./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 23:53:50,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:53:50,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:53:50,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:53:50,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:53:50,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:53:50,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:53:50,593 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:53:50,595 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:53:50,598 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:53:50,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:53:50,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:53:50,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:53:50,603 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:53:50,604 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:53:50,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:53:50,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:53:50,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:53:50,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:53:50,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:53:50,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:53:50,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:53:50,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:53:50,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:53:50,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:53:50,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:53:50,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:53:50,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:53:50,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:53:50,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:53:50,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:53:50,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:53:50,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:53:50,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:53:50,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:53:50,638 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:53:50,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:53:50,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:53:50,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:53:50,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:53:50,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:53:50,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:53:50,667 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:53:50,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:53:50,669 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:53:50,669 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:53:50,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:53:50,670 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:53:50,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:53:50,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:53:50,670 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:53:50,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:53:50,671 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:53:50,671 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:53:50,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:53:50,672 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:53:50,673 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:53:50,673 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:53:50,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:53:50,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:53:50,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:53:50,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:53:50,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:53:50,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:53:50,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:53:50,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:53:50,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:53:50,674 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:53:50,675 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:53:50,675 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:53:50,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:53:50,907 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:53:50,923 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:53:50,924 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:53:50,925 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:53:50,925 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:53:50,927 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-08-29 23:53:51,928 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:53:52,045 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:53:52,046 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-08-29 23:53:52,058 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2c00b94/873ce3615bd6487e932884ac0fcb4644/FLAG649c820ff [2023-08-29 23:53:52,069 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac2c00b94/873ce3615bd6487e932884ac0fcb4644 [2023-08-29 23:53:52,071 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:53:52,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:53:52,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:53:52,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:53:52,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:53:52,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:53:52" (1/1) ... [2023-08-29 23:53:52,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f73dbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:52, skipping insertion in model container [2023-08-29 23:53:52,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:53:52" (1/1) ... [2023-08-29 23:53:52,083 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:53:52,104 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:53:52,224 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-08-29 23:53:52,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:53:52,238 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) [2023-08-29 23:53:52,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2e67aba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:52, skipping insertion in model container [2023-08-29 23:53:52,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:53:52,239 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-08-29 23:53:52,240 INFO L158 Benchmark]: Toolchain (without parser) took 167.34ms. Allocated memory is still 69.2MB. Free memory was 39.1MB in the beginning and 44.5MB in the end (delta: -5.3MB). Peak memory consumption was 7.0MB. Max. memory is 16.1GB. [2023-08-29 23:53:52,240 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 23:53:52,241 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.08ms. Allocated memory is still 69.2MB. Free memory was 38.9MB in the beginning and 44.5MB in the end (delta: -5.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-08-29 23:53:52,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 34.6MB in the beginning and 34.5MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.08ms. Allocated memory is still 69.2MB. Free memory was 38.9MB in the beginning and 44.5MB in the end (delta: -5.6MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 94]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 23:53:53,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:53:53,703 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:53:53,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:53:53,750 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:53:53,753 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:53:53,756 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:53:53,759 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:53:53,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:53:53,766 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:53:53,767 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:53:53,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:53:53,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:53:53,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:53:53,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:53:53,773 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:53:53,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:53:53,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:53:53,776 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:53:53,778 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:53:53,781 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:53:53,785 