./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i --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/goblint-regression/28-race_reach_45-escape_racing.i -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 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf --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 00:44:33,041 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:44:33,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:44:33,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:44:33,088 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:44:33,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:44:33,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:44:33,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:44:33,098 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:44:33,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:44:33,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:44:33,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:44:33,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:44:33,108 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:44:33,110 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:44:33,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:44:33,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:44:33,119 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:44:33,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:44:33,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:44:33,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:44:33,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:44:33,129 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:44:33,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:44:33,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:44:33,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:44:33,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:44:33,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:44:33,139 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:44:33,139 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:44:33,140 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:44:33,141 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:44:33,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:44:33,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:44:33,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:44:33,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:44:33,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:44:33,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:44:33,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:44:33,146 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:44:33,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:44:33,148 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:44:33,190 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:44:33,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:44:33,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:44:33,192 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:44:33,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:44:33,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:44:33,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:44:33,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:44:33,194 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:44:33,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:44:33,195 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:44:33,195 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:44:33,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:44:33,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:44:33,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:44:33,196 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:44:33,196 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:44:33,196 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:44:33,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:44:33,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:44:33,196 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:44:33,197 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:44:33,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:44:33,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:44:33,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:44:33,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:44:33,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:44:33,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:44:33,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:44:33,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:44:33,198 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:44:33,198 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:44:33,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:44:33,199 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:44:33,199 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:44:33,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:44:33,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:44:33,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:44:33,525 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:44:33,525 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:44:33,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-09-01 00:44:34,761 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:44:35,074 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:44:35,075 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-09-01 00:44:35,094 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06a52343/fe1cc8c69b24433c9d947814db299359/FLAGf4ab77beb [2023-09-01 00:44:35,109 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b06a52343/fe1cc8c69b24433c9d947814db299359 [2023-09-01 00:44:35,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:44:35,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:44:35,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:44:35,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:44:35,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:44:35,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:44:35" (1/1) ... [2023-09-01 00:44:35,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@783b5220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:35, skipping insertion in model container [2023-09-01 00:44:35,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:44:35" (1/1) ... [2023-09-01 00:44:35,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:44:35,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:44:35,474 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-09-01 00:44:35,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:44:35,508 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 00:44:35,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1bb9eb44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:35, skipping insertion in model container [2023-09-01 00:44:35,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:44:35,510 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-09-01 00:44:35,512 INFO L158 Benchmark]: Toolchain (without parser) took 398.01ms. Allocated memory is still 69.2MB. Free memory was 45.2MB in the beginning and 32.6MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 00:44:35,512 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:44:35,513 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.08ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 32.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 00:44:35,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 395.08ms. Allocated memory is still 69.2MB. Free memory was 45.0MB in the beginning and 32.8MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 700]: 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/goblint-regression/28-race_reach_45-escape_racing.i -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 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf --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 00:44:37,215 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:44:37,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:44:37,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:44:37,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:44:37,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:44:37,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:44:37,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:44:37,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:44:37,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:44:37,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:44:37,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:44:37,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:44:37,280 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:44:37,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:44:37,291 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:44:37,292 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:44:37,293 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:44:37,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:44:37,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:44:37,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:44:37,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:44:37,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:44:37,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:44:37,310 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:44:37,310 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:44:37,311 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:44:37,312 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:44:37,313 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:44:37,313 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:44:37,314 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:44:37,315 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:44:37,317 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:44:37,318 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:44:37,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:44:37,319 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:44:37,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:44:37,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:44:37,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:44:37,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:44:37,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:44:37,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 00:44:37,357 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:44:37,357 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:44:37,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:44:37,358 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:44:37,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:44:37,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:44:37,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:44:37,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:44:37,360 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:44:37,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:44:37,361 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:44:37,361 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:44:37,361 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:44:37,362 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:44:37,362 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:44:37,362 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:44:37,362 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:44:37,362 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:44:37,362 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:44:37,363 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:44:37,363 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 00:44:37,363 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 00:44:37,363 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:44:37,363 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:44:37,363 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:44:37,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:44:37,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:44:37,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:44:37,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:44:37,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:44:37,364 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 00:44:37,365 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 00:44:37,365 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:44:37,365 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:44:37,365 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:44:37,365 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 00:44:37,366 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:44:37,366 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4864acf28eb3fe42b4a237468061905eb474c41e1edb519c0790cee08cdc91bf Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:44:37,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:44:37,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:44:37,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:44:37,703 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:44:37,703 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:44:37,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-09-01 00:44:38,818 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:44:39,140 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:44:39,142 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i [2023-09-01 00:44:39,158 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97af68eed/14c6bbed9c89447389a47426a4ec3644/FLAG003c23361 [2023-09-01 00:44:39,183 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97af68eed/14c6bbed9c89447389a47426a4ec3644 [2023-09-01 00:44:39,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:44:39,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:44:39,189 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:44:39,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:44:39,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:44:39,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,195 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535c3931 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39, skipping insertion in model container [2023-09-01 00:44:39,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:44:39,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:44:39,548 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-09-01 00:44:39,571 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:44:39,588 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-09-01 00:44:39,623 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:44:39,676 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-09-01 00:44:39,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:44:39,697 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:44:39,742 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_45-escape_racing.i[30176,30189] [2023-09-01 00:44:39,751 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:44:39,800 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:44:39,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39 WrapperNode [2023-09-01 00:44:39,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:44:39,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:44:39,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:44:39,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:44:39,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,852 INFO L138 Inliner]: procedures = 174, calls = 45, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2023-09-01 00:44:39,853 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:44:39,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:44:39,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:44:39,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:44:39,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,876 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:44:39,880 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:44:39,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:44:39,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:44:39,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (1/1) ... [2023-09-01 00:44:39,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:44:39,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:44:39,908 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 00:44:39,913 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 00:44:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 00:44:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:44:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-09-01 00:44:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:44:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:44:39,944 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 00:44:40,125 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:44:40,144 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:44:40,429 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:44:40,435 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:44:40,435 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-09-01 00:44:40,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:44:40 BoogieIcfgContainer [2023-09-01 00:44:40,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:44:40,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:44:40,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:44:40,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:44:40,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:44:39" (1/3) ... [2023-09-01 00:44:40,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:44:40, skipping insertion in model container [2023-09-01 00:44:40,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:44:39" (2/3) ... [2023-09-01 00:44:40,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471f0ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:44:40, skipping insertion in model container [2023-09-01 00:44:40,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:44:40" (3/3) ... [2023-09-01 00:44:40,444 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_45-escape_racing.i [2023-09-01 00:44:40,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:44:40,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-09-01 00:44:40,458 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:44:40,561 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:44:40,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 121 transitions, 250 flow [2023-09-01 00:44:40,663 INFO L130 PetriNetUnfolder]: 9/120 cut-off events. [2023-09-01 00:44:40,664 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:44:40,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 120 events. 9/120 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 244 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2023-09-01 00:44:40,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 121 transitions, 250 flow [2023-09-01 00:44:40,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 111 places, 116 transitions, 238 flow [2023-09-01 00:44:40,677 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:40,690 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 116 transitions, 238 flow [2023-09-01 00:44:40,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 116 transitions, 238 flow [2023-09-01 00:44:40,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 111 places, 116 transitions, 238 flow [2023-09-01 00:44:40,741 INFO L130 PetriNetUnfolder]: 9/116 cut-off events. [2023-09-01 00:44:40,741 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:44:40,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 116 events. 9/116 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 247 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 67. Up to 3 conditions per place. [2023-09-01 00:44:40,746 INFO L119 LiptonReduction]: Number of co-enabled transitions 2132 [2023-09-01 00:44:54,867 INFO L134 LiptonReduction]: Checked pairs total: 4685 [2023-09-01 00:44:54,867 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-09-01 00:44:54,882 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:44:54,888 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;@7024011b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:54,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-09-01 00:44:54,891 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 00:44:54,895 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:44:54,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:54,896 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:44:54,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:54,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash 456, now seen corresponding path program 1 times [2023-09-01 00:44:54,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:54,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1460086653] [2023-09-01 00:44:54,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:54,915 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 00:44:54,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:54,918 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 00:44:54,930 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 00:44:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:54,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2023-09-01 00:44:54,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:54,995 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 00:44:54,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:54,996 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:54,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1460086653] [2023-09-01 00:44:54,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1460086653] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:54,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:54,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:44:54,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383302914] [2023-09-01 00:44:54,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:55,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:44:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:55,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:44:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:44:55,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 229 [2023-09-01 00:44:55,039 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 90 flow. Second operand has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:55,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:55,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 229 [2023-09-01 00:44:55,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:55,217 INFO L130 PetriNetUnfolder]: 84/216 cut-off events. [2023-09-01 00:44:55,218 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:44:55,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 413 conditions, 216 events. 84/216 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 969 event pairs, 84 based on Foata normal form. 8/140 useless extension candidates. Maximal degree in co-relation 399. Up to 192 conditions per place. [2023-09-01 00:44:55,220 INFO L137 encePairwiseOnDemand]: 215/229 looper letters, 23 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-09-01 00:44:55,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 108 flow [2023-09-01 00:44:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:44:55,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:44:55,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 255 transitions. [2023-09-01 00:44:55,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5567685589519651 [2023-09-01 00:44:55,233 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 255 transitions. [2023-09-01 00:44:55,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 255 transitions. [2023-09-01 00:44:55,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:55,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 255 transitions. [2023-09-01 00:44:55,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 127.5) internal successors, (255), 2 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:55,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:55,244 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 229.0) internal successors, (687), 3 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:55,245 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 90 flow. Second operand 2 states and 255 transitions. [2023-09-01 00:44:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 108 flow [2023-09-01 00:44:55,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 104 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:44:55,261 INFO L231 Difference]: Finished difference. Result has 31 places, 28 transitions, 58 flow [2023-09-01 00:44:55,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=28} [2023-09-01 00:44:55,266 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-09-01 00:44:55,266 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 28 transitions, 58 flow [2023-09-01 00:44:55,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 109.5) internal successors, (219), 2 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:55,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:55,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:44:55,280 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 00:44:55,468 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 00:44:55,468 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:55,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:55,469 INFO L85 PathProgramCache]: Analyzing trace with hash 13962953, now seen corresponding path program 1 times [2023-09-01 00:44:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988868284] [2023-09-01 00:44:55,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:55,470 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 00:44:55,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:55,477 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 00:44:55,480 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 00:44:55,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:55,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 00:44:55,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:55,676 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:44:55,677 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-09-01 00:44:55,705 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 00:44:55,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:55,706 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:55,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988868284] [2023-09-01 00:44:55,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988868284] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:55,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:55,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:44:55,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789349105] [2023-09-01 00:44:55,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:55,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:44:55,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:55,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:44:55,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:44:55,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 229 [2023-09-01 00:44:55,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 28 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:55,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:55,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 229 [2023-09-01 00:44:55,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:56,011 INFO L130 PetriNetUnfolder]: 72/191 cut-off events. [2023-09-01 00:44:56,011 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:44:56,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 191 events. 72/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 828 event pairs, 72 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 358. Up to 165 conditions per place. [2023-09-01 00:44:56,013 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 20 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-09-01 00:44:56,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 27 transitions, 100 flow [2023-09-01 00:44:56,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:44:56,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:44:56,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-09-01 00:44:56,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49199417758369723 [2023-09-01 00:44:56,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-09-01 00:44:56,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-09-01 00:44:56,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:56,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-09-01 00:44:56,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,032 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,033 INFO L175 Difference]: Start difference. First operand has 31 places, 28 transitions, 58 flow. Second operand 3 states and 338 transitions. [2023-09-01 00:44:56,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 27 transitions, 100 flow [2023-09-01 00:44:56,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:44:56,034 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 60 flow [2023-09-01 00:44:56,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-09-01 00:44:56,035 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -6 predicate places. [2023-09-01 00:44:56,036 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 60 flow [2023-09-01 00:44:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:56,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:44:56,052 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 00:44:56,248 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 00:44:56,248 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:56,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:56,249 INFO L85 PathProgramCache]: Analyzing trace with hash 13962952, now seen corresponding path program 1 times [2023-09-01 00:44:56,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:56,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364194607] [2023-09-01 00:44:56,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:56,250 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 00:44:56,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:56,251 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 00:44:56,254 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 00:44:56,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:56,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-09-01 00:44:56,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:56,358 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 00:44:56,358 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-09-01 00:44:56,372 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 00:44:56,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:56,373 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:56,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364194607] [2023-09-01 00:44:56,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364194607] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:56,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:56,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:44:56,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239482555] [2023-09-01 00:44:56,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:56,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:44:56,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:56,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:44:56,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:44:56,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 229 [2023-09-01 00:44:56,478 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:56,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 229 [2023-09-01 00:44:56,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:56,580 INFO L130 PetriNetUnfolder]: 60/166 cut-off events. [2023-09-01 00:44:56,580 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:44:56,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 166 events. 60/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 695 event pairs, 60 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 310. Up to 140 conditions per place. [2023-09-01 00:44:56,582 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 19 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-09-01 00:44:56,582 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 100 flow [2023-09-01 00:44:56,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:44:56,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:44:56,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 328 transitions. [2023-09-01 00:44:56,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4774381368267831 [2023-09-01 00:44:56,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 328 transitions. [2023-09-01 00:44:56,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 328 transitions. [2023-09-01 00:44:56,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:56,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 328 transitions. [2023-09-01 00:44:56,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,596 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 60 flow. Second operand 3 states and 328 transitions. [2023-09-01 00:44:56,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 100 flow [2023-09-01 00:44:56,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 96 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:44:56,598 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-09-01 00:44:56,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-09-01 00:44:56,599 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-09-01 00:44:56,600 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-09-01 00:44:56,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.33333333333333) internal successors, (310), 3 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:56,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:56,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:44:56,616 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 00:44:56,811 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 00:44:56,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:56,812 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:56,812 INFO L85 PathProgramCache]: Analyzing trace with hash 432831002, now seen corresponding path program 1 times [2023-09-01 00:44:56,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:56,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003888946] [2023-09-01 00:44:56,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:56,813 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 00:44:56,813 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:56,817 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 00:44:56,819 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 00:44:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:56,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 6 conjunts are in the unsatisfiable core [2023-09-01 00:44:56,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:56,936 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2023-09-01 00:44:56,936 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 1 case distinctions, treesize of input 9 treesize of output 19 [2023-09-01 00:44:56,962 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 00:44:56,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:56,963 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003888946] [2023-09-01 00:44:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003888946] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:56,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:56,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:44:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208436089] [2023-09-01 00:44:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:56,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:44:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:44:56,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:44:57,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 229 [2023-09-01 00:44:57,125 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:57,125 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:57,125 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 229 [2023-09-01 00:44:57,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:57,255 INFO L130 PetriNetUnfolder]: 50/129 cut-off events. [2023-09-01 00:44:57,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:44:57,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 129 events. 50/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 417 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 251. Up to 111 conditions per place. [2023-09-01 00:44:57,256 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 20 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-09-01 00:44:57,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 112 flow [2023-09-01 00:44:57,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 00:44:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 00:44:57,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 491 transitions. [2023-09-01 00:44:57,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42882096069868997 [2023-09-01 00:44:57,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 491 transitions. [2023-09-01 00:44:57,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 491 transitions. [2023-09-01 00:44:57,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:57,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 491 transitions. [2023-09-01 00:44:57,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 98.2) internal successors, (491), 5 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:57,262 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:57,263 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 229.0) internal successors, (1374), 6 states have internal predecessors, (1374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:57,263 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 5 states and 491 transitions. [2023-09-01 00:44:57,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 112 flow [2023-09-01 00:44:57,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:44:57,265 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 58 flow [2023-09-01 00:44:57,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-09-01 00:44:57,266 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -7 predicate places. [2023-09-01 00:44:57,266 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 58 flow [2023-09-01 00:44:57,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.8) internal successors, (469), 5 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:57,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:57,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:44:57,282 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 00:44:57,476 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 00:44:57,476 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:57,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:57,477 INFO L85 PathProgramCache]: Analyzing trace with hash 432831003, now seen corresponding path program 1 times [2023-09-01 00:44:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:57,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203835510] [2023-09-01 00:44:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:57,478 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 00:44:57,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:57,479 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 00:44:57,482 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 00:44:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:57,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 10 conjunts are in the unsatisfiable core [2023-09-01 00:44:57,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:57,593 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-09-01 00:44:57,594 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-09-01 00:44:57,644 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 00:44:57,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:57,644 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:57,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203835510] [2023-09-01 00:44:57,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203835510] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:57,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:57,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:44:57,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509470092] [2023-09-01 00:44:57,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:57,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:44:57,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:57,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:44:57,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:44:57,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 229 [2023-09-01 00:44:57,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:57,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:57,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 229 [2023-09-01 00:44:57,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:58,007 INFO L130 PetriNetUnfolder]: 40/107 cut-off events. [2023-09-01 00:44:58,007 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 00:44:58,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 107 events. 40/107 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 312 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 214. Up to 89 conditions per place. [2023-09-01 00:44:58,008 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 18 selfloop transitions, 4 changer transitions 0/27 dead transitions. [2023-09-01 00:44:58,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 108 flow [2023-09-01 00:44:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:44:58,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:44:58,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 624 transitions. [2023-09-01 00:44:58,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45414847161572053 [2023-09-01 00:44:58,011 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 624 transitions. [2023-09-01 00:44:58,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 624 transitions. [2023-09-01 00:44:58,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:58,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 624 transitions. [2023-09-01 00:44:58,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 104.0) internal successors, (624), 6 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,017 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 229.0) internal successors, (1603), 7 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,017 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 58 flow. Second operand 6 states and 624 transitions. [2023-09-01 00:44:58,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 108 flow [2023-09-01 00:44:58,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 27 transitions, 100 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 00:44:58,019 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 54 flow [2023-09-01 00:44:58,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=54, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 00:44:58,021 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -8 predicate places. [2023-09-01 00:44:58,022 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 54 flow [2023-09-01 00:44:58,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:58,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:44:58,035 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 00:44:58,233 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 00:44:58,233 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:58,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:58,234 INFO L85 PathProgramCache]: Analyzing trace with hash 432850556, now seen corresponding path program 1 times [2023-09-01 00:44:58,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:58,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938673224] [2023-09-01 00:44:58,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:58,235 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-09-01 00:44:58,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:58,236 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 00:44:58,238 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 00:44:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:58,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 00:44:58,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:58,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 00:44:58,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 37 [2023-09-01 00:44:58,399 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 00:44:58,475 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 00:44:58,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:58,476 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:58,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938673224] [2023-09-01 00:44:58,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938673224] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:58,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:58,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:44:58,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199230386] [2023-09-01 00:44:58,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:58,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:44:58,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:58,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:44:58,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:44:58,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 229 [2023-09-01 00:44:58,677 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:58,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 229 [2023-09-01 00:44:58,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:58,836 INFO L130 PetriNetUnfolder]: 42/146 cut-off events. [2023-09-01 00:44:58,837 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 00:44:58,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 146 events. 42/146 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 571 event pairs, 13 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 265. Up to 65 conditions per place. [2023-09-01 00:44:58,838 INFO L137 encePairwiseOnDemand]: 223/229 looper letters, 23 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-09-01 00:44:58,838 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 135 flow [2023-09-01 00:44:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:44:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:44:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-09-01 00:44:58,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487627365356623 [2023-09-01 00:44:58,840 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-09-01 00:44:58,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-09-01 00:44:58,840 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:58,840 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-09-01 00:44:58,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,843 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,843 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 54 flow. Second operand 3 states and 335 transitions. [2023-09-01 00:44:58,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 135 flow [2023-09-01 00:44:58,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 00:44:58,844 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 82 flow [2023-09-01 00:44:58,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-09-01 00:44:58,845 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -8 predicate places. [2023-09-01 00:44:58,845 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 82 flow [2023-09-01 00:44:58,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:58,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:58,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:58,857 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 00:44:59,056 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 00:44:59,057 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:59,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1559734973, now seen corresponding path program 1 times [2023-09-01 00:44:59,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:59,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908156121] [2023-09-01 00:44:59,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:59,058 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 00:44:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:59,059 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 00:44:59,065 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 00:44:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:59,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 00:44:59,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:59,167 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-09-01 00:44:59,167 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 1 case distinctions, treesize of input 9 treesize of output 11 [2023-09-01 00:44:59,217 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 00:44:59,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:59,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:59,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908156121] [2023-09-01 00:44:59,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908156121] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:59,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:59,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:44:59,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476050370] [2023-09-01 00:44:59,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:59,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:44:59,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:59,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:44:59,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:44:59,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 229 [2023-09-01 00:44:59,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:59,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 229 [2023-09-01 00:44:59,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:59,376 INFO L130 PetriNetUnfolder]: 42/132 cut-off events. [2023-09-01 00:44:59,376 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 00:44:59,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 132 events. 42/132 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 481 event pairs, 39 based on Foata normal form. 14/138 useless extension candidates. Maximal degree in co-relation 290. Up to 107 conditions per place. [2023-09-01 00:44:59,377 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 17 selfloop transitions, 3 changer transitions 0/24 dead transitions. [2023-09-01 00:44:59,377 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 120 flow [2023-09-01 00:44:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:44:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:44:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 330 transitions. [2023-09-01 00:44:59,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48034934497816595 [2023-09-01 00:44:59,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 330 transitions. [2023-09-01 00:44:59,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 330 transitions. [2023-09-01 00:44:59,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:59,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 330 transitions. [2023-09-01 00:44:59,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,382 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,382 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 82 flow. Second operand 3 states and 330 transitions. [2023-09-01 00:44:59,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 120 flow [2023-09-01 00:44:59,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 24 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:44:59,384 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 76 flow [2023-09-01 00:44:59,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-09-01 00:44:59,384 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-09-01 00:44:59,385 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 76 flow [2023-09-01 00:44:59,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:59,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:59,397 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 00:44:59,595 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 00:44:59,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:44:59,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1559734972, now seen corresponding path program 1 times [2023-09-01 00:44:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:44:59,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [661091548] [2023-09-01 00:44:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:59,596 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 00:44:59,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:44:59,597 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 00:44:59,598 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 00:44:59,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:44:59,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 00:44:59,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:44:59,717 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-09-01 00:44:59,717 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 1 case distinctions, treesize of input 9 treesize of output 15 [2023-09-01 00:44:59,740 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 00:44:59,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:44:59,740 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:44:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [661091548] [2023-09-01 00:44:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [661091548] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:44:59,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:44:59,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:44:59,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049583824] [2023-09-01 00:44:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:44:59,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:44:59,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:44:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:44:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:44:59,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 229 [2023-09-01 00:44:59,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:44:59,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 229 [2023-09-01 00:44:59,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:44:59,892 INFO L130 PetriNetUnfolder]: 55/146 cut-off events. [2023-09-01 00:44:59,892 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-09-01 00:44:59,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 146 events. 55/146 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 502 event pairs, 51 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 323. Up to 135 conditions per place. [2023-09-01 00:44:59,894 INFO L137 encePairwiseOnDemand]: 226/229 looper letters, 18 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-09-01 00:44:59,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 23 transitions, 116 flow [2023-09-01 00:44:59,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:44:59,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:44:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 319 transitions. [2023-09-01 00:44:59,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4643377001455604 [2023-09-01 00:44:59,896 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 319 transitions. [2023-09-01 00:44:59,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 319 transitions. [2023-09-01 00:44:59,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:44:59,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 319 transitions. [2023-09-01 00:44:59,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,899 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 76 flow. Second operand 3 states and 319 transitions. [2023-09-01 00:44:59,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 23 transitions, 116 flow [2023-09-01 00:44:59,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 23 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:44:59,900 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 74 flow [2023-09-01 00:44:59,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-09-01 00:44:59,901 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -10 predicate places. [2023-09-01 00:44:59,901 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 74 flow [2023-09-01 00:44:59,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:44:59,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:59,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:59,917 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 00:45:00,116 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 00:45:00,116 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:45:00,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2069658324, now seen corresponding path program 1 times [2023-09-01 00:45:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:45:00,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1090408258] [2023-09-01 00:45:00,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:00,118 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 00:45:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:45:00,119 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 00:45:00,125 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 00:45:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:45:00,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 4 conjunts are in the unsatisfiable core [2023-09-01 00:45:00,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 00:45:00,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-09-01 00:45:00,251 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 00:45:00,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-09-01 00:45:00,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-09-01 00:45:00,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1090408258] [2023-09-01 00:45:00,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1090408258] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:45:00,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:45:00,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:45:00,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195216790] [2023-09-01 00:45:00,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:45:00,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:45:00,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-09-01 00:45:00,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:45:00,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:45:00,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 229 [2023-09-01 00:45:00,290 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:45:00,290 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:45:00,290 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 229 [2023-09-01 00:45:00,290 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:45:00,390 INFO L130 PetriNetUnfolder]: 28/109 cut-off events. [2023-09-01 00:45:00,391 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:45:00,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 109 events. 28/109 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 357 event pairs, 11 based on Foata normal form. 9/114 useless extension candidates. Maximal degree in co-relation 238. Up to 59 conditions per place. [2023-09-01 00:45:00,392 INFO L137 encePairwiseOnDemand]: 221/229 looper letters, 25 selfloop transitions, 8 changer transitions 0/35 dead transitions. [2023-09-01 00:45:00,392 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 35 transitions, 174 flow [2023-09-01 00:45:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:45:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:45:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-09-01 00:45:00,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48326055312954874 [2023-09-01 00:45:00,393 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-09-01 00:45:00,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-09-01 00:45:00,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:45:00,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-09-01 00:45:00,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:45:00,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:45:00,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 229.0) internal successors, (916), 4 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:45:00,396 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 74 flow. Second operand 3 states and 332 transitions. [2023-09-01 00:45:00,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 35 transitions, 174 flow [2023-09-01 00:45:00,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 168 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:45:00,398 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 112 flow [2023-09-01 00:45:00,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=229, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-09-01 00:45:00,398 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -9 predicate places. [2023-09-01 00:45:00,398 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 112 flow [2023-09-01 00:45:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:45:00,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:00,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:00,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-09-01 00:45:00,599 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 00:45:00,599 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-09-01 00:45:00,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:00,600 INFO L85 PathProgramCache]: Analyzing trace with hash -264401163, now seen corresponding path program 1 times [2023-09-01 00:45:00,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-09-01 00:45:00,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [693856406] [2023-09-01 00:45:00,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:00,601 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 00:45:00,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-09-01 00:45:00,603 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 00:45:00,624 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 00:45:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:00,749 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:00,871 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-09-01 00:45:00,871 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:00,872 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (24 of 25 remaining) [2023-09-01 00:45:00,873 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (17 of 25 remaining) [2023-09-01 00:45:00,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 25 remaining) [2023-09-01 00:45:00,879 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 25 remaining) [2023-09-01 00:45:00,880 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 25 remaining) [2023-09-01 00:45:00,881 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 25 remaining) [2023-09-01 00:45:00,921 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 00:45:01,082 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 00:45:01,082 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:01,086 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:45:01,086 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:45:01,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:45:01 BasicIcfg [2023-09-01 00:45:01,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:45:01,111 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:45:01,111 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:45:01,111 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:45:01,112 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:44:40" (3/4) ... [2023-09-01 00:45:01,114 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 00:45:01,114 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:45:01,114 INFO L158 Benchmark]: Toolchain (without parser) took 21927.31ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 45.1MB in the beginning and 54.2MB in the end (delta: -9.1MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-09-01 00:45:01,114 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:45:01,115 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.95ms. Allocated memory is still 69.2MB. Free memory was 44.9MB in the beginning and 38.0MB in the end (delta: 6.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. [2023-09-01 00:45:01,115 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.84ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 35.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:45:01,115 INFO L158 Benchmark]: Boogie Preprocessor took 26.26ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 33.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:45:01,115 INFO L158 Benchmark]: RCFGBuilder took 556.82ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 33.9MB in the beginning and 44.6MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 00:45:01,116 INFO L158 Benchmark]: TraceAbstraction took 20671.84ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 54.2MB in the end (delta: -10.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. [2023-09-01 00:45:01,116 INFO L158 Benchmark]: Witness Printer took 2.75ms. Allocated memory is still 83.9MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:45:01,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 54.5MB. Free memory is still 32.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.95ms. Allocated memory is still 69.2MB. Free memory was 44.9MB in the beginning and 38.0MB in the end (delta: 6.9MB). Peak memory consumption was 15.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.84ms. Allocated memory is still 69.2MB. Free memory was 38.0MB in the beginning and 35.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 26.26ms. Allocated memory is still 69.2MB. Free memory was 35.9MB in the beginning and 33.9MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 556.82ms. Allocated memory was 69.2MB in the beginning and 83.9MB in the end (delta: 14.7MB). Free memory was 33.9MB in the beginning and 44.6MB in the end (delta: -10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20671.84ms. Allocated memory is still 83.9MB. Free memory was 43.8MB in the beginning and 54.2MB in the end (delta: -10.4MB). Peak memory consumption was 27.2MB. Max. memory is 16.1GB. * Witness Printer took 2.75ms. Allocated memory is still 83.9MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 14.2s, 111 PlacesBefore, 38 PlacesAfterwards, 116 TransitionsBefore, 42 TransitionsAfterwards, 2132 CoEnabledTransitionPairs, 7 FixpointIterations, 51 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 1 ChoiceCompositions, 108 TotalNumberOfCompositions, 4685 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2492, independent: 2329, independent conditional: 0, independent unconditional: 2329, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1222, independent: 1189, independent conditional: 0, independent unconditional: 1189, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2492, independent: 1140, independent conditional: 0, independent unconditional: 1140, dependent: 130, dependent conditional: 0, dependent unconditional: 130, unknown: 1222, unknown conditional: 0, unknown unconditional: 1222] , Statistics on independence cache: Total cache size (in pairs): 100, Positive cache size: 83, Positive conditional cache size: 0, Positive unconditional cache size: 83, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 691]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 691. Possible FailurePath: [L696] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L697] 0 pthread_mutex_t mutex1 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L698] 0 pthread_mutex_t mutex2 = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L707] 0 pthread_t id; [L708] 0 int i = 0; [L709] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, (void *) &i) VAL [__global_lock={3:0}, arg={7:0}, i={7:0}, id={9:0}, mutex1={4:0}, mutex2={5:0}, pthread_create(&id, ((void *)0), t_fun, (void *) &i)=-1] [L700] 1 int *p = (int *) arg; [L702] EXPR 1 \read(*p) [L702] 1 (*p)++ [L711] EXPR 0 \read(i) [L711] CALL 0 __VERIFIER_assert((i) == 0) [L691] COND TRUE 0 !(cond) [L691] 0 reach_error() VAL [\old(cond)=0, __global_lock={3:0}, arg={7:0}, arg={7:0}, cond=0, mutex1={4:0}, mutex2={5:0}, p={7:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 706]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 709]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 150 locations, 25 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 443 mSDsluCounter, 107 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 44 mSDsCounter, 58 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 848 IncrementalHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 58 mSolverCounterUnsat, 63 mSDtfsCounter, 848 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=9, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 59 NumberOfCodeBlocks, 59 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 380 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1068 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-09-01 00:45:01,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample