 co-relation queries the response was YES. [2023-09-01 01:39:02,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45384 conditions, 7373 events. 4130/7373 cut-off events. For 98564/98564 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 48506 event pairs, 1572 based on Foata normal form. 5/7378 useless extension candidates. Maximal degree in co-relation 45267. Up to 2449 conditions per place. [2023-09-01 01:39:02,876 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 193 selfloop transitions, 183 changer transitions 9/385 dead transitions. [2023-09-01 01:39:02,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 385 transitions, 8442 flow [2023-09-01 01:39:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 01:39:02,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 01:39:02,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2441 transitions. [2023-09-01 01:39:02,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944731738849386 [2023-09-01 01:39:02,879 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2441 transitions. [2023-09-01 01:39:02,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2441 transitions. [2023-09-01 01:39:02,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:39:02,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2441 transitions. [2023-09-01 01:39:02,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 187.76923076923077) internal successors, (2441), 13 states have internal predecessors, (2441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:02,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:02,884 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 476.0) internal successors, (6664), 14 states have internal predecessors, (6664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:02,884 INFO L175 Difference]: Start difference. First operand has 321 places, 304 transitions, 7268 flow. Second operand 13 states and 2441 transitions. [2023-09-01 01:39:02,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 385 transitions, 8442 flow [2023-09-01 01:39:03,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 385 transitions, 8166 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-09-01 01:39:03,628 INFO L231 Difference]: Finished difference. Result has 324 places, 304 transitions, 7392 flow [2023-09-01 01:39:03,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7005, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7392, PETRI_PLACES=324, PETRI_TRANSITIONS=304} [2023-09-01 01:39:03,629 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 269 predicate places. [2023-09-01 01:39:03,629 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 304 transitions, 7392 flow [2023-09-01 01:39:03,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 180.5) internal successors, (2527), 14 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:03,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:39:03,630 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:39:03,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (103)] Forceful destruction successful, exit code 0 [2023-09-01 01:39:03,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:03,841 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:39:03,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:39:03,841 INFO L85 PathProgramCache]: Analyzing trace with hash -663459389, now seen corresponding path program 45 times [2023-09-01 01:39:03,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:39:03,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959209399] [2023-09-01 01:39:03,841 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:39:03,841 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:03,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:39:03,842 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:39:03,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Waiting until timeout for monitored process [2023-09-01 01:39:04,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 01:39:04,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:39:04,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2023-09-01 01:39:04,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:39:04,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2023-09-01 01:39:04,515 INFO L321 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2023-09-01 01:39:04,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 80 treesize of output 69 [2023-09-01 01:39:04,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2023-09-01 01:39:04,827 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:39:04,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:39:04,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:39:04,837 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:39:04,882 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:04,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:39:04,883 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:39:04,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959209399] [2023-09-01 01:39:04,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959209399] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:39:04,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:39:04,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:39:04,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364719139] [2023-09-01 01:39:04,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:39:04,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:39:04,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:39:04,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:39:04,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:39:08,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 476 [2023-09-01 01:39:08,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 304 transitions, 7392 flow. Second operand has 14 states, 14 states have (on average 181.5) internal successors, (2541), 14 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:08,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:39:08,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 476 [2023-09-01 01:39:08,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:39:12,218 INFO L130 PetriNetUnfolder]: 4249/7627 cut-off events. [2023-09-01 01:39:12,218 INFO L131 PetriNetUnfolder]: For 117915/117915 co-relation queries the response was YES. [2023-09-01 01:39:12,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47203 conditions, 7627 events. 4249/7627 cut-off events. For 117915/117915 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 51658 event pairs, 2223 based on Foata normal form. 5/7632 useless extension candidates. Maximal degree in co-relation 47086. Up to 4492 conditions per place. [2023-09-01 01:39:12,309 INFO L137 encePairwiseOnDemand]: 461/476 looper letters, 244 selfloop transitions, 140 changer transitions 6/390 dead transitions. [2023-09-01 01:39:12,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 390 transitions, 8725 flow [2023-09-01 01:39:12,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 01:39:12,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 01:39:12,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3181 transitions. [2023-09-01 01:39:12,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931043005437469 [2023-09-01 01:39:12,312 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3181 transitions. [2023-09-01 01:39:12,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3181 transitions. [2023-09-01 01:39:12,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:39:12,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3181 transitions. [2023-09-01 01:39:12,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 187.11764705882354) internal successors, (3181), 17 states have internal predecessors, (3181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:12,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 476.0) internal successors, (8568), 18 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:12,318 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 476.0) internal successors, (8568), 18 states have internal predecessors, (8568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:12,318 INFO L175 Difference]: Start difference. First operand has 324 places, 304 transitions, 7392 flow. Second operand 17 states and 3181 transitions. [2023-09-01 01:39:12,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 390 transitions, 8725 flow [2023-09-01 01:39:12,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 390 transitions, 8300 flow, removed 6 selfloop flow, removed 14 redundant places. [2023-09-01 01:39:12,858 INFO L231 Difference]: Finished difference. Result has 327 places, 308 transitions, 7389 flow [2023-09-01 01:39:12,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=6979, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7389, PETRI_PLACES=327, PETRI_TRANSITIONS=308} [2023-09-01 01:39:12,859 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 272 predicate places. [2023-09-01 01:39:12,859 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 308 transitions, 7389 flow [2023-09-01 01:39:12,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 181.5) internal successors, (2541), 14 states have internal predecessors, (2541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:12,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:39:12,860 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:39:12,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (104)] Ended with exit code 0 [2023-09-01 01:39:13,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:13,065 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:39:13,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:39:13,065 INFO L85 PathProgramCache]: Analyzing trace with hash -890576253, now seen corresponding path program 46 times [2023-09-01 01:39:13,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:39:13,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086388919] [2023-09-01 01:39:13,066 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:39:13,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:13,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:39:13,066 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:39:13,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Waiting until timeout for monitored process [2023-09-01 01:39:13,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:39:13,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:39:13,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 34 conjunts are in the unsatisfiable core [2023-09-01 01:39:13,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:39:13,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:39:13,651 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2023-09-01 01:39:13,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:39:14,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:39:14,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 01:39:14,389 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:39:14,390 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2023-09-01 01:39:14,714 INFO L321 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-09-01 01:39:14,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 201 treesize of output 109 [2023-09-01 01:39:14,721 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 89 treesize of output 81 [2023-09-01 01:39:14,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 73 [2023-09-01 01:39:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:14,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:39:14,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:39:14,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086388919] [2023-09-01 01:39:14,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086388919] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:39:14,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:39:14,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-09-01 01:39:14,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484777294] [2023-09-01 01:39:14,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:39:14,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-09-01 01:39:14,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:39:14,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-09-01 01:39:14,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:39:21,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 476 [2023-09-01 01:39:21,447 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 308 transitions, 7389 flow. Second operand has 14 states, 14 states have (on average 180.5) internal successors, (2527), 14 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:21,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:39:21,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 476 [2023-09-01 01:39:21,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:39:30,006 INFO L130 PetriNetUnfolder]: 4216/7538 cut-off events. [2023-09-01 01:39:30,006 INFO L131 PetriNetUnfolder]: For 104100/104100 co-relation queries the response was YES. [2023-09-01 01:39:30,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46378 conditions, 7538 events. 4216/7538 cut-off events. For 104100/104100 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 50194 event pairs, 1584 based on Foata normal form. 5/7543 useless extension candidates. Maximal degree in co-relation 46260. Up to 2449 conditions per place. [2023-09-01 01:39:30,081 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 195 selfloop transitions, 175 changer transitions 12/382 dead transitions. [2023-09-01 01:39:30,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 382 transitions, 8541 flow [2023-09-01 01:39:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 01:39:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 01:39:30,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2246 transitions. [2023-09-01 01:39:30,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39320728291316526 [2023-09-01 01:39:30,084 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2246 transitions. [2023-09-01 01:39:30,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2246 transitions. [2023-09-01 01:39:30,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:39:30,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2246 transitions. [2023-09-01 01:39:30,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 187.16666666666666) internal successors, (2246), 12 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:30,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:30,088 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 476.0) internal successors, (6188), 13 states have internal predecessors, (6188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:30,088 INFO L175 Difference]: Start difference. First operand has 327 places, 308 transitions, 7389 flow. Second operand 12 states and 2246 transitions. [2023-09-01 01:39:30,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 382 transitions, 8541 flow [2023-09-01 01:39:30,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 382 transitions, 8293 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-09-01 01:39:30,597 INFO L231 Difference]: Finished difference. Result has 331 places, 306 transitions, 7472 flow [2023-09-01 01:39:30,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7145, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=175, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7472, PETRI_PLACES=331, PETRI_TRANSITIONS=306} [2023-09-01 01:39:30,597 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 276 predicate places. [2023-09-01 01:39:30,597 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 306 transitions, 7472 flow [2023-09-01 01:39:30,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 180.5) internal successors, (2527), 14 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:30,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:39:30,598 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:39:30,607 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (105)] Ended with exit code 0 [2023-09-01 01:39:30,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:30,798 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:39:30,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:39:30,799 INFO L85 PathProgramCache]: Analyzing trace with hash -279743091, now seen corresponding path program 47 times [2023-09-01 01:39:30,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:39:30,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759275204] [2023-09-01 01:39:30,799 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:39:30,799 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:30,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:39:30,800 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:39:30,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2023-09-01 01:39:31,443 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:39:31,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:39:31,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 26 conjunts are in the unsatisfiable core [2023-09-01 