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:53:53,786 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:53:53,787 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:53:53,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:53:53,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:53:53,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:53:53,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:53:53,794 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:53:53,795 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:53:53,795 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:53:53,796 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:53:53,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:53:53,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:53:53,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:53:53,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:53:53,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:53:53,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:53:53,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:53:53,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:53:53,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:53:53,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-29 23:53:53,824 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:53:53,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:53:53,826 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:53:53,826 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:53:53,826 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:53:53,826 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:53:53,827 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:53:53,827 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:53:53,827 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:53:53,827 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:53:53,828 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:53:53,828 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:53:53,828 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:53:53,829 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:53:53,830 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-29 23:53:53,830 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-29 23:53:53,830 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:53:53,830 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:53:53,830 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:53:53,830 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:53:53,830 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:53:53,831 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:53:53,831 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:53:53,831 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:53:53,831 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-29 23:53:53,831 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-29 23:53:53,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:53:53,832 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:53:53,832 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:53:53,832 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-29 23:53:53,832 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:53:53,832 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e280ea7002eb926faba3195da50aa743246f3289123bb9a1b445dc9aaf8e8f3d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:53:54,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:53:54,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:53:54,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:53:54,076 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:53:54,076 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:53:54,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-08-29 23:53:54,949 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:53:55,128 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:53:55,128 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c [2023-08-29 23:53:55,132 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448f7f1ba/c4842abcde5d423d8c4b949d7eb3cca6/FLAGaf3b7cd1a [2023-08-29 23:53:55,504 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448f7f1ba/c4842abcde5d423d8c4b949d7eb3cca6 [2023-08-29 23:53:55,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:53:55,509 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:53:55,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:53:55,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:53:55,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:53:55,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131d11c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55, skipping insertion in model container [2023-08-29 23:53:55,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:53:55,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:53:55,628 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-08-29 23:53:55,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:53:55,641 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-08-29 23:53:55,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:53:55,657 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-08-29 23:53:55,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:53:55,672 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:53:55,687 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product-alt.wvr.c[3182,3195] [2023-08-29 23:53:55,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:53:55,707 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:53:55,707 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 23:53:55,717 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:53:55,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55 WrapperNode [2023-08-29 23:53:55,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:53:55,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:53:55,718 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:53:55,718 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:53:55,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,744 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,778 INFO L138 Inliner]: procedures = 30, calls = 74, calls flagged for inlining = 18, calls inlined = 26, statements flattened = 359 [2023-08-29 23:53:55,779 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:53:55,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:53:55,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:53:55,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:53:55,786 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,796 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,801 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,815 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,827 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,828 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:53:55,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:53:55,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:53:55,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:53:55,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (1/1) ... [2023-08-29 23:53:55,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:53:55,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:53:55,899 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) [2023-08-29 23:53:55,934 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 [2023-08-29 23:53:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:53:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-08-29 23:53:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 23:53:55,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:53:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-29 23:53:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 23:53:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:53:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:53:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:53:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:53:55,957 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:53:55,957 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:53:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 23:53:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 23:53:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 23:53:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:53:55,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:53:55,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:53:55,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-29 23:53:55,960 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 23:53:56,115 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:53:56,117 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:53:56,851 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:53:57,046 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:53:57,047 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-29 23:53:57,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:53:57 BoogieIcfgContainer [2023-08-29 23:53:57,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:53:57,052 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:53:57,052 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:53:57,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:53:57,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:53:55" (1/3) ... [2023-08-29 23:53:57,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faee605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:53:57, skipping insertion in model container [2023-08-29 23:53:57,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:53:55" (2/3) ... [2023-08-29 23:53:57,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1faee605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:53:57, skipping insertion in model container [2023-08-29 23:53:57,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:53:57" (3/3) ... [2023-08-29 23:53:57,057 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-08-29 23:53:57,068 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:53:57,068 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 70 error locations. [2023-08-29 23:53:57,068 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:53:57,218 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 23:53:57,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 370 places, 395 transitions, 814 flow [2023-08-29 23:53:57,350 INFO L130 PetriNetUnfolder]: 35/392 cut-off events. [2023-08-29 23:53:57,363 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:53:57,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 392 events. 35/392 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1070 event pairs, 0 based on Foata normal form. 0/287 useless extension candidates. Maximal degree in co-relation 302. Up to 2 conditions per place. [2023-08-29 23:53:57,370 INFO L82 GeneralOperation]: Start removeDead. Operand has 370 places, 395 transitions, 814 flow [2023-08-29 23:53:57,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 388 transitions, 794 flow [2023-08-29 23:53:57,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:53:57,385 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 388 transitions, 794 flow [2023-08-29 23:53:57,387 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 388 transitions, 794 flow [2023-08-29 23:53:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 388 transitions, 794 flow [2023-08-29 23:53:57,449 INFO L130 PetriNetUnfolder]: 35/388 cut-off events. [2023-08-29 23:53:57,449 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:53:57,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 388 events. 35/388 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1064 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 302. Up to 2 conditions per place. [2023-08-29 23:53:57,459 INFO L119 LiptonReduction]: Number of co-enabled transitions 24090 [2023-08-29 23:55:16,099 INFO L134 LiptonReduction]: Checked pairs total: 37816 [2023-08-29 23:55:16,100 INFO L136 LiptonReduction]: Total number of compositions: 477 [2023-08-29 23:55:16,115 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:55:16,119 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;@4d6c6d94, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:55:16,119 INFO L358 AbstractCegarLoop]: Starting to check reachability of 121 error locations. [2023-08-29 23:55:16,121 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2023-08-29 23:55:16,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:55:16,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:55:16,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 23:55:16,122 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-29 23:55:16,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:55:16,125 INFO L85 PathProgramCache]: Analyzing trace with hash 58542, now seen corresponding path program 1 times [2023-08-29 23:55:16,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 23:55:16,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533163722] [2023-08-29 23:55:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:55:16,133 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 [2023-08-29 23:55:16,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 23:55:16,136 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) [2023-08-29 23:55:16,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-08-29 23:55:16,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:55:16,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 23:55:16,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:55:16,350 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2023-08-29 23:55:16,351 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 3 case distinctions, treesize of input 15 treesize of output 50 [2023-08-29 23:55:16,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:55:16,388 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 23:55:16,388 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 23:55:16,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533163722] [2023-08-29 23:55:16,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533163722] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:55:16,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:55:16,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:55:16,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349882081] [2023-08-29 23:55:16,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:55:16,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:55:16,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 23:55:16,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:55:16,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:55:16,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 333 out of 872 [2023-08-29 23:55:16,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 110 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:16,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:55:16,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 333 of 872 [2023-08-29 23:55:16,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:55:25,605 INFO L130 PetriNetUnfolder]: 70595/88893 cut-off events. [2023-08-29 23:55:25,606 INFO L131 PetriNetUnfolder]: For 857/857 co-relation queries the response was YES. [2023-08-29 23:55:25,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178713 conditions, 88893 events. 70595/88893 cut-off events. For 857/857 co-relation queries the response was YES. Maximal size of possible extension queue 6286. Compared 526214 event pairs, 44649 based on Foata normal form. 0/19155 useless extension candidates. Maximal degree in co-relation 171375. Up to 88832 conditions per place. [2023-08-29 23:55:26,047 INFO L137 encePairwiseOnDemand]: 850/872 looper letters, 85 selfloop transitions, 1 changer transitions 0/89 dead transitions. [2023-08-29 23:55:26,047 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 89 transitions, 368 flow [2023-08-29 23:55:26,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:55:26,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:55:26,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1106 transitions. [2023-08-29 23:55:26,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.422782874617737 [2023-08-29 23:55:26,069 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1106 transitions. [2023-08-29 23:55:26,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1106 transitions. [2023-08-29 23:55:26,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:55:26,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1106 transitions. [2023-08-29 23:55:26,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 368.6666666666667) internal successors, (1106), 3 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:26,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:26,090 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:26,093 INFO L175 Difference]: Start difference. First operand has 110 places, 110 transitions, 238 flow. Second operand 3 states and 1106 transitions. [2023-08-29 23:55:26,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 89 transitions, 368 flow [2023-08-29 23:55:26,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 89 transitions, 356 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 23:55:26,166 INFO L231 Difference]: Finished difference. Result has 86 places, 89 transitions, 186 flow [2023-08-29 23:55:26,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=86, PETRI_TRANSITIONS=89} [2023-08-29 23:55:26,171 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -24 predicate places. [2023-08-29 23:55:26,171 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 89 transitions, 186 flow [2023-08-29 23:55:26,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 333.6666666666667) internal successors, (1001), 3 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:26,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:55:26,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 23:55:26,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-08-29 23:55:26,379 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 [2023-08-29 23:55:26,379 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-29 23:55:26,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:55:26,385 INFO L85 PathProgramCache]: Analyzing trace with hash 58541, now seen corresponding path program 1 times [2023-08-29 23:55:26,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 23:55:26,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407189284] [2023-08-29 23:55:26,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:55:26,386 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 [2023-08-29 23:55:26,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 23:55:26,389 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) [2023-08-29 23:55:26,390 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 [2023-08-29 23:55:26,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:55:26,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 23:55:26,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:55:26,546 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-29 23:55:26,547 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-08-29 23:55:26,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:55:26,575 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 23:55:26,575 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 23:55:26,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407189284] [2023-08-29 23:55:26,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407189284] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:55:26,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:55:26,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:55:26,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148414745] [2023-08-29 23:55:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:55:26,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:55:26,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 23:55:26,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:55:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:55:26,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 332 out of 872 [2023-08-29 23:55:26,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 89 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:26,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:55:26,984 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 332 of 872 [2023-08-29 23:55:26,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:55:42,558 INFO L130 PetriNetUnfolder]: 141054/177647 cut-off events. [2023-08-29 23:55:42,558 INFO L131 PetriNetUnfolder]: For 268/268 co-relation queries the response was YES. [2023-08-29 23:55:42,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 355932 conditions, 177647 events. 141054/177647 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 10486. Compared 1104620 event pairs, 89218 based on Foata normal form. 0/38483 useless extension candidates. Maximal degree in co-relation 355926. Up to 88834 conditions per place. [2023-08-29 23:55:43,259 INFO L137 encePairwiseOnDemand]: 862/872 looper letters, 161 selfloop transitions, 7 changer transitions 0/171 dead transitions. [2023-08-29 23:55:43,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 171 transitions, 692 flow [2023-08-29 23:55:43,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:55:43,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:55:43,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1167 transitions. [2023-08-29 23:55:43,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4461009174311927 [2023-08-29 23:55:43,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1167 transitions. [2023-08-29 23:55:43,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1167 transitions. [2023-08-29 23:55:43,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:55:43,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1167 transitions. [2023-08-29 23:55:43,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 389.0) internal successors, (1167), 3 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:43,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:43,270 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:43,270 INFO L175 Difference]: Start difference. First operand has 86 places, 89 transitions, 186 flow. Second operand 3 states and 1167 transitions. [2023-08-29 23:55:43,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 171 transitions, 692 flow [2023-08-29 23:55:43,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 171 transitions, 691 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:55:43,273 INFO L231 Difference]: Finished difference. Result has 89 places, 95 transitions, 243 flow [2023-08-29 23:55:43,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=89, PETRI_TRANSITIONS=95} [2023-08-29 23:55:43,274 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -21 predicate places. [2023-08-29 23:55:43,274 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 95 transitions, 243 flow [2023-08-29 23:55:43,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 332.6666666666667) internal successors, (998), 3 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:43,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:55:43,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:55:43,285 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 [2023-08-29 23:55:43,481 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 [2023-08-29 23:55:43,482 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-29 23:55:43,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:55:43,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1820519, now seen corresponding path program 1 times [2023-08-29 23:55:43,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 23:55:43,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1077382631] [2023-08-29 23:55:43,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:55:43,483 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 [2023-08-29 23:55:43,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 23:55:43,485 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) [2023-08-29 23:55:43,486 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 [2023-08-29 23:55:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:55:43,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-29 23:55:43,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:55:43,620 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2023-08-29 23:55:43,620 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 3 case distinctions, treesize of input 17 treesize of output 44 [2023-08-29 23:55:43,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:55:43,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:55:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:55:43,781 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 23:55:43,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1077382631] [2023-08-29 23:55:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1077382631] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:55:43,782 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:55:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-08-29 23:55:43,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585567599] [2023-08-29 23:55:43,782 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 23:55:43,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 23:55:43,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 23:55:43,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 23:55:43,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:55:45,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 317 out of 872 [2023-08-29 23:55:45,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 95 transitions, 243 flow. Second operand has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:55:45,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:55:45,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 317 of 872 [2023-08-29 23:55:45,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:56:11,119 INFO L130 PetriNetUnfolder]: 211523/266417 cut-off events. [2023-08-29 23:56:11,119 INFO L131 PetriNetUnfolder]: For 388/388 co-relation queries the response was YES. [2023-08-29 23:56:11,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 533830 conditions, 266417 events. 211523/266417 cut-off events. For 388/388 co-relation queries the response was YES. Maximal size of possible extension queue 16345. Compared 1731924 event pairs, 133787 based on Foata normal form. 0/57830 useless extension candidates. Maximal degree in co-relation 533821. Up to 88836 conditions per place. [2023-08-29 23:56:12,185 INFO L137 encePairwiseOnDemand]: 859/872 looper letters, 237 selfloop transitions, 29 changer transitions 0/269 dead transitions. [2023-08-29 23:56:12,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 269 transitions, 1175 flow [2023-08-29 23:56:12,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:56:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:56:12,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2177 transitions. [2023-08-29 23:56:12,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4160932721712538 [2023-08-29 23:56:12,190 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2177 transitions. [2023-08-29 23:56:12,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2177 transitions. [2023-08-29 23:56:12,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:56:12,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2177 transitions. [2023-08-29 23:56:12,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 362.8333333333333) internal successors, (2177), 6 states have internal predecessors, (2177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:12,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 872.0) internal successors, (6104), 7 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:12,202 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 872.0) internal successors, (6104), 7 states have internal predecessors, (6104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:12,202 INFO L175 Difference]: Start difference. First operand has 89 places, 95 transitions, 243 flow. Second operand 6 states and 2177 transitions. [2023-08-29 23:56:12,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 269 transitions, 1175 flow [2023-08-29 23:56:12,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 269 transitions, 1153 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 23:56:12,205 INFO L231 Difference]: Finished difference. Result has 96 places, 117 transitions, 448 flow [2023-08-29 23:56:12,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=96, PETRI_TRANSITIONS=117} [2023-08-29 23:56:12,206 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -14 predicate places. [2023-08-29 23:56:12,206 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 117 transitions, 448 flow [2023-08-29 23:56:12,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 318.0) internal successors, (1908), 6 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:12,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:56:12,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 23:56:12,214 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 [2023-08-29 23:56:12,414 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 [2023-08-29 23:56:12,414 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-29 23:56:12,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:56:12,415 INFO L85 PathProgramCache]: Analyzing trace with hash 56536170, now seen corresponding path program 1 times [2023-08-29 23:56:12,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 23:56:12,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327351618] [2023-08-29 23:56:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:56:12,415 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 [2023-08-29 23:56:12,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 23:56:12,416 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) [2023-08-29 23:56:12,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-08-29 23:56:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:56:12,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:56:12,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:56:12,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:56:12,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 23:56:12,526 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 23:56:12,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327351618] [2023-08-29 23:56:12,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327351618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:56:12,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:56:12,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:56:12,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96807681] [2023-08-29 23:56:12,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:56:12,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:56:12,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 23:56:12,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:56:12,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:56:12,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 872 [2023-08-29 23:56:12,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 117 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:12,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:56:12,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 872 [2023-08-29 23:56:12,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:56:36,685 INFO L130 PetriNetUnfolder]: 211802/266713 cut-off events. [2023-08-29 23:56:36,685 INFO L131 PetriNetUnfolder]: For 462/462 co-relation queries the response was YES. [2023-08-29 23:56:37,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534570 conditions, 266713 events. 211802/266713 cut-off events. For 462/462 co-relation queries the response was YES. Maximal size of possible extension queue 16749. Compared 1743453 event pairs, 133947 based on Foata normal form. 5/57509 useless extension candidates. Maximal degree in co-relation 534557. Up to 266498 conditions per place. [2023-08-29 23:56:37,930 INFO L137 encePairwiseOnDemand]: 863/872 looper letters, 124 selfloop transitions, 10 changer transitions 0/137 dead transitions. [2023-08-29 23:56:37,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 137 transitions, 849 flow [2023-08-29 23:56:37,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:56:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:56:37,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1775 transitions. [2023-08-29 23:56:37,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40711009174311924 [2023-08-29 23:56:37,952 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1775 transitions. [2023-08-29 23:56:37,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1775 transitions. [2023-08-29 23:56:37,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:56:37,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1775 transitions. [2023-08-29 23:56:37,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 355.0) internal successors, (1775), 5 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:37,960 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 872.0) internal successors, (5232), 6 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:37,962 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 872.0) internal successors, (5232), 6 states have internal predecessors, (5232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:37,962 INFO L175 Difference]: Start difference. First operand has 96 places, 117 transitions, 448 flow. Second operand 5 states and 1775 transitions. [2023-08-29 23:56:37,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 137 transitions, 849 flow [2023-08-29 23:56:37,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 137 transitions, 803 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-08-29 23:56:37,967 INFO L231 Difference]: Finished difference. Result has 102 places, 119 transitions, 474 flow [2023-08-29 23:56:37,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=413, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=474, PETRI_PLACES=102, PETRI_TRANSITIONS=119} [2023-08-29 23:56:37,968 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -8 predicate places. [2023-08-29 23:56:37,968 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 119 transitions, 474 flow [2023-08-29 23:56:37,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:37,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:56:37,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:56:37,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2023-08-29 23:56:38,175 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 [2023-08-29 23:56:38,176 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-29 23:56:38,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:56:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1752623611, now seen corresponding path program 1 times [2023-08-29 23:56:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 23:56:38,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492715485] [2023-08-29 23:56:38,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:56:38,177 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 [2023-08-29 23:56:38,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 23:56:38,181 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) [2023-08-29 23:56:38,182 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 [2023-08-29 23:56:38,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:56:38,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-29 23:56:38,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:56:38,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 23:56:38,291 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-08-29 23:56:38,291 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-08-29 23:56:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:56:38,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 23:56:38,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 23:56:38,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492715485] [2023-08-29 23:56:38,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492715485] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:56:38,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:56:38,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 23:56:38,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130960741] [2023-08-29 23:56:38,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:56:38,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:56:38,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 23:56:38,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:56:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:56:38,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 872 [2023-08-29 23:56:38,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 119 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:56:38,485 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:56:38,485 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 872 [2023-08-29 23:56:38,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:56:58,919 INFO L130 PetriNetUnfolder]: 174349/219666 cut-off events. [2023-08-29 23:56:58,919 INFO L131 PetriNetUnfolder]: For 417/417 co-relation queries the response was YES. [2023-08-29 23:56:59,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440357 conditions, 219666 events. 174349/219666 cut-off events. For 417/417 co-relation queries the response was YES. Maximal size of possible extension queue 13363. Compared 1408558 event pairs, 109404 based on Foata normal form. 0/49600 useless extension candidates. Maximal degree in co-relation 440340. Up to 219465 conditions per place. [2023-08-29 23:56:59,985 INFO L137 encePairwiseOnDemand]: 867/872 looper letters, 104 selfloop transitions, 6 changer transitions 0/113 dead transitions. [2023-08-29 23:56:59,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 113 transitions, 670 flow [2023-08-29 23:56:59,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:56:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:57:00,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1109 transitions. [2023-08-29 23:57:00,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4239296636085627 [2023-08-29 23:57:00,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1109 transitions. [2023-08-29 23:57:00,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1109 transitions. [2023-08-29 23:57:00,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:57:00,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1109 transitions. [2023-08-29 23:57:00,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:57:00,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:57:00,025 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 872.0) internal successors, (3488), 4 states have internal predecessors, (3488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:57:00,025 INFO L175 Difference]: Start difference. First operand has 102 places, 119 transitions, 474 flow. Second operand 3 states and 1109 transitions. [2023-08-29 23:57:00,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 113 transitions, 670 flow [2023-08-29 23:57:00,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 668 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 23:57:00,029 INFO L231 Difference]: Finished difference. Result has 100 places, 113 transitions, 460 flow [2023-08-29 23:57:00,029 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=872, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=460, PETRI_PLACES=100, PETRI_TRANSITIONS=113} [2023-08-29 23:57:00,031 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -10 predicate places. [2023-08-29 23:57:00,031 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 113 transitions, 460 flow [2023-08-29 23:57:00,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 342.6666666666667) internal successors, (1028), 3 states have internal predecessors, (1028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:57:00,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:57:00,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:57:00,061 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 [2023-08-29 23:57:00,238 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 [2023-08-29 23:57:00,238 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 118 more)] === [2023-08-29 23:57:00,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:57:00,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1752623610, now seen corresponding path program 1 times [2023-08-29 23:57:00,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-08-29 23:57:00,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696731327] [2023-08-29 23:57:00,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:57:00,240 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 [2023-08-29 23:57:00,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-08-29 23:57:00,243 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) [2023-08-29 23:57:00,243 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 [2023-08-29 23:57:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:57:00,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-29 23:57:00,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:57:00,348 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-08-29 23:57:00,355 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-08-29 23:57:00,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 23:57:00,389 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-29 23:57:00,404 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-08-29 23:57:00,404 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-08-29 23:57:00,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:57:00,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 23:57:00,423 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-08-29 23:57:00,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696731327] [2023-08-29 23:57:00,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696731327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:57:00,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:57:00,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:57:00,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071564801] [2023-08-29 23:57:00,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:57:00,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:57:00,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-08-29 23:57:00,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:57:00,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:57:01,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 872 [2023-08-29 23:57:01,142 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 113 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 332.25) internal successors, (1329), 4 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:57:01,142 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:57:01,142 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 872 [2023-08-29 23:57:01,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand