./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/unroll-cond-5.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/unroll-cond-5.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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --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 04:23:17,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:23:17,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:23:17,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:23:17,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:23:17,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:23:17,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:23:17,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:23:17,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:23:17,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:23:17,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:23:17,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:23:17,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:23:17,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:23:17,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:23:17,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:23:17,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:23:17,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:23:17,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:23:17,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:23:17,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:23:17,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:23:17,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:23:17,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:23:17,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:23:17,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:23:17,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:23:17,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:23:17,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:23:17,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:23:17,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:23:17,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:23:17,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:23:17,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:23:17,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:23:17,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:23:17,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:23:17,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:23:17,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:23:17,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:23:17,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:23:17,286 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 04:23:17,312 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:23:17,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:23:17,313 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:23:17,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:23:17,314 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:23:17,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:23:17,315 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:23:17,315 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:23:17,315 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:23:17,316 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:23:17,316 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:23:17,317 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:23:17,317 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:23:17,317 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:23:17,317 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:23:17,317 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 04:23:17,317 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 04:23:17,318 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 04:23:17,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:23:17,318 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 04:23:17,318 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:23:17,318 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:23:17,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:23:17,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:23:17,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:23:17,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:23:17,319 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:23:17,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:23:17,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:23:17,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:23:17,320 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:23:17,320 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:23:17,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:23:17,321 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:23:17,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:23:17,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:23:17,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:23:17,659 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:23:17,660 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:23:17,660 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:23:17,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-09-01 04:23:18,891 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:23:19,123 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:23:19,125 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-09-01 04:23:19,130 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d87d388ae/e80e409ade01423e9171b82070380845/FLAG7bf008cd8 [2023-09-01 04:23:19,141 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d87d388ae/e80e409ade01423e9171b82070380845 [2023-09-01 04:23:19,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:23:19,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:23:19,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:23:19,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:23:19,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:23:19,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:23:19" (1/1) ... [2023-09-01 04:23:19,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da4fa81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:19, skipping insertion in model container [2023-09-01 04:23:19,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:23:19" (1/1) ... [2023-09-01 04:23:19,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:23:19,175 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:23:19,296 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/unroll-cond-5.wvr.c[2975,2988] [2023-09-01 04:23:19,303 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:23:19,315 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 04:23:19,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2f4f4696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:19, skipping insertion in model container [2023-09-01 04:23:19,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:23:19,316 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 04:23:19,318 INFO L158 Benchmark]: Toolchain (without parser) took 172.99ms. Allocated memory is still 83.9MB. Free memory was 61.9MB in the beginning and 51.8MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 04:23:19,318 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 04:23:19,319 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.85ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 52.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 04:23:19,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 169.85ms. Allocated memory is still 83.9MB. Free memory was 61.7MB in the beginning and 52.0MB in the end (delta: 9.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 124]: 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/unroll-cond-5.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 b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 --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 04:23:20,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:23:20,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:23:20,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:23:20,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:23:20,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:23:20,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:23:20,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:23:20,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:23:20,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:23:20,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:23:20,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:23:20,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:23:20,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:23:20,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:23:20,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:23:20,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:23:21,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:23:21,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:23:21,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:23:21,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:23:21,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:23:21,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:23:21,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:23:21,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:23:21,028 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:23:21,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:23:21,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:23:21,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:23:21,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:23:21,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:23:21,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:23:21,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:23:21,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:23:21,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:23:21,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:23:21,042 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:23:21,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:23:21,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:23:21,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:23:21,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:23:21,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 04:23:21,083 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:23:21,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:23:21,085 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:23:21,085 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:23:21,086 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:23:21,086 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:23:21,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:23:21,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:23:21,087 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:23:21,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:23:21,088 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:23:21,088 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:23:21,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:23:21,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:23:21,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:23:21,089 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 04:23:21,089 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 04:23:21,089 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 04:23:21,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:23:21,089 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 04:23:21,090 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 04:23:21,090 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 04:23:21,090 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:23:21,090 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:23:21,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:23:21,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:23:21,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:23:21,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:23:21,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:23:21,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:23:21,092 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 04:23:21,092 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 04:23:21,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:23:21,092 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:23:21,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:23:21,093 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 04:23:21,093 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:23:21,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b2b2bb654bf56c4e17e833d277e8505998c0901a0fe529242a0e0db923034741 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:23:21,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:23:21,452 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:23:21,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:23:21,455 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:23:21,456 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:23:21,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-09-01 04:23:22,584 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:23:22,799 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:23:22,800 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-5.wvr.c [2023-09-01 04:23:22,813 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f99337f/46633b554c264ed2813169d156cdbba8/FLAG9fba13ef5 [2023-09-01 04:23:22,838 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7f99337f/46633b554c264ed2813169d156cdbba8 [2023-09-01 04:23:22,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:23:22,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:23:22,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:23:22,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:23:22,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:23:22,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:23:22" (1/1) ... [2023-09-01 04:23:22,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31212e06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:22, skipping insertion in model container [2023-09-01 04:23:22,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:23:22" (1/1) ... [2023-09-01 04:23:22,857 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:23:22,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:23:23,084 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/unroll-cond-5.wvr.c[2975,2988] [2023-09-01 04:23:23,098 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:23:23,113 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 04:23:23,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:23:23,150 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/unroll-cond-5.wvr.c[2975,2988] [2023-09-01 04:23:23,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:23:23,166 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:23:23,203 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/unroll-cond-5.wvr.c[2975,2988] [2023-09-01 04:23:23,209 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:23:23,221 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:23:23,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23 WrapperNode [2023-09-01 04:23:23,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:23:23,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:23:23,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:23:23,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:23:23,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,282 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 205 [2023-09-01 04:23:23,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:23:23,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:23:23,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:23:23,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:23:23,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,325 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:23:23,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:23:23,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:23:23,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:23:23,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (1/1) ... [2023-09-01 04:23:23,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:23:23,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:23:23,375 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 04:23:23,403 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 04:23:23,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 04:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 04:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 04:23:23,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 04:23:23,421 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 04:23:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 04:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 04:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:23:23,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:23:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 04:23:23,424 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 04:23:23,549 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:23:23,550 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:23:24,174 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:23:24,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:23:24,183 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 04:23:24,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:23:24 BoogieIcfgContainer [2023-09-01 04:23:24,185 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:23:24,187 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:23:24,187 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:23:24,190 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:23:24,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:23:22" (1/3) ... [2023-09-01 04:23:24,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b302924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:23:24, skipping insertion in model container [2023-09-01 04:23:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:23:23" (2/3) ... [2023-09-01 04:23:24,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b302924 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:23:24, skipping insertion in model container [2023-09-01 04:23:24,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:23:24" (3/3) ... [2023-09-01 04:23:24,192 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-5.wvr.c [2023-09-01 04:23:24,214 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:23:24,214 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-09-01 04:23:24,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:23:24,358 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 04:23:24,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 282 transitions, 580 flow [2023-09-01 04:23:24,523 INFO L130 PetriNetUnfolder]: 24/280 cut-off events. [2023-09-01 04:23:24,524 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:23:24,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 280 events. 24/280 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 662 event pairs, 0 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-09-01 04:23:24,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 282 transitions, 580 flow [2023-09-01 04:23:24,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 259 places, 276 transitions, 564 flow [2023-09-01 04:23:24,546 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:23:24,557 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 259 places, 276 transitions, 564 flow [2023-09-01 04:23:24,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 259 places, 276 transitions, 564 flow [2023-09-01 04:23:24,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 259 places, 276 transitions, 564 flow [2023-09-01 04:23:24,610 INFO L130 PetriNetUnfolder]: 24/276 cut-off events. [2023-09-01 04:23:24,610 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:23:24,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 276 events. 24/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 654 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 185. Up to 2 conditions per place. [2023-09-01 04:23:24,620 INFO L119 LiptonReduction]: Number of co-enabled transitions 9784 [2023-09-01 04:24:20,536 INFO L134 LiptonReduction]: Checked pairs total: 9546 [2023-09-01 04:24:20,536 INFO L136 LiptonReduction]: Total number of compositions: 338 [2023-09-01 04:24:20,548 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 04:24:20,553 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;@2a9e316c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:24:20,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2023-09-01 04:24:20,557 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-09-01 04:24:20,557 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:24:20,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:20,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 04:24:20,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:20,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash 38306, now seen corresponding path program 1 times [2023-09-01 04:24:20,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:20,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750087353] [2023-09-01 04:24:20,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:20,574 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 04:24:20,574 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:20,581 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 04:24:20,591 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 04:24:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:20,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:24:20,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:20,923 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:24:20,924 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 14 treesize of output 29 [2023-09-01 04:24:20,979 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 04:24:20,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:20,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:20,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750087353] [2023-09-01 04:24:20,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750087353] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:20,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:20,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:24:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534748557] [2023-09-01 04:24:20,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:24:20,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:24:21,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:24:21,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 620 [2023-09-01 04:24:21,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 48 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:21,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:21,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 620 [2023-09-01 04:24:21,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:22,853 INFO L130 PetriNetUnfolder]: 2313/3184 cut-off events. [2023-09-01 04:24:22,853 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-09-01 04:24:22,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6420 conditions, 3184 events. 2313/3184 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 16964 event pairs, 1132 based on Foata normal form. 0/620 useless extension candidates. Maximal degree in co-relation 2778. Up to 1588 conditions per place. [2023-09-01 04:24:22,870 INFO L137 encePairwiseOnDemand]: 612/620 looper letters, 78 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2023-09-01 04:24:22,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 348 flow [2023-09-01 04:24:22,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:24:22,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:24:22,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 856 transitions. [2023-09-01 04:24:22,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46021505376344085 [2023-09-01 04:24:22,886 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 856 transitions. [2023-09-01 04:24:22,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 856 transitions. [2023-09-01 04:24:22,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:22,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 856 transitions. [2023-09-01 04:24:22,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 285.3333333333333) internal successors, (856), 3 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:22,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:22,902 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:22,904 INFO L175 Difference]: Start difference. First operand has 52 places, 48 transitions, 108 flow. Second operand 3 states and 856 transitions. [2023-09-01 04:24:22,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 348 flow [2023-09-01 04:24:22,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 82 transitions, 332 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 04:24:22,912 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 102 flow [2023-09-01 04:24:22,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-09-01 04:24:22,917 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-09-01 04:24:22,917 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 102 flow [2023-09-01 04:24:22,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:22,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:22,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 04:24:22,936 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 04:24:23,136 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 04:24:23,137 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:23,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash 38391, now seen corresponding path program 1 times [2023-09-01 04:24:23,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:23,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [990599381] [2023-09-01 04:24:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:23,139 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 04:24:23,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:23,140 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 04:24:23,144 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 04:24:23,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:23,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 04:24:23,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:23,222 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 04:24:23,223 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:23,223 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:23,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [990599381] [2023-09-01 04:24:23,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [990599381] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:23,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:23,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:24:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680805788] [2023-09-01 04:24:23,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:23,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:24:23,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:23,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:24:23,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:24:23,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 256 out of 620 [2023-09-01 04:24:23,294 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:23,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:23,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 256 of 620 [2023-09-01 04:24:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:24,059 INFO L130 PetriNetUnfolder]: 1157/1595 cut-off events. [2023-09-01 04:24:24,059 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:24:24,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3199 conditions, 1595 events. 1157/1595 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 7781 event pairs, 566 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 3186. Up to 1588 conditions per place. [2023-09-01 04:24:24,067 INFO L137 encePairwiseOnDemand]: 615/620 looper letters, 41 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-09-01 04:24:24,068 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 190 flow [2023-09-01 04:24:24,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:24:24,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:24:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 814 transitions. [2023-09-01 04:24:24,071 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4376344086021505 [2023-09-01 04:24:24,071 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 814 transitions. [2023-09-01 04:24:24,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 814 transitions. [2023-09-01 04:24:24,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:24,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 814 transitions. [2023-09-01 04:24:24,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 271.3333333333333) internal successors, (814), 3 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:24,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:24,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:24,079 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 102 flow. Second operand 3 states and 814 transitions. [2023-09-01 04:24:24,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 190 flow [2023-09-01 04:24:24,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 188 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:24:24,081 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 112 flow [2023-09-01 04:24:24,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-09-01 04:24:24,082 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-09-01 04:24:24,083 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 112 flow [2023-09-01 04:24:24,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 256.6666666666667) internal successors, (770), 3 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:24,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:24,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-09-01 04:24:24,100 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 (3)] Forceful destruction successful, exit code 0 [2023-09-01 04:24:24,293 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 04:24:24,294 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:24,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:24,297 INFO L85 PathProgramCache]: Analyzing trace with hash 38305, now seen corresponding path program 1 times [2023-09-01 04:24:24,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:24,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [921856291] [2023-09-01 04:24:24,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:24,298 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 04:24:24,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:24,299 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 04:24:24,302 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 (4)] Waiting until timeout for monitored process [2023-09-01 04:24:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:24,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 04:24:24,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:24,399 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 04:24:24,399 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 04:24:24,419 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 04:24:24,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:24,419 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:24,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [921856291] [2023-09-01 04:24:24,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [921856291] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:24,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:24,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:24:24,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872548887] [2023-09-01 04:24:24,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:24,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:24:24,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:24,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:24:24,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:24:24,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 620 [2023-09-01 04:24:24,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:24,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:24,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 620 [2023-09-01 04:24:24,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:25,150 INFO L130 PetriNetUnfolder]: 1157/1593 cut-off events. [2023-09-01 04:24:25,150 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 04:24:25,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3201 conditions, 1593 events. 1157/1593 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 301. Compared 7660 event pairs, 566 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 3187. Up to 1587 conditions per place. [2023-09-01 04:24:25,159 INFO L137 encePairwiseOnDemand]: 618/620 looper letters, 40 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 04:24:25,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 43 transitions, 192 flow [2023-09-01 04:24:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:24:25,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:24:25,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-09-01 04:24:25,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43172043010752686 [2023-09-01 04:24:25,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-09-01 04:24:25,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-09-01 04:24:25,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:25,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-09-01 04:24:25,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:25,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:25,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:25,169 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 112 flow. Second operand 3 states and 803 transitions. [2023-09-01 04:24:25,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 43 transitions, 192 flow [2023-09-01 04:24:25,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 186 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 04:24:25,171 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 106 flow [2023-09-01 04:24:25,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-09-01 04:24:25,172 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-09-01 04:24:25,172 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 106 flow [2023-09-01 04:24:25,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:25,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:24:25,187 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 04:24:25,382 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 04:24:25,382 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:25,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:25,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1190173, now seen corresponding path program 1 times [2023-09-01 04:24:25,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:25,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1778363663] [2023-09-01 04:24:25,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:25,384 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 04:24:25,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:25,385 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 04:24:25,388 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 04:24:25,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:25,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2023-09-01 04:24:25,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:25,524 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:24:25,525 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 14 treesize of output 29 [2023-09-01 04:24:25,585 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 04:24:25,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:25,778 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 04:24:25,779 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:25,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1778363663] [2023-09-01 04:24:25,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1778363663] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:25,779 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:25,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-09-01 04:24:25,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671065797] [2023-09-01 04:24:25,779 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 04:24:25,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 04:24:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 04:24:26,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 620 [2023-09-01 04:24:26,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 106 flow. Second operand has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:26,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:26,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 620 [2023-09-01 04:24:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:28,130 INFO L130 PetriNetUnfolder]: 2319/3191 cut-off events. [2023-09-01 04:24:28,130 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:24:28,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6407 conditions, 3191 events. 2319/3191 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 17116 event pairs, 1132 based on Foata normal form. 0/627 useless extension candidates. Maximal degree in co-relation 6398. Up to 1590 conditions per place. [2023-09-01 04:24:28,146 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 76 selfloop transitions, 11 changer transitions 0/89 dead transitions. [2023-09-01 04:24:28,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 89 transitions, 400 flow [2023-09-01 04:24:28,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 04:24:28,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 04:24:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1584 transitions. [2023-09-01 04:24:28,152 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258064516129032 [2023-09-01 04:24:28,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1584 transitions. [2023-09-01 04:24:28,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1584 transitions. [2023-09-01 04:24:28,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:28,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1584 transitions. [2023-09-01 04:24:28,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 264.0) internal successors, (1584), 6 states have internal predecessors, (1584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:28,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:28,165 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 620.0) internal successors, (4340), 7 states have internal predecessors, (4340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:28,165 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 106 flow. Second operand 6 states and 1584 transitions. [2023-09-01 04:24:28,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 89 transitions, 400 flow [2023-09-01 04:24:28,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 89 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:24:28,168 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 203 flow [2023-09-01 04:24:28,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-09-01 04:24:28,169 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-09-01 04:24:28,169 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 203 flow [2023-09-01 04:24:28,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 250.0) internal successors, (1500), 6 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:28,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:28,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:24:28,178 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 04:24:28,374 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 04:24:28,375 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:28,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:28,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1190258, now seen corresponding path program 1 times [2023-09-01 04:24:28,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:28,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813294562] [2023-09-01 04:24:28,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:28,376 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 04:24:28,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:28,377 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 04:24:28,381 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 04:24:28,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:28,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 04:24:28,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:28,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 04:24:28,527 INFO L321 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2023-09-01 04:24:28,528 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 2 case distinctions, treesize of input 14 treesize of output 26 [2023-09-01 04:24:28,540 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 04:24:28,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:28,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:28,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:28,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813294562] [2023-09-01 04:24:28,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813294562] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:28,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:28,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:24:28,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104299446] [2023-09-01 04:24:28,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:24:28,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:28,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:24:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:24:28,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 620 [2023-09-01 04:24:28,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:28,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:28,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 620 [2023-09-01 04:24:28,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:29,482 INFO L130 PetriNetUnfolder]: 1735/2435 cut-off events. [2023-09-01 04:24:29,483 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 04:24:29,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 2435 events. 1735/2435 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 12965 event pairs, 846 based on Foata normal form. 0/535 useless extension candidates. Maximal degree in co-relation 4909. Up to 2423 conditions per place. [2023-09-01 04:24:29,499 INFO L137 encePairwiseOnDemand]: 617/620 looper letters, 45 selfloop transitions, 1 changer transitions 0/48 dead transitions. [2023-09-01 04:24:29,500 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 48 transitions, 269 flow [2023-09-01 04:24:29,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:24:29,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:24:29,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 802 transitions. [2023-09-01 04:24:29,503 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311827956989247 [2023-09-01 04:24:29,503 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 802 transitions. [2023-09-01 04:24:29,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 802 transitions. [2023-09-01 04:24:29,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:29,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 802 transitions. [2023-09-01 04:24:29,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.3333333333333) internal successors, (802), 3 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:29,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:29,512 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:29,512 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 203 flow. Second operand 3 states and 802 transitions. [2023-09-01 04:24:29,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 48 transitions, 269 flow [2023-09-01 04:24:29,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 251 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 04:24:29,516 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 161 flow [2023-09-01 04:24:29,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-09-01 04:24:29,518 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-09-01 04:24:29,519 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 161 flow [2023-09-01 04:24:29,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:29,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:29,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 04:24:29,531 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 04:24:29,729 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 04:24:29,729 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:29,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:29,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1190259, now seen corresponding path program 1 times [2023-09-01 04:24:29,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:29,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948122035] [2023-09-01 04:24:29,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:29,731 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 04:24:29,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:29,732 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 04:24:29,735 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 04:24:29,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:29,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 04:24:29,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:29,846 INFO L321 Elim1Store]: treesize reduction 46, result has 29.2 percent of original size [2023-09-01 04:24:29,846 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 3 case distinctions, treesize of input 22 treesize of output 33 [2023-09-01 04:24:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:29,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:29,867 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:29,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948122035] [2023-09-01 04:24:29,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948122035] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:29,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:29,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:24:29,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332821127] [2023-09-01 04:24:29,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:29,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:24:29,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:29,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:24:29,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:24:29,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 620 [2023-09-01 04:24:30,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:30,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:30,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 620 [2023-09-01 04:24:30,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:30,556 INFO L130 PetriNetUnfolder]: 1151/1679 cut-off events. [2023-09-01 04:24:30,556 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:24:30,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3394 conditions, 1679 events. 1151/1679 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 9009 event pairs, 560 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 3379. Up to 1667 conditions per place. [2023-09-01 04:24:30,563 INFO L137 encePairwiseOnDemand]: 617/620 looper letters, 41 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-09-01 04:24:30,563 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 223 flow [2023-09-01 04:24:30,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:24:30,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:24:30,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 791 transitions. [2023-09-01 04:24:30,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4252688172043011 [2023-09-01 04:24:30,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 791 transitions. [2023-09-01 04:24:30,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 791 transitions. [2023-09-01 04:24:30,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:30,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 791 transitions. [2023-09-01 04:24:30,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.6666666666667) internal successors, (791), 3 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:30,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:30,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:30,572 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 161 flow. Second operand 3 states and 791 transitions. [2023-09-01 04:24:30,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 223 flow [2023-09-01 04:24:30,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:24:30,574 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 140 flow [2023-09-01 04:24:30,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-09-01 04:24:30,575 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-09-01 04:24:30,575 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 140 flow [2023-09-01 04:24:30,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.0) internal successors, (756), 3 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:30,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:30,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:24:30,587 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 04:24:30,784 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 04:24:30,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:30,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:30,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1143863866, now seen corresponding path program 1 times [2023-09-01 04:24:30,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:30,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1997066110] [2023-09-01 04:24:30,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:30,785 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 04:24:30,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:30,786 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 04:24:30,788 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 04:24:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:30,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 04:24:30,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:30,893 INFO L321 Elim1Store]: treesize reduction 50, result has 23.1 percent of original size [2023-09-01 04:24:30,894 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 22 [2023-09-01 04:24:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:30,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:30,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:30,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1997066110] [2023-09-01 04:24:30,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1997066110] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:30,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:30,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 04:24:30,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926811424] [2023-09-01 04:24:30,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:30,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 04:24:30,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:30,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 04:24:30,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 04:24:31,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 620 [2023-09-01 04:24:31,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:31,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:31,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 620 [2023-09-01 04:24:31,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:31,521 INFO L130 PetriNetUnfolder]: 1073/1557 cut-off events. [2023-09-01 04:24:31,521 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:24:31,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3151 conditions, 1557 events. 1073/1557 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 8262 event pairs, 522 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 3135. Up to 1545 conditions per place. [2023-09-01 04:24:31,528 INFO L137 encePairwiseOnDemand]: 617/620 looper letters, 39 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 04:24:31,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 216 flow [2023-09-01 04:24:31,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 04:24:31,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 04:24:31,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 789 transitions. [2023-09-01 04:24:31,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4241935483870968 [2023-09-01 04:24:31,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 789 transitions. [2023-09-01 04:24:31,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 789 transitions. [2023-09-01 04:24:31,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:31,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 789 transitions. [2023-09-01 04:24:31,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:31,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:31,537 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 620.0) internal successors, (2480), 4 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:31,537 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 140 flow. Second operand 3 states and 789 transitions. [2023-09-01 04:24:31,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 216 flow [2023-09-01 04:24:31,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:24:31,539 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 137 flow [2023-09-01 04:24:31,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=137, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-09-01 04:24:31,540 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-09-01 04:24:31,540 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 137 flow [2023-09-01 04:24:31,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 252.66666666666666) internal successors, (758), 3 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:31,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:31,541 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 04:24:31,555 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 (8)] Forceful destruction successful, exit code 0 [2023-09-01 04:24:31,751 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 04:24:31,751 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:31,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:31,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1143863865, now seen corresponding path program 1 times [2023-09-01 04:24:31,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:31,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395991626] [2023-09-01 04:24:31,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:31,752 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 04:24:31,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:31,753 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 04:24:31,754 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 04:24:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:31,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 04:24:31,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:31,906 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:24:31,906 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 14 treesize of output 29 [2023-09-01 04:24:32,083 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 04:24:32,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:32,238 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 04:24:32,238 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395991626] [2023-09-01 04:24:32,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395991626] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:32,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 04:24:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117712977] [2023-09-01 04:24:32,239 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:24:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:24:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:24:33,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 620 [2023-09-01 04:24:33,380 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 137 flow. Second operand has 8 states, 8 states have (on average 246.25) internal successors, (1970), 8 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 04:24:33,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:33,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 620 [2023-09-01 04:24:33,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:34,702 INFO L130 PetriNetUnfolder]: 995/1435 cut-off events. [2023-09-01 04:24:34,702 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:24:34,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2908 conditions, 1435 events. 995/1435 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 7351 event pairs, 484 based on Foata normal form. 0/446 useless extension candidates. Maximal degree in co-relation 2891. Up to 714 conditions per place. [2023-09-01 04:24:34,709 INFO L137 encePairwiseOnDemand]: 616/620 looper letters, 64 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-09-01 04:24:34,709 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 335 flow [2023-09-01 04:24:34,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:24:34,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:24:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1292 transitions. [2023-09-01 04:24:34,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167741935483871 [2023-09-01 04:24:34,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1292 transitions. [2023-09-01 04:24:34,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1292 transitions. [2023-09-01 04:24:34,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:34,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1292 transitions. [2023-09-01 04:24:34,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 258.4) internal successors, (1292), 5 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:34,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:34,733 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:34,733 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 137 flow. Second operand 5 states and 1292 transitions. [2023-09-01 04:24:34,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 335 flow [2023-09-01 04:24:34,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 69 transitions, 334 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 04:24:34,735 INFO L231 Difference]: Finished difference. Result has 53 places, 40 transitions, 138 flow [2023-09-01 04:24:34,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=138, PETRI_PLACES=53, PETRI_TRANSITIONS=40} [2023-09-01 04:24:34,738 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-09-01 04:24:34,738 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 40 transitions, 138 flow [2023-09-01 04:24:34,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 246.25) internal successors, (1970), 8 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 04:24:34,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:34,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:24:34,754 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 04:24:34,949 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 04:24:34,949 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:34,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1100030081, now seen corresponding path program 1 times [2023-09-01 04:24:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168660990] [2023-09-01 04:24:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:34,950 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 04:24:34,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:34,955 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 04:24:34,956 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 04:24:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:35,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:24:35,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:35,046 INFO L321 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2023-09-01 04:24:35,047 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 04:24:35,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:24:35,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:24:35,074 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:35,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168660990] [2023-09-01 04:24:35,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168660990] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:24:35,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:24:35,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:24:35,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908106041] [2023-09-01 04:24:35,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:24:35,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:24:35,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:35,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:24:35,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:24:35,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 620 [2023-09-01 04:24:35,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 40 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:35,313 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:35,313 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 620 [2023-09-01 04:24:35,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:35,683 INFO L130 PetriNetUnfolder]: 555/823 cut-off events. [2023-09-01 04:24:35,683 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-09-01 04:24:35,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687 conditions, 823 events. 555/823 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 3964 event pairs, 266 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 1669. Up to 806 conditions per place. [2023-09-01 04:24:35,686 INFO L137 encePairwiseOnDemand]: 612/620 looper letters, 28 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-09-01 04:24:35,686 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 190 flow [2023-09-01 04:24:35,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:24:35,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:24:35,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 960 transitions. [2023-09-01 04:24:35,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2023-09-01 04:24:35,690 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 960 transitions. [2023-09-01 04:24:35,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 960 transitions. [2023-09-01 04:24:35,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:35,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 960 transitions. [2023-09-01 04:24:35,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.0) internal successors, (960), 4 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:35,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:35,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:35,696 INFO L175 Difference]: Start difference. First operand has 53 places, 40 transitions, 138 flow. Second operand 4 states and 960 transitions. [2023-09-01 04:24:35,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 190 flow [2023-09-01 04:24:35,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 34 transitions, 185 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 04:24:35,698 INFO L231 Difference]: Finished difference. Result has 47 places, 34 transitions, 129 flow [2023-09-01 04:24:35,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=47, PETRI_TRANSITIONS=34} [2023-09-01 04:24:35,698 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2023-09-01 04:24:35,699 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 34 transitions, 129 flow [2023-09-01 04:24:35,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 233.25) internal successors, (933), 4 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:35,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:35,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-09-01 04:24:35,711 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 (10)] Forceful destruction successful, exit code 0 [2023-09-01 04:24:35,909 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 04:24:35,909 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:35,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1100030079, now seen corresponding path program 1 times [2023-09-01 04:24:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:35,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [488905930] [2023-09-01 04:24:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:35,910 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 04:24:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:35,911 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 04:24:35,915 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 04:24:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:35,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-09-01 04:24:35,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:36,025 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 04:24:36,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:36,147 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 35 treesize of output 31 [2023-09-01 04:24:36,227 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 04:24:36,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:36,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [488905930] [2023-09-01 04:24:36,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [488905930] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:36,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:36,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 04:24:36,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563796243] [2023-09-01 04:24:36,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:36,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:24:36,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:24:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:24:37,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 620 [2023-09-01 04:24:37,781 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 34 transitions, 129 flow. Second operand has 8 states, 8 states have (on average 247.25) internal successors, (1978), 8 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:37,781 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:37,781 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 620 [2023-09-01 04:24:37,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:39,194 INFO L130 PetriNetUnfolder]: 713/1087 cut-off events. [2023-09-01 04:24:39,194 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 04:24:39,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1087 events. 713/1087 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 5537 event pairs, 200 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 2206. Up to 695 conditions per place. [2023-09-01 04:24:39,198 INFO L137 encePairwiseOnDemand]: 615/620 looper letters, 65 selfloop transitions, 9 changer transitions 0/76 dead transitions. [2023-09-01 04:24:39,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 76 transitions, 376 flow [2023-09-01 04:24:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 04:24:39,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 04:24:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1794 transitions. [2023-09-01 04:24:39,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4133640552995392 [2023-09-01 04:24:39,203 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1794 transitions. [2023-09-01 04:24:39,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1794 transitions. [2023-09-01 04:24:39,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:39,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1794 transitions. [2023-09-01 04:24:39,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 256.2857142857143) internal successors, (1794), 7 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:39,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:39,224 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 620.0) internal successors, (4960), 8 states have internal predecessors, (4960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:39,225 INFO L175 Difference]: Start difference. First operand has 47 places, 34 transitions, 129 flow. Second operand 7 states and 1794 transitions. [2023-09-01 04:24:39,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 76 transitions, 376 flow [2023-09-01 04:24:39,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 76 transitions, 370 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:24:39,226 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 167 flow [2023-09-01 04:24:39,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=167, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-09-01 04:24:39,228 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-09-01 04:24:39,228 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 167 flow [2023-09-01 04:24:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 247.25) internal successors, (1978), 8 states have internal predecessors, (1978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:39,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:39,229 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-09-01 04:24:39,239 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 04:24:39,438 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 04:24:39,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:39,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:39,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1099373666, now seen corresponding path program 2 times [2023-09-01 04:24:39,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:39,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669871307] [2023-09-01 04:24:39,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:24:39,439 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 04:24:39,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:39,440 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 04:24:39,441 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 04:24:39,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:24:39,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:24:39,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 04:24:39,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:39,549 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:24:39,549 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 14 treesize of output 29 [2023-09-01 04:24:39,681 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 04:24:39,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:40,155 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 04:24:40,155 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:40,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669871307] [2023-09-01 04:24:40,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669871307] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:40,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:40,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-09-01 04:24:40,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608115785] [2023-09-01 04:24:40,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:40,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-09-01 04:24:40,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:40,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-09-01 04:24:40,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-09-01 04:24:45,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 620 [2023-09-01 04:24:45,100 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 167 flow. Second operand has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:45,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:24:45,101 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 620 [2023-09-01 04:24:45,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:24:50,428 INFO L130 PetriNetUnfolder]: 2972/4640 cut-off events. [2023-09-01 04:24:50,428 INFO L131 PetriNetUnfolder]: For 1170/1170 co-relation queries the response was YES. [2023-09-01 04:24:50,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10502 conditions, 4640 events. 2972/4640 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 29991 event pairs, 1719 based on Foata normal form. 6/2481 useless extension candidates. Maximal degree in co-relation 10482. Up to 511 conditions per place. [2023-09-01 04:24:50,445 INFO L137 encePairwiseOnDemand]: 616/620 looper letters, 218 selfloop transitions, 12 changer transitions 0/232 dead transitions. [2023-09-01 04:24:50,445 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 232 transitions, 1190 flow [2023-09-01 04:24:50,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 04:24:50,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 04:24:50,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3227 transitions. [2023-09-01 04:24:50,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337365591397849 [2023-09-01 04:24:50,454 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3227 transitions. [2023-09-01 04:24:50,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3227 transitions. [2023-09-01 04:24:50,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:24:50,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3227 transitions. [2023-09-01 04:24:50,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 268.9166666666667) internal successors, (3227), 12 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:50,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:50,468 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:50,469 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 167 flow. Second operand 12 states and 3227 transitions. [2023-09-01 04:24:50,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 232 transitions, 1190 flow [2023-09-01 04:24:50,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 232 transitions, 1174 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-09-01 04:24:50,473 INFO L231 Difference]: Finished difference. Result has 68 places, 44 transitions, 253 flow [2023-09-01 04:24:50,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=253, PETRI_PLACES=68, PETRI_TRANSITIONS=44} [2023-09-01 04:24:50,474 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 16 predicate places. [2023-09-01 04:24:50,474 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 44 transitions, 253 flow [2023-09-01 04:24:50,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 251.0) internal successors, (3012), 12 states have internal predecessors, (3012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:24:50,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:24:50,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:24:50,488 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 (12)] Forceful destruction successful, exit code 0 [2023-09-01 04:24:50,685 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 04:24:50,685 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:24:50,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:24:50,686 INFO L85 PathProgramCache]: Analyzing trace with hash -258804763, now seen corresponding path program 1 times [2023-09-01 04:24:50,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:24:50,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1611847704] [2023-09-01 04:24:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:24:50,686 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 04:24:50,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:24:50,687 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 04:24:50,688 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 04:24:50,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:24:50,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 04:24:50,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:24:50,827 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:24:50,827 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 14 treesize of output 29 [2023-09-01 04:24:50,955 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 04:24:50,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:24:51,650 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 04:24:51,650 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:24:51,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1611847704] [2023-09-01 04:24:51,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1611847704] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:24:51,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:24:51,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-09-01 04:24:51,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357672132] [2023-09-01 04:24:51,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:24:51,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 04:24:51,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:24:51,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 04:24:51,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 04:25:00,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 620 [2023-09-01 04:25:00,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 246.5) internal successors, (1972), 8 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 04:25:00,507 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:00,507 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 620 [2023-09-01 04:25:00,507 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:04,307 INFO L130 PetriNetUnfolder]: 2153/3419 cut-off events. [2023-09-01 04:25:04,307 INFO L131 PetriNetUnfolder]: For 921/921 co-relation queries the response was YES. [2023-09-01 04:25:04,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7776 conditions, 3419 events. 2153/3419 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 300. Compared 21190 event pairs, 1236 based on Foata normal form. 21/1936 useless extension candidates. Maximal degree in co-relation 7749. Up to 3055 conditions per place. [2023-09-01 04:25:04,351 INFO L137 encePairwiseOnDemand]: 606/620 looper letters, 56 selfloop transitions, 11 changer transitions 0/69 dead transitions. [2023-09-01 04:25:04,351 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 69 transitions, 452 flow [2023-09-01 04:25:04,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 04:25:04,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 04:25:04,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2282 transitions. [2023-09-01 04:25:04,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089605734767025 [2023-09-01 04:25:04,358 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2282 transitions. [2023-09-01 04:25:04,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2282 transitions. [2023-09-01 04:25:04,359 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:04,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2282 transitions. [2023-09-01 04:25:04,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 253.55555555555554) internal successors, (2282), 9 states have internal predecessors, (2282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:04,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 620.0) internal successors, (6200), 10 states have internal predecessors, (6200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:04,369 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 620.0) internal successors, (6200), 10 states have internal predecessors, (6200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:04,369 INFO L175 Difference]: Start difference. First operand has 68 places, 44 transitions, 253 flow. Second operand 9 states and 2282 transitions. [2023-09-01 04:25:04,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 69 transitions, 452 flow [2023-09-01 04:25:04,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 427 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-09-01 04:25:04,373 INFO L231 Difference]: Finished difference. Result has 74 places, 44 transitions, 293 flow [2023-09-01 04:25:04,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=293, PETRI_PLACES=74, PETRI_TRANSITIONS=44} [2023-09-01 04:25:04,374 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2023-09-01 04:25:04,374 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 44 transitions, 293 flow [2023-09-01 04:25:04,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 246.5) internal successors, (1972), 8 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 04:25:04,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:04,375 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:04,387 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 (13)] Forceful destruction successful, exit code 0 [2023-09-01 04:25:04,584 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 04:25:04,585 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:04,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:04,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1138574166, now seen corresponding path program 2 times [2023-09-01 04:25:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1171721799] [2023-09-01 04:25:04,586 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:25:04,586 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 04:25:04,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:04,588 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 04:25:04,590 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 04:25:04,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 04:25:04,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:04,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 04:25:04,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:04,729 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:25:04,729 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 14 treesize of output 29 [2023-09-01 04:25:04,854 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-09-01 04:25:04,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:04,854 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1171721799] [2023-09-01 04:25:04,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1171721799] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:04,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:04,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 04:25:04,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228870785] [2023-09-01 04:25:04,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:04,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 04:25:04,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:04,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 04:25:04,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 04:25:05,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 251 out of 620 [2023-09-01 04:25:05,229 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 44 transitions, 293 flow. Second operand has 4 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:05,229 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:05,229 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 251 of 620 [2023-09-01 04:25:05,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:05,750 INFO L130 PetriNetUnfolder]: 515/977 cut-off events. [2023-09-01 04:25:05,750 INFO L131 PetriNetUnfolder]: For 955/955 co-relation queries the response was YES. [2023-09-01 04:25:05,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2262 conditions, 977 events. 515/977 cut-off events. For 955/955 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5377 event pairs, 270 based on Foata normal form. 138/899 useless extension candidates. Maximal degree in co-relation 2232. Up to 919 conditions per place. [2023-09-01 04:25:05,753 INFO L137 encePairwiseOnDemand]: 608/620 looper letters, 26 selfloop transitions, 6 changer transitions 0/34 dead transitions. [2023-09-01 04:25:05,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 34 transitions, 293 flow [2023-09-01 04:25:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 04:25:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 04:25:05,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1030 transitions. [2023-09-01 04:25:05,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153225806451613 [2023-09-01 04:25:05,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1030 transitions. [2023-09-01 04:25:05,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1030 transitions. [2023-09-01 04:25:05,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:05,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1030 transitions. [2023-09-01 04:25:05,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 257.5) internal successors, (1030), 4 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:05,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:05,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 620.0) internal successors, (3100), 5 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:05,761 INFO L175 Difference]: Start difference. First operand has 74 places, 44 transitions, 293 flow. Second operand 4 states and 1030 transitions. [2023-09-01 04:25:05,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 34 transitions, 293 flow [2023-09-01 04:25:05,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 34 transitions, 246 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-09-01 04:25:05,764 INFO L231 Difference]: Finished difference. Result has 55 places, 34 transitions, 194 flow [2023-09-01 04:25:05,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=194, PETRI_PLACES=55, PETRI_TRANSITIONS=34} [2023-09-01 04:25:05,765 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-09-01 04:25:05,765 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 34 transitions, 194 flow [2023-09-01 04:25:05,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.5) internal successors, (1010), 4 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:05,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:05,766 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-09-01 04:25:05,777 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 04:25:05,975 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 04:25:05,975 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:05,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1326886270, now seen corresponding path program 3 times [2023-09-01 04:25:05,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:05,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447807883] [2023-09-01 04:25:05,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:25:05,976 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 04:25:05,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:05,978 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 04:25:05,979 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 04:25:06,159 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 04:25:06,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:06,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 04:25:06,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:06,227 INFO L321 Elim1Store]: treesize reduction 37, result has 37.3 percent of original size [2023-09-01 04:25:06,227 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 14 treesize of output 29 [2023-09-01 04:25:06,567 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 04:25:06,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:25:08,774 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 04:25:08,775 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:08,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447807883] [2023-09-01 04:25:08,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447807883] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:25:08,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:25:08,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-09-01 04:25:08,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504034028] [2023-09-01 04:25:08,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:25:08,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 04:25:08,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:08,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 04:25:08,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-09-01 04:25:26,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 620 [2023-09-01 04:25:26,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 34 transitions, 194 flow. Second operand has 24 states, 24 states have (on average 250.0) internal successors, (6000), 24 states have internal predecessors, (6000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:26,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:26,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 620 [2023-09-01 04:25:26,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:43,964 INFO L130 PetriNetUnfolder]: 1199/2273 cut-off events. [2023-09-01 04:25:43,964 INFO L131 PetriNetUnfolder]: For 753/753 co-relation queries the response was YES. [2023-09-01 04:25:43,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 2273 events. 1199/2273 cut-off events. For 753/753 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 13353 event pairs, 630 based on Foata normal form. 12/1861 useless extension candidates. Maximal degree in co-relation 5014. Up to 504 conditions per place. [2023-09-01 04:25:43,973 INFO L137 encePairwiseOnDemand]: 616/620 looper letters, 295 selfloop transitions, 25 changer transitions 0/322 dead transitions. [2023-09-01 04:25:43,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 322 transitions, 1810 flow [2023-09-01 04:25:43,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 04:25:43,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 04:25:43,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 6536 transitions. [2023-09-01 04:25:43,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216774193548387 [2023-09-01 04:25:43,987 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 6536 transitions. [2023-09-01 04:25:43,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 6536 transitions. [2023-09-01 04:25:43,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:43,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 6536 transitions. [2023-09-01 04:25:44,001 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 261.44) internal successors, (6536), 25 states have internal predecessors, (6536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:44,018 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 620.0) internal successors, (16120), 26 states have internal predecessors, (16120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:44,021 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 620.0) internal successors, (16120), 26 states have internal predecessors, (16120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:44,021 INFO L175 Difference]: Start difference. First operand has 55 places, 34 transitions, 194 flow. Second operand 25 states and 6536 transitions. [2023-09-01 04:25:44,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 322 transitions, 1810 flow [2023-09-01 04:25:44,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 322 transitions, 1786 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 04:25:44,027 INFO L231 Difference]: Finished difference. Result has 78 places, 47 transitions, 330 flow [2023-09-01 04:25:44,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=330, PETRI_PLACES=78, PETRI_TRANSITIONS=47} [2023-09-01 04:25:44,074 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 26 predicate places. [2023-09-01 04:25:44,075 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 47 transitions, 330 flow [2023-09-01 04:25:44,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 250.0) internal successors, (6000), 24 states have internal predecessors, (6000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:44,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:44,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:44,088 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 04:25:44,277 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 04:25:44,277 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:44,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:44,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1178195579, now seen corresponding path program 1 times [2023-09-01 04:25:44,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:44,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1866858083] [2023-09-01 04:25:44,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:25:44,278 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 04:25:44,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:44,279 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 04:25:44,282 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 (16)] Waiting until timeout for monitored process [2023-09-01 04:25:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:25:44,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:25:44,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:44,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:44,450 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:44,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1866858083] [2023-09-01 04:25:44,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1866858083] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:44,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:44,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:25:44,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843168932] [2023-09-01 04:25:44,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:44,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:25:44,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:44,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:25:44,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:25:44,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 620 [2023-09-01 04:25:44,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 47 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:44,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:44,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 620 [2023-09-01 04:25:44,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:45,267 INFO L130 PetriNetUnfolder]: 1493/2798 cut-off events. [2023-09-01 04:25:45,267 INFO L131 PetriNetUnfolder]: For 370/370 co-relation queries the response was YES. [2023-09-01 04:25:45,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6295 conditions, 2798 events. 1493/2798 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 15690 event pairs, 504 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 6271. Up to 1560 conditions per place. [2023-09-01 04:25:45,276 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 62 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-09-01 04:25:45,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 68 transitions, 513 flow [2023-09-01 04:25:45,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:25:45,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:25:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1236 transitions. [2023-09-01 04:25:45,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3987096774193548 [2023-09-01 04:25:45,280 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1236 transitions. [2023-09-01 04:25:45,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1236 transitions. [2023-09-01 04:25:45,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:45,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1236 transitions. [2023-09-01 04:25:45,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 247.2) internal successors, (1236), 5 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:45,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:45,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:45,286 INFO L175 Difference]: Start difference. First operand has 78 places, 47 transitions, 330 flow. Second operand 5 states and 1236 transitions. [2023-09-01 04:25:45,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 68 transitions, 513 flow [2023-09-01 04:25:45,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 437 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-09-01 04:25:45,289 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 289 flow [2023-09-01 04:25:45,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=289, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-09-01 04:25:45,290 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2023-09-01 04:25:45,290 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 289 flow [2023-09-01 04:25:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 242.0) internal successors, (1210), 5 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:45,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:45,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:45,305 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 (16)] Ended with exit code 0 [2023-09-01 04:25:45,502 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 04:25:45,502 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:45,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:45,503 INFO L85 PathProgramCache]: Analyzing trace with hash -86607835, now seen corresponding path program 2 times [2023-09-01 04:25:45,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:45,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [60679169] [2023-09-01 04:25:45,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:25:45,504 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 04:25:45,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:45,504 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 04:25:45,505 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 04:25:45,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 04:25:45,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:45,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:25:45,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:45,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:45,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:45,691 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:45,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [60679169] [2023-09-01 04:25:45,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [60679169] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:45,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:45,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:25:45,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014467496] [2023-09-01 04:25:45,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:45,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:25:45,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:45,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:25:45,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:25:45,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 620 [2023-09-01 04:25:45,806 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 289 flow. Second operand has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:45,806 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:45,806 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 620 [2023-09-01 04:25:45,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:46,737 INFO L130 PetriNetUnfolder]: 2203/4127 cut-off events. [2023-09-01 04:25:46,737 INFO L131 PetriNetUnfolder]: For 3062/3062 co-relation queries the response was YES. [2023-09-01 04:25:46,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12239 conditions, 4127 events. 2203/4127 cut-off events. For 3062/3062 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 25114 event pairs, 840 based on Foata normal form. 40/3607 useless extension candidates. Maximal degree in co-relation 12218. Up to 2608 conditions per place. [2023-09-01 04:25:46,754 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 67 selfloop transitions, 8 changer transitions 0/75 dead transitions. [2023-09-01 04:25:46,754 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 75 transitions, 548 flow [2023-09-01 04:25:46,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:25:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:25:46,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1247 transitions. [2023-09-01 04:25:46,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40225806451612905 [2023-09-01 04:25:46,759 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1247 transitions. [2023-09-01 04:25:46,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1247 transitions. [2023-09-01 04:25:46,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:46,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1247 transitions. [2023-09-01 04:25:46,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.4) internal successors, (1247), 5 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:46,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:46,764 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:46,764 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 289 flow. Second operand 5 states and 1247 transitions. [2023-09-01 04:25:46,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 75 transitions, 548 flow [2023-09-01 04:25:46,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 75 transitions, 515 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-09-01 04:25:46,778 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 336 flow [2023-09-01 04:25:46,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=336, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2023-09-01 04:25:46,779 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 22 predicate places. [2023-09-01 04:25:46,779 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 336 flow [2023-09-01 04:25:46,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:46,780 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:46,780 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:46,788 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 04:25:46,980 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 04:25:46,981 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:46,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:46,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1995533091, now seen corresponding path program 3 times [2023-09-01 04:25:46,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:46,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563519473] [2023-09-01 04:25:46,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:25:46,982 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 04:25:46,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:46,983 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 04:25:46,984 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 04:25:47,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-09-01 04:25:47,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:47,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:25:47,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:47,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:47,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:47,154 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:47,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563519473] [2023-09-01 04:25:47,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563519473] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:47,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:47,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:25:47,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670705805] [2023-09-01 04:25:47,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:47,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:25:47,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:47,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:25:47,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:25:47,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 620 [2023-09-01 04:25:47,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 336 flow. Second operand has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:47,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:47,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 620 [2023-09-01 04:25:47,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:48,423 INFO L130 PetriNetUnfolder]: 2403/4447 cut-off events. [2023-09-01 04:25:48,423 INFO L131 PetriNetUnfolder]: For 6731/6731 co-relation queries the response was YES. [2023-09-01 04:25:48,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15880 conditions, 4447 events. 2403/4447 cut-off events. For 6731/6731 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 27171 event pairs, 880 based on Foata normal form. 80/4247 useless extension candidates. Maximal degree in co-relation 15857. Up to 2368 conditions per place. [2023-09-01 04:25:48,443 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 64 selfloop transitions, 15 changer transitions 0/79 dead transitions. [2023-09-01 04:25:48,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 79 transitions, 601 flow [2023-09-01 04:25:48,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:25:48,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:25:48,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1232 transitions. [2023-09-01 04:25:48,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39741935483870966 [2023-09-01 04:25:48,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1232 transitions. [2023-09-01 04:25:48,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1232 transitions. [2023-09-01 04:25:48,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:48,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1232 transitions. [2023-09-01 04:25:48,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.4) internal successors, (1232), 5 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:48,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:48,452 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:48,453 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 336 flow. Second operand 5 states and 1232 transitions. [2023-09-01 04:25:48,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 79 transitions, 601 flow [2023-09-01 04:25:48,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 79 transitions, 577 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 04:25:48,474 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 432 flow [2023-09-01 04:25:48,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=326, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-09-01 04:25:48,475 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 28 predicate places. [2023-09-01 04:25:48,475 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 432 flow [2023-09-01 04:25:48,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:48,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:48,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:48,491 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 (18)] Forceful destruction successful, exit code 0 [2023-09-01 04:25:48,687 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 04:25:48,687 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:48,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:48,688 INFO L85 PathProgramCache]: Analyzing trace with hash 333624601, now seen corresponding path program 4 times [2023-09-01 04:25:48,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:48,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [962728680] [2023-09-01 04:25:48,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:25:48,688 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 04:25:48,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:48,690 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 04:25:48,691 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 04:25:48,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:25:48,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:48,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:25:48,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:48,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:48,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:48,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:48,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [962728680] [2023-09-01 04:25:48,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [962728680] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:48,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:48,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:25:48,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38235320] [2023-09-01 04:25:48,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:48,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:25:48,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:48,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:25:48,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:25:48,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 620 [2023-09-01 04:25:48,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 432 flow. Second operand has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:48,984 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:48,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 620 [2023-09-01 04:25:48,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:50,078 INFO L130 PetriNetUnfolder]: 2323/4367 cut-off events. [2023-09-01 04:25:50,078 INFO L131 PetriNetUnfolder]: For 11618/11618 co-relation queries the response was YES. [2023-09-01 04:25:50,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17083 conditions, 4367 events. 2323/4367 cut-off events. For 11618/11618 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 26632 event pairs, 1000 based on Foata normal form. 80/4167 useless extension candidates. Maximal degree in co-relation 17057. Up to 3488 conditions per place. [2023-09-01 04:25:50,094 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 62 selfloop transitions, 16 changer transitions 0/78 dead transitions. [2023-09-01 04:25:50,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 78 transitions, 677 flow [2023-09-01 04:25:50,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:25:50,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:25:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1226 transitions. [2023-09-01 04:25:50,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39548387096774196 [2023-09-01 04:25:50,097 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1226 transitions. [2023-09-01 04:25:50,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1226 transitions. [2023-09-01 04:25:50,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:50,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1226 transitions. [2023-09-01 04:25:50,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:50,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:50,100 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:50,100 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 432 flow. Second operand 5 states and 1226 transitions. [2023-09-01 04:25:50,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 78 transitions, 677 flow [2023-09-01 04:25:50,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 78 transitions, 658 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 04:25:50,141 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 536 flow [2023-09-01 04:25:50,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=416, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=536, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2023-09-01 04:25:50,141 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 33 predicate places. [2023-09-01 04:25:50,141 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 536 flow [2023-09-01 04:25:50,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:50,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:50,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:50,156 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 (19)] Forceful destruction successful, exit code 0 [2023-09-01 04:25:50,353 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 04:25:50,353 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:50,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:50,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1933617035, now seen corresponding path program 5 times [2023-09-01 04:25:50,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:50,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593952007] [2023-09-01 04:25:50,354 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:25:50,355 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 04:25:50,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:50,356 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 04:25:50,359 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 04:25:50,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:25:50,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:50,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:25:50,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:50,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:50,586 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:50,586 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:50,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593952007] [2023-09-01 04:25:50,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593952007] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:50,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:50,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:25:50,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729488468] [2023-09-01 04:25:50,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:50,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:25:50,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:50,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:25:50,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:25:50,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 620 [2023-09-01 04:25:50,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 536 flow. Second operand has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:50,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:50,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 620 [2023-09-01 04:25:50,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:51,797 INFO L130 PetriNetUnfolder]: 2343/4427 cut-off events. [2023-09-01 04:25:51,797 INFO L131 PetriNetUnfolder]: For 14531/14531 co-relation queries the response was YES. [2023-09-01 04:25:51,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19325 conditions, 4427 events. 2343/4427 cut-off events. For 14531/14531 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 27412 event pairs, 760 based on Foata normal form. 40/4187 useless extension candidates. Maximal degree in co-relation 19297. Up to 2408 conditions per place. [2023-09-01 04:25:51,818 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 65 selfloop transitions, 19 changer transitions 0/84 dead transitions. [2023-09-01 04:25:51,819 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 84 transitions, 758 flow [2023-09-01 04:25:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:25:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:25:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1250 transitions. [2023-09-01 04:25:51,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2023-09-01 04:25:51,821 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1250 transitions. [2023-09-01 04:25:51,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1250 transitions. [2023-09-01 04:25:51,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:51,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1250 transitions. [2023-09-01 04:25:51,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:51,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:51,825 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:51,825 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 536 flow. Second operand 5 states and 1250 transitions. [2023-09-01 04:25:51,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 84 transitions, 758 flow [2023-09-01 04:25:51,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 702 flow, removed 16 selfloop flow, removed 2 redundant places. [2023-09-01 04:25:51,902 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 543 flow [2023-09-01 04:25:51,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=543, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2023-09-01 04:25:51,902 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2023-09-01 04:25:51,902 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 543 flow [2023-09-01 04:25:51,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:51,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:51,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:51,914 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 (20)] Ended with exit code 0 [2023-09-01 04:25:52,103 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 04:25:52,103 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:52,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:52,104 INFO L85 PathProgramCache]: Analyzing trace with hash -27143235, now seen corresponding path program 6 times [2023-09-01 04:25:52,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:52,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94495194] [2023-09-01 04:25:52,104 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:25:52,104 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 04:25:52,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:52,105 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 04:25:52,107 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 04:25:52,213 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-09-01 04:25:52,213 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:52,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 04:25:52,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:52,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 04:25:52,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 04:25:52,292 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:52,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94495194] [2023-09-01 04:25:52,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94495194] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 04:25:52,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 04:25:52,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 04:25:52,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192434633] [2023-09-01 04:25:52,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 04:25:52,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 04:25:52,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:52,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 04:25:52,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-09-01 04:25:52,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 242 out of 620 [2023-09-01 04:25:52,413 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 543 flow. Second operand has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:52,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:52,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 242 of 620 [2023-09-01 04:25:52,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:53,355 INFO L130 PetriNetUnfolder]: 2323/4287 cut-off events. [2023-09-01 04:25:53,355 INFO L131 PetriNetUnfolder]: For 14559/14559 co-relation queries the response was YES. [2023-09-01 04:25:53,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18046 conditions, 4287 events. 2323/4287 cut-off events. For 14559/14559 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 25444 event pairs, 980 based on Foata normal form. 40/4047 useless extension candidates. Maximal degree in co-relation 18017. Up to 3348 conditions per place. [2023-09-01 04:25:53,378 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 65 selfloop transitions, 17 changer transitions 0/82 dead transitions. [2023-09-01 04:25:53,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 82 transitions, 755 flow [2023-09-01 04:25:53,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 04:25:53,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 04:25:53,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1246 transitions. [2023-09-01 04:25:53,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019354838709677 [2023-09-01 04:25:53,381 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1246 transitions. [2023-09-01 04:25:53,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1246 transitions. [2023-09-01 04:25:53,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:53,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1246 transitions. [2023-09-01 04:25:53,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 249.2) internal successors, (1246), 5 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:53,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:53,384 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 620.0) internal successors, (3720), 6 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:53,385 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 543 flow. Second operand 5 states and 1246 transitions. [2023-09-01 04:25:53,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 82 transitions, 755 flow [2023-09-01 04:25:53,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 82 transitions, 705 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 04:25:53,442 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 560 flow [2023-09-01 04:25:53,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2023-09-01 04:25:53,442 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 38 predicate places. [2023-09-01 04:25:53,443 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 560 flow [2023-09-01 04:25:53,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 245.0) internal successors, (1225), 5 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:53,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:53,443 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:53,454 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 04:25:53,654 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 04:25:53,654 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:53,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:53,655 INFO L85 PathProgramCache]: Analyzing trace with hash 2095420173, now seen corresponding path program 1 times [2023-09-01 04:25:53,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:53,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1774877460] [2023-09-01 04:25:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:25:53,655 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 04:25:53,655 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:53,656 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 04:25:53,658 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 04:25:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:25:53,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:25:53,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:53,862 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 04:25:53,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:25:53,980 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 04:25:53,981 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:53,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1774877460] [2023-09-01 04:25:53,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1774877460] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:25:53,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:25:53,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:25:53,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661951827] [2023-09-01 04:25:53,981 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:25:53,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:25:53,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:53,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:25:53,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:25:54,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 239 out of 620 [2023-09-01 04:25:54,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 560 flow. Second operand has 10 states, 10 states have (on average 241.4) internal successors, (2414), 10 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:54,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:54,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 239 of 620 [2023-09-01 04:25:54,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:25:57,650 INFO L130 PetriNetUnfolder]: 5263/9907 cut-off events. [2023-09-01 04:25:57,650 INFO L131 PetriNetUnfolder]: For 28351/28351 co-relation queries the response was YES. [2023-09-01 04:25:57,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38167 conditions, 9907 events. 5263/9907 cut-off events. For 28351/28351 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 71576 event pairs, 640 based on Foata normal form. 240/9507 useless extension candidates. Maximal degree in co-relation 38137. Up to 3121 conditions per place. [2023-09-01 04:25:57,692 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 143 selfloop transitions, 48 changer transitions 0/191 dead transitions. [2023-09-01 04:25:57,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 191 transitions, 1483 flow [2023-09-01 04:25:57,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 04:25:57,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 04:25:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 4684 transitions. [2023-09-01 04:25:57,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3976230899830221 [2023-09-01 04:25:57,697 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 4684 transitions. [2023-09-01 04:25:57,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 4684 transitions. [2023-09-01 04:25:57,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:25:57,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 4684 transitions. [2023-09-01 04:25:57,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 246.52631578947367) internal successors, (4684), 19 states have internal predecessors, (4684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:57,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 620.0) internal successors, (12400), 20 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:57,711 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 620.0) internal successors, (12400), 20 states have internal predecessors, (12400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:57,711 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 560 flow. Second operand 19 states and 4684 transitions. [2023-09-01 04:25:57,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 191 transitions, 1483 flow [2023-09-01 04:25:57,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 191 transitions, 1402 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 04:25:57,811 INFO L231 Difference]: Finished difference. Result has 117 places, 102 transitions, 901 flow [2023-09-01 04:25:57,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=901, PETRI_PLACES=117, PETRI_TRANSITIONS=102} [2023-09-01 04:25:57,812 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 65 predicate places. [2023-09-01 04:25:57,812 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 102 transitions, 901 flow [2023-09-01 04:25:57,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 241.4) internal successors, (2414), 10 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:57,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:25:57,812 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:25:57,821 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 04:25:58,013 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 04:25:58,013 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:25:58,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:25:58,013 INFO L85 PathProgramCache]: Analyzing trace with hash -303569723, now seen corresponding path program 2 times [2023-09-01 04:25:58,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:25:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554996270] [2023-09-01 04:25:58,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:25:58,014 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 04:25:58,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:25:58,014 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 04:25:58,016 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 04:25:58,148 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:25:58,148 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:25:58,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:25:58,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:25:58,219 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 04:25:58,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:25:58,245 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 64 treesize of output 62 [2023-09-01 04:25:58,255 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 62 treesize of output 60 [2023-09-01 04:25:58,392 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 04:25:58,392 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:25:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554996270] [2023-09-01 04:25:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1554996270] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:25:58,393 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:25:58,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:25:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304657658] [2023-09-01 04:25:58,393 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:25:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:25:58,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:25:58,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:25:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:25:59,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 620 [2023-09-01 04:25:59,103 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 102 transitions, 901 flow. Second operand has 10 states, 10 states have (on average 238.1) internal successors, (2381), 10 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:25:59,103 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:25:59,103 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 620 [2023-09-01 04:25:59,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:26:03,470 INFO L130 PetriNetUnfolder]: 7283/14087 cut-off events. [2023-09-01 04:26:03,470 INFO L131 PetriNetUnfolder]: For 71649/71649 co-relation queries the response was YES. [2023-09-01 04:26:03,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67539 conditions, 14087 events. 7283/14087 cut-off events. For 71649/71649 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 111151 event pairs, 962 based on Foata normal form. 320/13407 useless extension candidates. Maximal degree in co-relation 67497. Up to 4801 conditions per place. [2023-09-01 04:26:03,555 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 152 selfloop transitions, 73 changer transitions 0/225 dead transitions. [2023-09-01 04:26:03,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 225 transitions, 2071 flow [2023-09-01 04:26:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 04:26:03,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 04:26:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 4148 transitions. [2023-09-01 04:26:03,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2023-09-01 04:26:03,560 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 4148 transitions. [2023-09-01 04:26:03,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 4148 transitions. [2023-09-01 04:26:03,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:26:03,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 4148 transitions. [2023-09-01 04:26:03,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 244.0) internal successors, (4148), 17 states have internal predecessors, (4148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:03,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:03,573 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 620.0) internal successors, (11160), 18 states have internal predecessors, (11160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:03,573 INFO L175 Difference]: Start difference. First operand has 117 places, 102 transitions, 901 flow. Second operand 17 states and 4148 transitions. [2023-09-01 04:26:03,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 225 transitions, 2071 flow [2023-09-01 04:26:04,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 225 transitions, 1893 flow, removed 74 selfloop flow, removed 3 redundant places. [2023-09-01 04:26:04,482 INFO L231 Difference]: Finished difference. Result has 139 places, 138 transitions, 1348 flow [2023-09-01 04:26:04,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1348, PETRI_PLACES=139, PETRI_TRANSITIONS=138} [2023-09-01 04:26:04,483 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 87 predicate places. [2023-09-01 04:26:04,483 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 138 transitions, 1348 flow [2023-09-01 04:26:04,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 238.1) internal successors, (2381), 10 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:04,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:26:04,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:26:04,492 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 (23)] Forceful destruction successful, exit code 0 [2023-09-01 04:26:04,684 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 04:26:04,684 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:26:04,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:26:04,685 INFO L85 PathProgramCache]: Analyzing trace with hash -241653667, now seen corresponding path program 3 times [2023-09-01 04:26:04,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:26:04,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106433183] [2023-09-01 04:26:04,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:26:04,685 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 04:26:04,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:26:04,686 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 04:26:04,688 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 04:26:04,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 04:26:04,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:26:04,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:26:04,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:26:04,970 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 04:26:04,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:26:05,180 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 04:26:05,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:26:05,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106433183] [2023-09-01 04:26:05,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106433183] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:26:05,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:26:05,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:26:05,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982137849] [2023-09-01 04:26:05,181 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:26:05,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:26:05,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:26:05,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:26:05,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:26:05,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 620 [2023-09-01 04:26:05,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 138 transitions, 1348 flow. Second operand has 10 states, 10 states have (on average 240.3) internal successors, (2403), 10 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:05,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:26:05,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 620 [2023-09-01 04:26:05,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:26:09,959 INFO L130 PetriNetUnfolder]: 6863/12827 cut-off events. [2023-09-01 04:26:09,959 INFO L131 PetriNetUnfolder]: For 114941/114941 co-relation queries the response was YES. [2023-09-01 04:26:10,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70669 conditions, 12827 events. 6863/12827 cut-off events. For 114941/114941 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 95355 event pairs, 924 based on Foata normal form. 560/12747 useless extension candidates. Maximal degree in co-relation 70617. Up to 4081 conditions per place. [2023-09-01 04:26:10,173 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 137 selfloop transitions, 84 changer transitions 0/221 dead transitions. [2023-09-01 04:26:10,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 221 transitions, 2263 flow [2023-09-01 04:26:10,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:26:10,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:26:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3935 transitions. [2023-09-01 04:26:10,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3966733870967742 [2023-09-01 04:26:10,179 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3935 transitions. [2023-09-01 04:26:10,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3935 transitions. [2023-09-01 04:26:10,180 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:26:10,180 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3935 transitions. [2023-09-01 04:26:10,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 245.9375) internal successors, (3935), 16 states have internal predecessors, (3935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:10,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 620.0) internal successors, (10540), 17 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:10,190 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 620.0) internal successors, (10540), 17 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:10,190 INFO L175 Difference]: Start difference. First operand has 139 places, 138 transitions, 1348 flow. Second operand 16 states and 3935 transitions. [2023-09-01 04:26:10,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 221 transitions, 2263 flow [2023-09-01 04:26:12,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 221 transitions, 2069 flow, removed 71 selfloop flow, removed 4 redundant places. [2023-09-01 04:26:12,085 INFO L231 Difference]: Finished difference. Result has 153 places, 148 transitions, 1490 flow [2023-09-01 04:26:12,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1490, PETRI_PLACES=153, PETRI_TRANSITIONS=148} [2023-09-01 04:26:12,086 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 101 predicate places. [2023-09-01 04:26:12,086 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 148 transitions, 1490 flow [2023-09-01 04:26:12,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 240.3) internal successors, (2403), 10 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:12,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:26:12,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:26:12,097 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 (24)] Ended with exit code 0 [2023-09-01 04:26:12,287 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 04:26:12,287 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:26:12,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:26:12,287 INFO L85 PathProgramCache]: Analyzing trace with hash -392583389, now seen corresponding path program 4 times [2023-09-01 04:26:12,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:26:12,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [324091456] [2023-09-01 04:26:12,288 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 04:26:12,288 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 04:26:12,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:26:12,288 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 04:26:12,289 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 04:26:12,407 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 04:26:12,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:26:12,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:26:12,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:26:12,488 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 04:26:12,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:26:12,548 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 64 treesize of output 62 [2023-09-01 04:26:12,552 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 62 treesize of output 60 [2023-09-01 04:26:12,745 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 04:26:12,746 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:26:12,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [324091456] [2023-09-01 04:26:12,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [324091456] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:26:12,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:26:12,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:26:12,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403591726] [2023-09-01 04:26:12,746 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:26:12,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:26:12,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:26:12,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:26:12,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:26:13,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 620 [2023-09-01 04:26:13,275 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 148 transitions, 1490 flow. Second operand has 10 states, 10 states have (on average 237.1) internal successors, (2371), 10 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:13,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:26:13,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 620 [2023-09-01 04:26:13,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:26:17,979 INFO L130 PetriNetUnfolder]: 7583/14347 cut-off events. [2023-09-01 04:26:17,980 INFO L131 PetriNetUnfolder]: For 106111/106111 co-relation queries the response was YES. [2023-09-01 04:26:18,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80432 conditions, 14347 events. 7583/14347 cut-off events. For 106111/106111 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 110784 event pairs, 2080 based on Foata normal form. 280/13747 useless extension candidates. Maximal degree in co-relation 80377. Up to 7968 conditions per place. [2023-09-01 04:26:18,084 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 151 selfloop transitions, 59 changer transitions 0/210 dead transitions. [2023-09-01 04:26:18,084 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 210 transitions, 2267 flow [2023-09-01 04:26:18,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:26:18,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:26:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3381 transitions. [2023-09-01 04:26:18,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3895161290322581 [2023-09-01 04:26:18,089 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3381 transitions. [2023-09-01 04:26:18,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3381 transitions. [2023-09-01 04:26:18,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:26:18,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3381 transitions. [2023-09-01 04:26:18,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 241.5) internal successors, (3381), 14 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:18,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:18,099 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:18,099 INFO L175 Difference]: Start difference. First operand has 153 places, 148 transitions, 1490 flow. Second operand 14 states and 3381 transitions. [2023-09-01 04:26:18,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 210 transitions, 2267 flow [2023-09-01 04:26:19,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 210 transitions, 2072 flow, removed 41 selfloop flow, removed 8 redundant places. [2023-09-01 04:26:19,849 INFO L231 Difference]: Finished difference. Result has 165 places, 164 transitions, 1661 flow [2023-09-01 04:26:19,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1661, PETRI_PLACES=165, PETRI_TRANSITIONS=164} [2023-09-01 04:26:19,850 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 113 predicate places. [2023-09-01 04:26:19,850 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 164 transitions, 1661 flow [2023-09-01 04:26:19,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 237.1) internal successors, (2371), 10 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:19,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:26:19,851 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:26:19,861 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 04:26:20,059 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 04:26:20,059 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:26:20,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:26:20,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1872588002, now seen corresponding path program 1 times [2023-09-01 04:26:20,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:26:20,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251653430] [2023-09-01 04:26:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:26:20,060 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 04:26:20,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:26:20,061 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 04:26:20,062 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 04:26:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:26:20,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:26:20,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:26:20,264 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 04:26:20,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:26:20,420 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 04:26:20,420 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:26:20,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251653430] [2023-09-01 04:26:20,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1251653430] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:26:20,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:26:20,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:26:20,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016040936] [2023-09-01 04:26:20,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:26:20,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:26:20,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:26:20,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:26:20,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:26:21,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 620 [2023-09-01 04:26:21,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 164 transitions, 1661 flow. Second operand has 10 states, 10 states have (on average 239.3) internal successors, (2393), 10 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:21,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:26:21,306 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 620 [2023-09-01 04:26:21,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:26:27,596 INFO L130 PetriNetUnfolder]: 8843/16487 cut-off events. [2023-09-01 04:26:27,597 INFO L131 PetriNetUnfolder]: For 112422/112422 co-relation queries the response was YES. [2023-09-01 04:26:27,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94759 conditions, 16487 events. 8843/16487 cut-off events. For 112422/112422 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 128760 event pairs, 2104 based on Foata normal form. 80/15487 useless extension candidates. Maximal degree in co-relation 94697. Up to 8348 conditions per place. [2023-09-01 04:26:27,735 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 159 selfloop transitions, 88 changer transitions 0/247 dead transitions. [2023-09-01 04:26:27,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 247 transitions, 2700 flow [2023-09-01 04:26:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:26:27,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:26:27,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3907 transitions. [2023-09-01 04:26:27,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3938508064516129 [2023-09-01 04:26:27,739 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3907 transitions. [2023-09-01 04:26:27,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3907 transitions. [2023-09-01 04:26:27,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:26:27,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3907 transitions. [2023-09-01 04:26:27,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 244.1875) internal successors, (3907), 16 states have internal predecessors, (3907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:27,750 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 620.0) internal successors, (10540), 17 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:27,751 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 620.0) internal successors, (10540), 17 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:27,751 INFO L175 Difference]: Start difference. First operand has 165 places, 164 transitions, 1661 flow. Second operand 16 states and 3907 transitions. [2023-09-01 04:26:27,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 247 transitions, 2700 flow [2023-09-01 04:26:30,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 247 transitions, 2610 flow, removed 26 selfloop flow, removed 3 redundant places. [2023-09-01 04:26:30,267 INFO L231 Difference]: Finished difference. Result has 177 places, 194 transitions, 2166 flow [2023-09-01 04:26:30,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1593, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2166, PETRI_PLACES=177, PETRI_TRANSITIONS=194} [2023-09-01 04:26:30,267 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 125 predicate places. [2023-09-01 04:26:30,267 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 194 transitions, 2166 flow [2023-09-01 04:26:30,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 239.3) internal successors, (2393), 10 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:30,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:26:30,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:26:30,277 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 (26)] Forceful destruction successful, exit code 0 [2023-09-01 04:26:30,468 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 04:26:30,469 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:26:30,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:26:30,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1675259756, now seen corresponding path program 2 times [2023-09-01 04:26:30,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:26:30,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [263586924] [2023-09-01 04:26:30,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 04:26:30,470 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 04:26:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:26:30,470 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 04:26:30,472 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 (27)] Waiting until timeout for monitored process [2023-09-01 04:26:30,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:26:30,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:26:30,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:26:30,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:26:30,702 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 04:26:30,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:26:30,821 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 04:26:30,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:26:30,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [263586924] [2023-09-01 04:26:30,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [263586924] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:26:30,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:26:30,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:26:30,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133927481] [2023-09-01 04:26:30,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:26:30,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:26:30,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:26:30,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:26:30,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:26:31,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 620 [2023-09-01 04:26:31,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 194 transitions, 2166 flow. Second operand has 10 states, 10 states have (on average 239.3) internal successors, (2393), 10 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:31,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:26:31,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 620 [2023-09-01 04:26:31,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:26:37,166 INFO L130 PetriNetUnfolder]: 9023/16867 cut-off events. [2023-09-01 04:26:37,167 INFO L131 PetriNetUnfolder]: For 117011/117011 co-relation queries the response was YES. [2023-09-01 04:26:37,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101280 conditions, 16867 events. 9023/16867 cut-off events. For 117011/117011 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 132740 event pairs, 2180 based on Foata normal form. 80/15907 useless extension candidates. Maximal degree in co-relation 101217. Up to 8348 conditions per place. [2023-09-01 04:26:37,311 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 172 selfloop transitions, 73 changer transitions 0/245 dead transitions. [2023-09-01 04:26:37,311 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 245 transitions, 2872 flow [2023-09-01 04:26:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:26:37,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:26:37,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3413 transitions. [2023-09-01 04:26:37,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39320276497695855 [2023-09-01 04:26:37,315 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3413 transitions. [2023-09-01 04:26:37,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3413 transitions. [2023-09-01 04:26:37,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:26:37,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3413 transitions. [2023-09-01 04:26:37,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 243.78571428571428) internal successors, (3413), 14 states have internal predecessors, (3413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:37,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:37,323 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:37,323 INFO L175 Difference]: Start difference. First operand has 177 places, 194 transitions, 2166 flow. Second operand 14 states and 3413 transitions. [2023-09-01 04:26:37,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 245 transitions, 2872 flow [2023-09-01 04:26:42,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 245 transitions, 2548 flow, removed 146 selfloop flow, removed 5 redundant places. [2023-09-01 04:26:42,464 INFO L231 Difference]: Finished difference. Result has 189 places, 200 transitions, 2130 flow [2023-09-01 04:26:42,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=1906, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2130, PETRI_PLACES=189, PETRI_TRANSITIONS=200} [2023-09-01 04:26:42,464 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 137 predicate places. [2023-09-01 04:26:42,464 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 200 transitions, 2130 flow [2023-09-01 04:26:42,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 239.3) internal successors, (2393), 10 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:42,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:26:42,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:26:42,474 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 (27)] Ended with exit code 0 [2023-09-01 04:26:42,665 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 04:26:42,666 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:26:42,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:26:42,666 INFO L85 PathProgramCache]: Analyzing trace with hash 517864581, now seen corresponding path program 5 times [2023-09-01 04:26:42,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:26:42,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828087660] [2023-09-01 04:26:42,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 04:26:42,667 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 04:26:42,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:26:42,667 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 04:26:42,668 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 04:26:42,798 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 04:26:42,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:26:42,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:26:42,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:26:42,877 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 04:26:42,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:26:42,941 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 64 treesize of output 62 [2023-09-01 04:26:42,945 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 62 treesize of output 60 [2023-09-01 04:26:42,976 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 04:26:42,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:26:42,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828087660] [2023-09-01 04:26:42,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828087660] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:26:42,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:26:42,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:26:42,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928784109] [2023-09-01 04:26:42,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:26:42,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:26:42,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:26:42,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:26:42,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:26:43,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 620 [2023-09-01 04:26:43,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 200 transitions, 2130 flow. Second operand has 10 states, 10 states have (on average 238.1) internal successors, (2381), 10 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:43,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:26:43,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 620 [2023-09-01 04:26:43,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:26:49,120 INFO L130 PetriNetUnfolder]: 11103/20827 cut-off events. [2023-09-01 04:26:49,121 INFO L131 PetriNetUnfolder]: For 116291/116291 co-relation queries the response was YES. [2023-09-01 04:26:49,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110883 conditions, 20827 events. 11103/20827 cut-off events. For 116291/116291 co-relation queries the response was YES. Maximal size of possible extension queue 488. Compared 170061 event pairs, 1940 based on Foata normal form. 200/19587 useless extension candidates. Maximal degree in co-relation 110817. Up to 9268 conditions per place. [2023-09-01 04:26:49,300 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 200 selfloop transitions, 78 changer transitions 0/278 dead transitions. [2023-09-01 04:26:49,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 278 transitions, 3353 flow [2023-09-01 04:26:49,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 04:26:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 04:26:49,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2899 transitions. [2023-09-01 04:26:49,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896505376344086 [2023-09-01 04:26:49,303 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2899 transitions. [2023-09-01 04:26:49,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2899 transitions. [2023-09-01 04:26:49,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:26:49,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2899 transitions. [2023-09-01 04:26:49,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 241.58333333333334) internal successors, (2899), 12 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:49,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:49,312 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 620.0) internal successors, (8060), 13 states have internal predecessors, (8060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:49,312 INFO L175 Difference]: Start difference. First operand has 189 places, 200 transitions, 2130 flow. Second operand 12 states and 2899 transitions. [2023-09-01 04:26:49,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 278 transitions, 3353 flow [2023-09-01 04:26:51,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 278 transitions, 3308 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-09-01 04:26:51,645 INFO L231 Difference]: Finished difference. Result has 203 places, 217 transitions, 2533 flow [2023-09-01 04:26:51,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2533, PETRI_PLACES=203, PETRI_TRANSITIONS=217} [2023-09-01 04:26:51,646 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 151 predicate places. [2023-09-01 04:26:51,646 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 217 transitions, 2533 flow [2023-09-01 04:26:51,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 238.1) internal successors, (2381), 10 states have internal predecessors, (2381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:51,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:26:51,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:26:51,656 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 04:26:51,848 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 04:26:51,848 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:26:51,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:26:51,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1568471229, now seen corresponding path program 6 times [2023-09-01 04:26:51,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:26:51,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [349199552] [2023-09-01 04:26:51,849 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 04:26:51,849 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 04:26:51,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:26:51,853 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 04:26:51,854 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 04:26:52,029 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 04:26:52,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:26:52,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:26:52,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:26:52,092 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 04:26:52,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:26:52,268 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 04:26:52,268 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:26:52,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [349199552] [2023-09-01 04:26:52,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [349199552] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:26:52,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:26:52,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:26:52,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620798967] [2023-09-01 04:26:52,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:26:52,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:26:52,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:26:52,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:26:52,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:26:53,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 620 [2023-09-01 04:26:53,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 217 transitions, 2533 flow. Second operand has 10 states, 10 states have (on average 238.3) internal successors, (2383), 10 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:26:53,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:26:53,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 620 [2023-09-01 04:26:53,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:27:01,066 INFO L130 PetriNetUnfolder]: 11943/22947 cut-off events. [2023-09-01 04:27:01,066 INFO L131 PetriNetUnfolder]: For 180483/180483 co-relation queries the response was YES. [2023-09-01 04:27:01,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133290 conditions, 22947 events. 11943/22947 cut-off events. For 180483/180483 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 194401 event pairs, 2520 based on Foata normal form. 720/22867 useless extension candidates. Maximal degree in co-relation 133217. Up to 12688 conditions per place. [2023-09-01 04:27:01,321 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 194 selfloop transitions, 121 changer transitions 0/315 dead transitions. [2023-09-01 04:27:01,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 315 transitions, 4037 flow [2023-09-01 04:27:01,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 04:27:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 04:27:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3879 transitions. [2023-09-01 04:27:01,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39102822580645163 [2023-09-01 04:27:01,326 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3879 transitions. [2023-09-01 04:27:01,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3879 transitions. [2023-09-01 04:27:01,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:27:01,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3879 transitions. [2023-09-01 04:27:01,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 242.4375) internal successors, (3879), 16 states have internal predecessors, (3879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:01,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 620.0) internal successors, (10540), 17 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:01,337 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 620.0) internal successors, (10540), 17 states have internal predecessors, (10540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:01,337 INFO L175 Difference]: Start difference. First operand has 203 places, 217 transitions, 2533 flow. Second operand 16 states and 3879 transitions. [2023-09-01 04:27:01,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 315 transitions, 4037 flow [2023-09-01 04:27:05,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 315 transitions, 3848 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-09-01 04:27:05,222 INFO L231 Difference]: Finished difference. Result has 218 places, 262 transitions, 3388 flow [2023-09-01 04:27:05,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=2396, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3388, PETRI_PLACES=218, PETRI_TRANSITIONS=262} [2023-09-01 04:27:05,223 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 166 predicate places. [2023-09-01 04:27:05,223 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 262 transitions, 3388 flow [2023-09-01 04:27:05,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 238.3) internal successors, (2383), 10 states have internal predecessors, (2383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:05,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:27:05,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:27:05,233 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 04:27:05,427 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 04:27:05,427 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:27:05,428 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:27:05,428 INFO L85 PathProgramCache]: Analyzing trace with hash -755408778, now seen corresponding path program 3 times [2023-09-01 04:27:05,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:27:05,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760072438] [2023-09-01 04:27:05,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 04:27:05,429 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 04:27:05,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:27:05,429 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 04:27:05,430 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 04:27:05,583 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 04:27:05,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 04:27:05,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 04:27:05,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:27:05,658 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 04:27:05,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:27:05,685 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 64 treesize of output 62 [2023-09-01 04:27:05,688 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 62 treesize of output 60 [2023-09-01 04:27:05,773 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 04:27:05,773 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 04:27:05,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760072438] [2023-09-01 04:27:05,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760072438] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 04:27:05,773 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-09-01 04:27:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-09-01 04:27:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131796417] [2023-09-01 04:27:05,773 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-09-01 04:27:05,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 04:27:05,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 04:27:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 04:27:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-09-01 04:27:06,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 235 out of 620 [2023-09-01 04:27:06,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 262 transitions, 3388 flow. Second operand has 10 states, 10 states have (on average 237.1) internal successors, (2371), 10 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:06,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 04:27:06,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 235 of 620 [2023-09-01 04:27:06,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 04:27:16,031 INFO L130 PetriNetUnfolder]: 16123/29287 cut-off events. [2023-09-01 04:27:16,031 INFO L131 PetriNetUnfolder]: For 220351/220351 co-relation queries the response was YES. [2023-09-01 04:27:16,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181614 conditions, 29287 events. 16123/29287 cut-off events. For 220351/220351 co-relation queries the response was YES. Maximal size of possible extension queue 663. Compared 243368 event pairs, 1520 based on Foata normal form. 200/27167 useless extension candidates. Maximal degree in co-relation 181537. Up to 9460 conditions per place. [2023-09-01 04:27:16,321 INFO L137 encePairwiseOnDemand]: 614/620 looper letters, 219 selfloop transitions, 156 changer transitions 0/375 dead transitions. [2023-09-01 04:27:16,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 375 transitions, 5288 flow [2023-09-01 04:27:16,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 04:27:16,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 04:27:16,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 3390 transitions. [2023-09-01 04:27:16,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39055299539170507 [2023-09-01 04:27:16,331 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 3390 transitions. [2023-09-01 04:27:16,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 3390 transitions. [2023-09-01 04:27:16,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 04:27:16,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 3390 transitions. [2023-09-01 04:27:16,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 242.14285714285714) internal successors, (3390), 14 states have internal predecessors, (3390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:16,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:16,340 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 620.0) internal successors, (9300), 15 states have internal predecessors, (9300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:16,340 INFO L175 Difference]: Start difference. First operand has 218 places, 262 transitions, 3388 flow. Second operand 14 states and 3390 transitions. [2023-09-01 04:27:16,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 375 transitions, 5288 flow [2023-09-01 04:27:25,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 375 transitions, 4917 flow, removed 159 selfloop flow, removed 4 redundant places. [2023-09-01 04:27:25,300 INFO L231 Difference]: Finished difference. Result has 231 places, 308 transitions, 4060 flow [2023-09-01 04:27:25,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=620, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4060, PETRI_PLACES=231, PETRI_TRANSITIONS=308} [2023-09-01 04:27:25,301 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 179 predicate places. [2023-09-01 04:27:25,301 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 308 transitions, 4060 flow [2023-09-01 04:27:25,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 237.1) internal successors, (2371), 10 states have internal predecessors, (2371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 04:27:25,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:27:25,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:27:25,311 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 04:27:25,504 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 04:27:25,504 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2023-09-01 04:27:25,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:27:25,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1933700115, now seen corresponding path program 7 times [2023-09-01 04:27:25,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 04:27:25,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354685499] [2023-09-01 04:27:25,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 04:27:25,505 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 04:27:25,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 04:27:25,506 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 04:27:25,507 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 04:27:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 04:27:25,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 04:27:25,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 04:27:26,112 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 552 treesize of output 544 [2023-09-01 04:27:26,122 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 544 treesize of output 536 [2023-09-01 04:28:11,371 WARN L222 SmtUtils]: Spent 12.07s on a formula simplification that was a NOOP. DAG size: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 04:28:12,844 INFO L321 Elim1Store]: treesize reduction 972, result has 1.3 percent of original size [2023-09-01 04:28:12,844 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 28 new quantified variables, introduced 120 case distinctions, treesize of input 5692 treesize of output 274 [2023-09-01 04:28:15,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 04:28:15,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 04:28:24,631 WARN L222 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 600 DAG size of output: 162 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-09-01 04:28:24,632 INFO L321 Elim1Store]: treesize reduction 1680, result has 22.3 percent of original size [2023-09-01 04:28:24,633 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 0 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 683 treesize of output 988 [2023-09-01 04:28:24,686 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 499 treesize of output 491 [2023-09-01 04:28:24,739 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 491 treesize of output 483 [2023-09-01 04:35:23,658 WARN L222 SmtUtils]: Spent 5.08s on a formula simplification. DAG size of input: 859 DAG size of output: 876 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15