01:39:31,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:39:31,462 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-09-01 01:39:31,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-09-01 01:39:31,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:39:31,766 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-09-01 01:39:31,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 153 treesize of output 145 [2023-09-01 01:39:31,772 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-09-01 01:39:31,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 145 treesize of output 137 [2023-09-01 01:39:31,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 01:39:31,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 216 treesize of output 184 [2023-09-01 01:39:32,082 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:32,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 01:39:32,082 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:39:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759275204] [2023-09-01 01:39:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759275204] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:39:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:39:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-09-01 01:39:32,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209356528] [2023-09-01 01:39:32,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:39:32,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 01:39:32,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:39:32,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 01:39:32,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-09-01 01:39:34,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 476 [2023-09-01 01:39:34,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 306 transitions, 7472 flow. Second operand has 12 states, 12 states have (on average 183.75) internal successors, (2205), 12 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:34,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:39:34,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 476 [2023-09-01 01:39:34,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:39:36,961 INFO L130 PetriNetUnfolder]: 4208/7511 cut-off events. [2023-09-01 01:39:36,961 INFO L131 PetriNetUnfolder]: For 129142/129142 co-relation queries the response was YES. [2023-09-01 01:39:37,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46617 conditions, 7511 events. 4208/7511 cut-off events. For 129142/129142 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 50266 event pairs, 2530 based on Foata normal form. 1/7512 useless extension candidates. Maximal degree in co-relation 46497. Up to 4638 conditions per place. [2023-09-01 01:39:37,053 INFO L137 encePairwiseOnDemand]: 464/476 looper letters, 235 selfloop transitions, 103 changer transitions 6/344 dead transitions. [2023-09-01 01:39:37,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 344 transitions, 8361 flow [2023-09-01 01:39:37,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 01:39:37,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 01:39:37,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2075 transitions. [2023-09-01 01:39:37,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3962948815889992 [2023-09-01 01:39:37,056 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2075 transitions. [2023-09-01 01:39:37,056 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2075 transitions. [2023-09-01 01:39:37,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:39:37,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2075 transitions. [2023-09-01 01:39:37,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 188.63636363636363) internal successors, (2075), 11 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:37,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:37,060 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 476.0) internal successors, (5712), 12 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:37,060 INFO L175 Difference]: Start difference. First operand has 331 places, 306 transitions, 7472 flow. Second operand 11 states and 2075 transitions. [2023-09-01 01:39:37,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 344 transitions, 8361 flow [2023-09-01 01:39:37,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 344 transitions, 8009 flow, removed 9 selfloop flow, removed 11 redundant places. [2023-09-01 01:39:37,498 INFO L231 Difference]: Finished difference. Result has 330 places, 308 transitions, 7404 flow [2023-09-01 01:39:37,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7130, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=7404, PETRI_PLACES=330, PETRI_TRANSITIONS=308} [2023-09-01 01:39:37,498 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 275 predicate places. [2023-09-01 01:39:37,498 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 308 transitions, 7404 flow [2023-09-01 01:39:37,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 183.75) internal successors, (2205), 12 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:37,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:39:37,499 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:39:37,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (106)] Forceful destruction successful, exit code 0 [2023-09-01 01:39:37,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:37,699 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:39:37,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:39:37,700 INFO L85 PathProgramCache]: Analyzing trace with hash 417903929, now seen corresponding path program 1 times [2023-09-01 01:39:37,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:39:37,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2087032454] [2023-09-01 01:39:37,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:39:37,700 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:37,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:39:37,703 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:39:37,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (107)] Waiting until timeout for monitored process [2023-09-01 01:39:38,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:39:38,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:39:38,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:39:38,529 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:39:38,530 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 249 treesize of output 89 [2023-09-01 01:39:38,550 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:38,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:39:42,449 INFO L321 Elim1Store]: treesize reduction 420, result has 66.7 percent of original size [2023-09-01 01:39:42,449 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 290 treesize of output 902 [2023-09-01 01:39:42,743 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:42,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:39:42,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2087032454] [2023-09-01 01:39:42,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2087032454] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 01:39:42,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 01:39:42,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-09-01 01:39:42,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635404804] [2023-09-01 01:39:42,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:39:42,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 01:39:42,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:39:42,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 01:39:42,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-09-01 01:39:50,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:39:50,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 308 transitions, 7404 flow. Second operand has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:50,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:39:50,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:39:50,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:39:56,175 INFO L130 PetriNetUnfolder]: 4312/7778 cut-off events. [2023-09-01 01:39:56,175 INFO L131 PetriNetUnfolder]: For 112757/112757 co-relation queries the response was YES. [2023-09-01 01:39:56,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47846 conditions, 7778 events. 4312/7778 cut-off events. For 112757/112757 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 52016 event pairs, 1149 based on Foata normal form. 60/7838 useless extension candidates. Maximal degree in co-relation 47727. Up to 3427 conditions per place. [2023-09-01 01:39:56,259 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 198 selfloop transitions, 168 changer transitions 1/367 dead transitions. [2023-09-01 01:39:56,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 367 transitions, 8463 flow [2023-09-01 01:39:56,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 01:39:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 01:39:56,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1994 transitions. [2023-09-01 01:39:56,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4189075630252101 [2023-09-01 01:39:56,263 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1994 transitions. [2023-09-01 01:39:56,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1994 transitions. [2023-09-01 01:39:56,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:39:56,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1994 transitions. [2023-09-01 01:39:56,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 199.4) internal successors, (1994), 10 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:56,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:56,266 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 476.0) internal successors, (5236), 11 states have internal predecessors, (5236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:56,266 INFO L175 Difference]: Start difference. First operand has 330 places, 308 transitions, 7404 flow. Second operand 10 states and 1994 transitions. [2023-09-01 01:39:56,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 367 transitions, 8463 flow [2023-09-01 01:39:56,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 367 transitions, 8237 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-09-01 01:39:56,832 INFO L231 Difference]: Finished difference. Result has 328 places, 309 transitions, 7595 flow [2023-09-01 01:39:56,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7169, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7595, PETRI_PLACES=328, PETRI_TRANSITIONS=309} [2023-09-01 01:39:56,832 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 273 predicate places. [2023-09-01 01:39:56,832 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 309 transitions, 7595 flow [2023-09-01 01:39:56,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:56,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:39:56,833 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:39:56,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (107)] Ended with exit code 0 [2023-09-01 01:39:57,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:57,033 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:39:57,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:39:57,034 INFO L85 PathProgramCache]: Analyzing trace with hash 1830852323, now seen corresponding path program 1 times [2023-09-01 01:39:57,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:39:57,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485807993] [2023-09-01 01:39:57,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:39:57,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:39:57,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:39:57,035 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:39:57,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (108)] Waiting until timeout for monitored process [2023-09-01 01:39:57,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:39:57,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 01:39:57,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:39:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:57,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:39:57,573 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:39:57,573 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:39:57,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485807993] [2023-09-01 01:39:57,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485807993] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:39:57,573 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:39:57,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-09-01 01:39:57,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705123784] [2023-09-01 01:39:57,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:39:57,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 01:39:57,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:39:57,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 01:39:57,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 01:39:57,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 476 [2023-09-01 01:39:57,725 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 309 transitions, 7595 flow. Second operand has 8 states, 8 states have (on average 208.375) internal successors, (1667), 8 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:57,725 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:39:57,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 476 [2023-09-01 01:39:57,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:39:59,571 INFO L130 PetriNetUnfolder]: 3332/6160 cut-off events. [2023-09-01 01:39:59,571 INFO L131 PetriNetUnfolder]: For 133815/133836 co-relation queries the response was YES. [2023-09-01 01:39:59,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41229 conditions, 6160 events. 3332/6160 cut-off events. For 133815/133836 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 40358 event pairs, 809 based on Foata normal form. 207/6364 useless extension candidates. Maximal degree in co-relation 41112. Up to 2340 conditions per place. [2023-09-01 01:39:59,641 INFO L137 encePairwiseOnDemand]: 470/476 looper letters, 311 selfloop transitions, 57 changer transitions 0/380 dead transitions. [2023-09-01 01:39:59,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 380 transitions, 8750 flow [2023-09-01 01:39:59,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 01:39:59,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 01:39:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1528 transitions. [2023-09-01 01:39:59,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45858343337334934 [2023-09-01 01:39:59,643 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1528 transitions. [2023-09-01 01:39:59,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1528 transitions. [2023-09-01 01:39:59,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:39:59,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1528 transitions. [2023-09-01 01:39:59,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 218.28571428571428) internal successors, (1528), 7 states have internal predecessors, (1528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:59,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:59,649 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 476.0) internal successors, (3808), 8 states have internal predecessors, (3808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:39:59,649 INFO L175 Difference]: Start difference. First operand has 328 places, 309 transitions, 7595 flow. Second operand 7 states and 1528 transitions. [2023-09-01 01:39:59,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 380 transitions, 8750 flow [2023-09-01 01:39:59,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 380 transitions, 8529 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-09-01 01:40:00,005 INFO L231 Difference]: Finished difference. Result has 328 places, 309 transitions, 7545 flow [2023-09-01 01:40:00,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7374, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=7545, PETRI_PLACES=328, PETRI_TRANSITIONS=309} [2023-09-01 01:40:00,005 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 273 predicate places. [2023-09-01 01:40:00,005 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 309 transitions, 7545 flow [2023-09-01 01:40:00,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 208.375) internal successors, (1667), 8 states have internal predecessors, (1667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:00,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:40:00,006 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:40:00,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (108)] Forceful destruction successful, exit code 0 [2023-09-01 01:40:00,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:40:00,210 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:40:00,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:40:00,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1980669881, now seen corresponding path program 2 times [2023-09-01 01:40:00,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:40:00,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061190693] [2023-09-01 01:40:00,211 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:40:00,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:40:00,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:40:00,213 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:40:00,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2023-09-01 01:40:00,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 01:40:00,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:40:00,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:40:00,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:40:01,114 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:40:01,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 73 [2023-09-01 01:40:01,145 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:40:01,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:40:05,380 INFO L321 Elim1Store]: treesize reduction 420, result has 66.7 percent of original size [2023-09-01 01:40:05,381 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 290 treesize of output 902 [2023-09-01 01:40:05,621 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:40:05,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:40:05,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061190693] [2023-09-01 01:40:05,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061190693] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:40:05,621 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 01:40:05,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2023-09-01 01:40:05,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397011745] [2023-09-01 01:40:05,621 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 01:40:05,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 01:40:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:40:05,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 01:40:05,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-09-01 01:40:12,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:40:17,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-09-01 01:40:17,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 185 out of 476 [2023-09-01 01:40:17,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 309 transitions, 7545 flow. Second operand has 18 states, 18 states have (on average 187.11111111111111) internal successors, (3368), 18 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:17,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:40:17,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 185 of 476 [2023-09-01 01:40:17,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:40:23,720 INFO L130 PetriNetUnfolder]: 4049/7158 cut-off events. [2023-09-01 01:40:23,721 INFO L131 PetriNetUnfolder]: For 119328/119328 co-relation queries the response was YES. [2023-09-01 01:40:23,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48045 conditions, 7158 events. 4049/7158 cut-off events. For 119328/119328 co-relation queries the response was YES. Maximal size of possible extension queue 303. Compared 45998 event pairs, 964 based on Foata normal form. 60/7218 useless extension candidates. Maximal degree in co-relation 47928. Up to 2531 conditions per place. [2023-09-01 01:40:23,818 INFO L137 encePairwiseOnDemand]: 463/476 looper letters, 226 selfloop transitions, 203 changer transitions 6/435 dead transitions. [2023-09-01 01:40:23,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 435 transitions, 9261 flow [2023-09-01 01:40:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 01:40:23,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 01:40:23,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4407 transitions. [2023-09-01 01:40:23,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4025392765801973 [2023-09-01 01:40:23,822 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 4407 transitions. [2023-09-01 01:40:23,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 4407 transitions. [2023-09-01 01:40:23,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:40:23,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 4407 transitions. [2023-09-01 01:40:23,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 191.6086956521739) internal successors, (4407), 23 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:23,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 476.0) internal successors, (11424), 24 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:23,830 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 476.0) internal successors, (11424), 24 states have internal predecessors, (11424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:23,830 INFO L175 Difference]: Start difference. First operand has 328 places, 309 transitions, 7545 flow. Second operand 23 states and 4407 transitions. [2023-09-01 01:40:23,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 435 transitions, 9261 flow [2023-09-01 01:40:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 435 transitions, 9036 flow, removed 4 selfloop flow, removed 9 redundant places. [2023-09-01 01:40:24,823 INFO L231 Difference]: Finished difference. Result has 346 places, 319 transitions, 8122 flow [2023-09-01 01:40:24,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7332, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=193, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=8122, PETRI_PLACES=346, PETRI_TRANSITIONS=319} [2023-09-01 01:40:24,824 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 291 predicate places. [2023-09-01 01:40:24,824 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 319 transitions, 8122 flow [2023-09-01 01:40:24,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 187.11111111111111) internal successors, (3368), 18 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:24,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:40:24,825 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:40:24,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (109)] Ended with exit code 0 [2023-09-01 01:40:25,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:40:25,038 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:40:25,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:40:25,038 INFO L85 PathProgramCache]: Analyzing trace with hash 929916607, now seen corresponding path program 3 times [2023-09-01 01:40:25,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:40:25,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507364589] [2023-09-01 01:40:25,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 01:40:25,039 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:40:25,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:40:25,040 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:40:25,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (110)] Waiting until timeout for monitored process [2023-09-01 01:40:25,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 01:40:25,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:40:25,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:40:25,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:40:25,799 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:40:25,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 73 [2023-09-01 01:40:25,820 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:40:25,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:40:29,839 INFO L321 Elim1Store]: treesize reduction 420, result has 66.7 percent of original size [2023-09-01 01:40:29,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 290 treesize of output 902 [2023-09-01 01:40:30,101 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:40:30,101 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:40:30,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [507364589] [2023-09-01 01:40:30,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [507364589] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 01:40:30,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 01:40:30,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-09-01 01:40:30,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643769953] [2023-09-01 01:40:30,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:40:30,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 01:40:30,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:40:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 01:40:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-09-01 01:40:35,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:40:35,069 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 319 transitions, 8122 flow. Second operand has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:35,069 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:40:35,069 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:40:35,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:40:40,805 INFO L130 PetriNetUnfolder]: 4189/7398 cut-off events. [2023-09-01 01:40:40,805 INFO L131 PetriNetUnfolder]: For 157706/157706 co-relation queries the response was YES. [2023-09-01 01:40:40,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51775 conditions, 7398 events. 4189/7398 cut-off events. For 157706/157706 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 47902 event pairs, 1296 based on Foata normal form. 60/7458 useless extension candidates. Maximal degree in co-relation 51656. Up to 2591 conditions per place. [2023-09-01 01:40:40,902 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 191 selfloop transitions, 179 changer transitions 0/370 dead transitions. [2023-09-01 01:40:40,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 370 transitions, 9275 flow [2023-09-01 01:40:40,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:40:40,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:40:40,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1792 transitions. [2023-09-01 01:40:40,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2023-09-01 01:40:40,905 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1792 transitions. [2023-09-01 01:40:40,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1792 transitions. [2023-09-01 01:40:40,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:40:40,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1792 transitions. [2023-09-01 01:40:40,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.11111111111111) internal successors, (1792), 9 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:40,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:40,909 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:40,909 INFO L175 Difference]: Start difference. First operand has 346 places, 319 transitions, 8122 flow. Second operand 9 states and 1792 transitions. [2023-09-01 01:40:40,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 370 transitions, 9275 flow [2023-09-01 01:40:41,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 370 transitions, 8759 flow, removed 12 selfloop flow, removed 15 redundant places. [2023-09-01 01:40:41,630 INFO L231 Difference]: Finished difference. Result has 340 places, 324 transitions, 8184 flow [2023-09-01 01:40:41,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7618, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=174, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8184, PETRI_PLACES=340, PETRI_TRANSITIONS=324} [2023-09-01 01:40:41,631 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 285 predicate places. [2023-09-01 01:40:41,631 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 324 transitions, 8184 flow [2023-09-01 01:40:41,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:41,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:40:41,631 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:40:41,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (110)] Forceful destruction successful, exit code 0 [2023-09-01 01:40:41,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:40:41,832 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:40:41,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:40:41,832 INFO L85 PathProgramCache]: Analyzing trace with hash 192944507, now seen corresponding path program 4 times [2023-09-01 01:40:41,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:40:41,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1590318792] [2023-09-01 01:40:41,833 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 01:40:41,833 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:40:41,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:40:41,834 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:40:41,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (111)] Waiting until timeout for monitored process [2023-09-01 01:40:42,315 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 01:40:42,315 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:40:42,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:40:42,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:40:42,634 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:40:42,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 249 treesize of output 89 [2023-09-01 01:40:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:40:42,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:40:46,913 INFO L321 Elim1Store]: treesize reduction 420, result has 66.7 percent of original size [2023-09-01 01:40:46,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 290 treesize of output 902 [2023-09-01 01:40:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:40:47,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:40:47,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1590318792] [2023-09-01 01:40:47,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1590318792] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 01:40:47,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 01:40:47,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-09-01 01:40:47,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215592632] [2023-09-01 01:40:47,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:40:47,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 01:40:47,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:40:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 01:40:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-09-01 01:40:55,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:40:55,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 324 transitions, 8184 flow. Second operand has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:40:55,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:40:55,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:40:55,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:41:01,848 INFO L130 PetriNetUnfolder]: 4291/7588 cut-off events. [2023-09-01 01:41:01,848 INFO L131 PetriNetUnfolder]: For 169637/169637 co-relation queries the response was YES. [2023-09-01 01:41:01,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53623 conditions, 7588 events. 4291/7588 cut-off events. For 169637/169637 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 49397 event pairs, 1289 based on Foata normal form. 60/7648 useless extension candidates. Maximal degree in co-relation 53505. Up to 2679 conditions per place. [2023-09-01 01:41:01,943 INFO L137 encePairwiseOnDemand]: 465/476 looper letters, 192 selfloop transitions, 188 changer transitions 0/380 dead transitions. [2023-09-01 01:41:01,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 380 transitions, 9401 flow [2023-09-01 01:41:01,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:41:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:41:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1792 transitions. [2023-09-01 01:41:01,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41830065359477125 [2023-09-01 01:41:01,946 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1792 transitions. [2023-09-01 01:41:01,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1792 transitions. [2023-09-01 01:41:01,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:41:01,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1792 transitions. [2023-09-01 01:41:01,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.11111111111111) internal successors, (1792), 9 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:01,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:01,949 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:01,949 INFO L175 Difference]: Start difference. First operand has 340 places, 324 transitions, 8184 flow. Second operand 9 states and 1792 transitions. [2023-09-01 01:41:01,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 380 transitions, 9401 flow [2023-09-01 01:41:02,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 380 transitions, 9128 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 01:41:02,735 INFO L231 Difference]: Finished difference. Result has 344 places, 333 transitions, 8587 flow [2023-09-01 01:41:02,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=7916, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8587, PETRI_PLACES=344, PETRI_TRANSITIONS=333} [2023-09-01 01:41:02,736 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 289 predicate places. [2023-09-01 01:41:02,736 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 333 transitions, 8587 flow [2023-09-01 01:41:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:02,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:41:02,736 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:41:02,746 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (111)] Ended with exit code 0 [2023-09-01 01:41:02,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:41:02,937 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:41:02,937 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:41:02,937 INFO L85 PathProgramCache]: Analyzing trace with hash -782987161, now seen corresponding path program 5 times [2023-09-01 01:41:02,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:41:02,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1850280678] [2023-09-01 01:41:02,938 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 01:41:02,938 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:41:02,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:41:02,939 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:41:02,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2023-09-01 01:41:03,527 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-09-01 01:41:03,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:41:03,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 01:41:03,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:41:03,731 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:41:03,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 73 [2023-09-01 01:41:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:41:03,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:41:08,044 INFO L321 Elim1Store]: treesize reduction 506, result has 65.5 percent of original size [2023-09-01 01:41:08,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 257 treesize of output 1005 [2023-09-01 01:41:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:41:08,320 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:41:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1850280678] [2023-09-01 01:41:08,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1850280678] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 01:41:08,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 01:41:08,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2023-09-01 01:41:08,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942464550] [2023-09-01 01:41:08,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:41:08,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 01:41:08,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:41:08,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 01:41:08,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-09-01 01:41:11,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 476 [2023-09-01 01:41:11,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 333 transitions, 8587 flow. Second operand has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:11,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:41:11,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 476 [2023-09-01 01:41:11,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:41:15,310 INFO L130 PetriNetUnfolder]: 4375/7732 cut-off events. [2023-09-01 01:41:15,310 INFO L131 PetriNetUnfolder]: For 182108/182108 co-relation queries the response was YES. [2023-09-01 01:41:15,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57002 conditions, 7732 events. 4375/7732 cut-off events. For 182108/182108 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 50648 event pairs, 1608 based on Foata normal form. 60/7792 useless extension candidates. Maximal degree in co-relation 56882. Up to 3234 conditions per place. [2023-09-01 01:41:15,400 INFO L137 encePairwiseOnDemand]: 468/476 looper letters, 180 selfloop transitions, 191 changer transitions 0/371 dead transitions. [2023-09-01 01:41:15,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 371 transitions, 9653 flow [2023-09-01 01:41:15,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 01:41:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 01:41:15,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1617 transitions. [2023-09-01 01:41:15,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42463235294117646 [2023-09-01 01:41:15,402 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1617 transitions. [2023-09-01 01:41:15,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1617 transitions. [2023-09-01 01:41:15,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:41:15,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1617 transitions. [2023-09-01 01:41:15,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 202.125) internal successors, (1617), 8 states have internal predecessors, (1617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:15,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:15,405 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 476.0) internal successors, (4284), 9 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:15,405 INFO L175 Difference]: Start difference. First operand has 344 places, 333 transitions, 8587 flow. Second operand 8 states and 1617 transitions. [2023-09-01 01:41:15,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 371 transitions, 9653 flow [2023-09-01 01:41:16,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 371 transitions, 9412 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-09-01 01:41:16,424 INFO L231 Difference]: Finished difference. Result has 347 places, 336 transitions, 8881 flow [2023-09-01 01:41:16,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=8349, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=8881, PETRI_PLACES=347, PETRI_TRANSITIONS=336} [2023-09-01 01:41:16,425 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 292 predicate places. [2023-09-01 01:41:16,425 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 336 transitions, 8881 flow [2023-09-01 01:41:16,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 196.14285714285714) internal successors, (1373), 7 states have internal predecessors, (1373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:16,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:41:16,425 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:41:16,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2023-09-01 01:41:16,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:41:16,626 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:41:16,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:41:16,626 INFO L85 PathProgramCache]: Analyzing trace with hash -46015061, now seen corresponding path program 6 times [2023-09-01 01:41:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:41:16,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676493445] [2023-09-01 01:41:16,627 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 01:41:16,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:41:16,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:41:16,627 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:41:16,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (113)] Waiting until timeout for monitored process [2023-09-01 01:41:17,254 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 01:41:17,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:41:17,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 01:41:17,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:41:17,558 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:41:17,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 73 [2023-09-01 01:41:17,577 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:41:17,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:41:21,831 INFO L321 Elim1Store]: treesize reduction 420, result has 66.7 percent of original size [2023-09-01 01:41:21,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 290 treesize of output 902 [2023-09-01 01:41:22,224 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:41:22,224 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 01:41:22,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676493445] [2023-09-01 01:41:22,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676493445] provided 1 perfect and 1 imperfect interpolant sequences [2023-09-01 01:41:22,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-09-01 01:41:22,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 18 [2023-09-01 01:41:22,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726856305] [2023-09-01 01:41:22,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:41:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 01:41:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 01:41:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 01:41:22,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2023-09-01 01:41:29,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 476 [2023-09-01 01:41:29,480 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 336 transitions, 8881 flow. Second operand has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:29,480 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:41:29,480 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 476 [2023-09-01 01:41:29,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:41:36,606 INFO L130 PetriNetUnfolder]: 4413/7748 cut-off events. [2023-09-01 01:41:36,606 INFO L131 PetriNetUnfolder]: For 198381/198381 co-relation queries the response was YES. [2023-09-01 01:41:36,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58932 conditions, 7748 events. 4413/7748 cut-off events. For 198381/198381 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 50476 event pairs, 1054 based on Foata normal form. 60/7808 useless extension candidates. Maximal degree in co-relation 58811. Up to 2787 conditions per place. [2023-09-01 01:41:36,690 INFO L137 encePairwiseOnDemand]: 466/476 looper letters, 204 selfloop transitions, 192 changer transitions 4/400 dead transitions. [2023-09-01 01:41:36,690 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 400 transitions, 10314 flow [2023-09-01 01:41:36,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 01:41:36,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 01:41:36,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1798 transitions. [2023-09-01 01:41:36,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197012138188609 [2023-09-01 01:41:36,693 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1798 transitions. [2023-09-01 01:41:36,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1798 transitions. [2023-09-01 01:41:36,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:41:36,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1798 transitions. [2023-09-01 01:41:36,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 199.77777777777777) internal successors, (1798), 9 states have internal predecessors, (1798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:36,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:36,697 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 476.0) internal successors, (4760), 10 states have internal predecessors, (4760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:36,697 INFO L175 Difference]: Start difference. First operand has 347 places, 336 transitions, 8881 flow. Second operand 9 states and 1798 transitions. [2023-09-01 01:41:36,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 400 transitions, 10314 flow [2023-09-01 01:41:37,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 400 transitions, 9960 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 01:41:37,936 INFO L231 Difference]: Finished difference. Result has 351 places, 346 transitions, 9265 flow [2023-09-01 01:41:37,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=476, PETRI_DIFFERENCE_MINUEND_FLOW=8535, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=180, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9265, PETRI_PLACES=351, PETRI_TRANSITIONS=346} [2023-09-01 01:41:37,937 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 296 predicate places. [2023-09-01 01:41:37,937 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 346 transitions, 9265 flow [2023-09-01 01:41:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 193.44444444444446) internal successors, (1741), 9 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:41:37,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:41:37,937 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:41:37,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (113)] Ended with exit code 0 [2023-09-01 01:41:38,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:41:38,138 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-09-01 01:41:38,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:41:38,138 INFO L85 PathProgramCache]: Analyzing trace with hash 828293677, now seen corresponding path program 7 times [2023-09-01 01:41:38,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 01:41:38,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1154279013] [2023-09-01 01:41:38,138 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 01:41:38,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 01:41:38,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 01:41:38,139 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-09-01 01:41:38,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (114)] Waiting until timeout for monitored process [2023-09-01 01:41:38,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:41:38,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 01:41:38,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:41:38,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 37 [2023-09-01 01:41:38,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-09-01 01:41:39,039 INFO L321 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2023-09-01 01:41:39,040 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 201 treesize of output 73 [2023-09-01 01:41:39,058 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-09-01 01:41:39,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:41:39,629 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7787 (Array (_ BitVec 32) (_ BitVec 8))) (~scoreB~0.base (_ BitVec 32))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_7787))) (let ((.cse2 (select .cse5 ~scoreB~0.base))) (let ((.cse0 (concat (concat (concat (select .cse2 (bvadd (_ bv3 32) c_~scoreB~0.offset)) (select .cse2 (bvadd (_ bv2 32) c_~scoreB~0.offset))) (select .cse2 (bvadd (_ bv1 32) c_~scoreB~0.offset))) (select .cse2 c_~scoreB~0.offset))) (.cse1 (let ((.cse4 (select .cse5 c_~scoreA~0.base))) (concat (concat (concat (select .cse4 (bvadd (_ bv3 32) c_~scoreA~0.offset)) (select .cse4 (bvadd (_ bv2 32) c_~scoreA~0.offset))) (select .cse4 (bvadd c_~scoreA~0.offset (_ bv1 32)))) (select .cse4 c_~scoreA~0.offset))))) (or (bvsgt .cse0 .cse1) (not (bvsgt |c_thread1Thread1of1ForFork0_#t~mem3#1| (let ((.cse3 (bvmul (_ bv4 32) |c_thread1Thread1of1ForFork0_~i~0#1|))) (concat (concat (concat (select .cse2 (bvadd (_ bv3 32) .cse3 c_~scoreB~0.offset)) (select .cse2 (bvadd (_ bv2 32) .cse3 c_~scoreB~0.offset))) (select .cse2 (bvadd .cse3 (_ bv1 32) c_~scoreB~0.offset))) (select .cse2 (bvadd .cse3 c_~scoreB~0.offset)))))) (bvslt .cse0 .cse1)))))) is different from false [2023-09-01 01:41:45,940 WARN L222 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 362 DAG size of output: 281 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-09-01 01:41:45,941 INFO L321 Elim1Store]: treesize reduction 264, result has 79.1 percent of original size [2023-09-01 01:41:45,942 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 120 case distinctions, treesize of input 641 treesize of output 1356 [2023-09-01 01:41:46,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,034 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,034 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,052 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,056 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,113 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,114 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,120 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,124 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,131 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,134 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,142 INFO L173 IndexEqualityManager]: detected equality via solver [2023-09-01 01:41:46,142 INFO L217 Elim1Store]: Index analysis took 120 ms [2023-09-01 01:41:46,978 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 01:41:46,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 12 select indices, 12 select index equivalence classes, 30 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 36 case distinctions, treesize of input 360 treesize of output 623 Killed by 15