./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:41:32,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:41:32,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 00:41:32,561 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:41:32,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:41:32,590 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:41:32,591 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:41:32,592 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:41:32,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:41:32,593 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:41:32,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:41:32,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:41:32,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:41:32,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:41:32,596 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:41:32,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:41:32,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:41:32,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:41:32,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:41:32,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:41:32,599 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:41:32,600 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:41:32,600 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:41:32,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:41:32,601 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:41:32,601 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:41:32,602 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:41:32,602 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:41:32,612 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:41:32,612 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:41:32,612 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:41:32,613 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:41:32,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:32,614 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:41:32,614 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:41:32,615 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:41:32,615 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:41:32,615 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:41:32,615 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:41:32,616 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:41:32,616 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:41:32,616 INFO L153 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-29 00:41:32,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:41:32,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:41:32,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:41:32,921 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:41:32,922 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:41:32,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-29 00:41:36,019 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:41:36,214 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:41:36,215 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-29 00:41:36,224 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data/4cb00ee27/9a9f01f4894c4d6cb0b1fe559fa2ebb7/FLAG5a663c6e3 [2023-11-29 00:41:36,239 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data/4cb00ee27/9a9f01f4894c4d6cb0b1fe559fa2ebb7 [2023-11-29 00:41:36,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:41:36,243 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:41:36,244 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:36,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:41:36,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:41:36,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:36" (1/1) ... [2023-11-29 00:41:36,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@709bb15d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:36, skipping insertion in model container [2023-11-29 00:41:36,251 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:36" (1/1) ... [2023-11-29 00:41:36,276 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:41:36,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:36,466 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) [2023-11-29 00:41:36,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@69678dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:36, skipping insertion in model container [2023-11-29 00:41:36,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:36,467 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 00:41:36,470 INFO L158 Benchmark]: Toolchain (without parser) took 225.91ms. Allocated memory is still 146.8MB. Free memory was 108.2MB in the beginning and 98.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:41:36,470 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 146.8MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:41:36,471 INFO L158 Benchmark]: CACSL2BoogieTranslator took 223.62ms. Allocated memory is still 146.8MB. Free memory was 108.2MB in the beginning and 98.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-29 00:41:36,473 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 146.8MB. Free memory is still 114.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 223.62ms. Allocated memory is still 146.8MB. Free memory was 108.2MB in the beginning and 98.6MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --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 b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:41:38,461 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:41:38,543 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 00:41:38,549 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:41:38,549 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:41:38,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:41:38,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:41:38,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:41:38,592 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:41:38,592 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:41:38,593 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:41:38,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:41:38,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:41:38,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:41:38,596 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:41:38,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:41:38,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:41:38,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:41:38,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:41:38,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:41:38,600 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 00:41:38,601 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 00:41:38,602 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 00:41:38,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:41:38,603 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 00:41:38,604 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 00:41:38,605 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 00:41:38,605 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 00:41:38,606 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:41:38,606 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:41:38,607 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:41:38,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:41:38,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:41:38,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:41:38,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:38,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:41:38,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:41:38,609 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 00:41:38,610 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 00:41:38,610 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:41:38,610 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:41:38,611 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:41:38,611 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:41:38,611 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 00:41:38,611 INFO L153 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b034d85232772d264d33ccb960d3ce3e7bf57df858fd0c6fd0b22127388c3f9a [2023-11-29 00:41:38,993 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:41:39,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:41:39,025 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:41:39,027 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:41:39,027 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:41:39,029 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-29 00:41:42,081 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:41:42,269 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:41:42,270 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2023-11-29 00:41:42,279 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data/d0bdf34fa/029c6a02e8f244678bf1835c7af03553/FLAGcdcf52b31 [2023-11-29 00:41:42,296 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/data/d0bdf34fa/029c6a02e8f244678bf1835c7af03553 [2023-11-29 00:41:42,299 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:41:42,300 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:41:42,302 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:42,302 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:41:42,308 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:41:42,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3277160e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42, skipping insertion in model container [2023-11-29 00:41:42,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,340 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:41:42,560 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:42,575 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 00:41:42,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:41:42,597 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:42,603 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:41:42,631 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:41:42,650 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:41:42,650 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42 WrapperNode [2023-11-29 00:41:42,650 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:41:42,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:42,652 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:41:42,652 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:41:42,659 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,672 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,702 INFO L138 Inliner]: procedures = 26, calls = 36, calls flagged for inlining = 10, calls inlined = 12, statements flattened = 179 [2023-11-29 00:41:42,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:41:42,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:41:42,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:41:42,704 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:41:42,717 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,722 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,743 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 2, 10, 2]. 63 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 2, 1]. [2023-11-29 00:41:42,743 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,743 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,755 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,760 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,764 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,769 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:41:42,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:41:42,770 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:41:42,770 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:41:42,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (1/1) ... [2023-11-29 00:41:42,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:41:42,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:41:42,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:41:42,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:41:42,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:41:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 00:41:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 00:41:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 00:41:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 00:41:42,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:41:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 00:41:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 00:41:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 00:41:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 00:41:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 00:41:42,847 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 00:41:42,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 00:41:42,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 00:41:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 00:41:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:41:42,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:41:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:41:42,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 00:41:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 00:41:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 00:41:42,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 00:41:42,851 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:41:42,978 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:41:42,980 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:41:43,593 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:41:43,842 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:41:43,842 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 00:41:43,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:43 BoogieIcfgContainer [2023-11-29 00:41:43,843 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:41:43,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:41:43,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:41:43,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:41:43,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:41:42" (1/3) ... [2023-11-29 00:41:43,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59427356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:43, skipping insertion in model container [2023-11-29 00:41:43,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:41:42" (2/3) ... [2023-11-29 00:41:43,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59427356 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:41:43, skipping insertion in model container [2023-11-29 00:41:43,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:41:43" (3/3) ... [2023-11-29 00:41:43,852 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2023-11-29 00:41:43,873 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:41:43,873 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-29 00:41:43,873 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:41:43,952 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 00:41:43,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 79 transitions, 172 flow [2023-11-29 00:41:44,041 INFO L124 PetriNetUnfolderBase]: 8/77 cut-off events. [2023-11-29 00:41:44,042 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 00:41:44,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 77 events. 8/77 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 243 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 53. Up to 2 conditions per place. [2023-11-29 00:41:44,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 79 transitions, 172 flow [2023-11-29 00:41:44,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 76 transitions, 164 flow [2023-11-29 00:41:44,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:41:44,068 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;@2d94d14f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:41:44,068 INFO L358 AbstractCegarLoop]: Starting to check reachability of 48 error locations. [2023-11-29 00:41:44,072 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:41:44,072 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-29 00:41:44,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:41:44,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:44,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:41:44,073 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:41:44,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:44,079 INFO L85 PathProgramCache]: Analyzing trace with hash 553917, now seen corresponding path program 1 times [2023-11-29 00:41:44,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:44,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [648013328] [2023-11-29 00:41:44,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:44,092 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 [2023-11-29 00:41:44,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:44,095 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:41:44,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:44,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:41:44,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:44,275 INFO L378 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 [2023-11-29 00:41:44,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:44,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:44,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:44,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:41:44,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:44,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:44,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:44,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:44,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:44,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:41:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:44,355 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:44,355 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [648013328] [2023-11-29 00:41:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [648013328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:44,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:44,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:41:44,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042834610] [2023-11-29 00:41:44,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:44,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:41:44,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:44,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:41:44,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:41:44,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:41:44,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 76 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:44,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:44,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:41:44,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:44,725 INFO L124 PetriNetUnfolderBase]: 183/470 cut-off events. [2023-11-29 00:41:44,725 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-11-29 00:41:44,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 470 events. 183/470 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2554 event pairs, 100 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 691. Up to 275 conditions per place. [2023-11-29 00:41:44,733 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 28 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-29 00:41:44,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 72 transitions, 216 flow [2023-11-29 00:41:44,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:41:44,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:41:44,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 168 transitions. [2023-11-29 00:41:44,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088607594936709 [2023-11-29 00:41:44,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 168 transitions. [2023-11-29 00:41:44,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 168 transitions. [2023-11-29 00:41:44,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:41:44,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 168 transitions. [2023-11-29 00:41:44,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:44,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:44,754 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:44,756 INFO L175 Difference]: Start difference. First operand has 75 places, 76 transitions, 164 flow. Second operand 3 states and 168 transitions. [2023-11-29 00:41:44,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 72 transitions, 216 flow [2023-11-29 00:41:44,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:41:44,762 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 152 flow [2023-11-29 00:41:44,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-11-29 00:41:44,767 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-29 00:41:44,767 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 152 flow [2023-11-29 00:41:44,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:44,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:44,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-29 00:41:44,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 00:41:44,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:44,969 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:41:44,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:44,969 INFO L85 PathProgramCache]: Analyzing trace with hash 553918, now seen corresponding path program 1 times [2023-11-29 00:41:44,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:44,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642808960] [2023-11-29 00:41:44,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:44,972 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 [2023-11-29 00:41:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:44,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:41:44,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:45,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 00:41:45,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:45,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 00:41:45,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:45,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:45,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:45,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:45,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:45,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:41:45,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:45,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:45,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:45,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:41:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:45,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:45,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:45,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642808960] [2023-11-29 00:41:45,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642808960] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:45,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:45,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:41:45,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052457059] [2023-11-29 00:41:45,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:45,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:41:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:41:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:41:45,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:41:45,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:45,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:45,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:41:45,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:45,541 INFO L124 PetriNetUnfolderBase]: 185/476 cut-off events. [2023-11-29 00:41:45,541 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-29 00:41:45,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 476 events. 185/476 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2581 event pairs, 100 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 741. Up to 284 conditions per place. [2023-11-29 00:41:45,548 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 33 selfloop transitions, 5 changer transitions 0/78 dead transitions. [2023-11-29 00:41:45,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 242 flow [2023-11-29 00:41:45,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:41:45,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:41:45,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 175 transitions. [2023-11-29 00:41:45,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7383966244725738 [2023-11-29 00:41:45,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 175 transitions. [2023-11-29 00:41:45,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 175 transitions. [2023-11-29 00:41:45,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:41:45,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 175 transitions. [2023-11-29 00:41:45,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 58.333333333333336) internal successors, (175), 3 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:45,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:45,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:45,555 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 152 flow. Second operand 3 states and 175 transitions. [2023-11-29 00:41:45,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 242 flow [2023-11-29 00:41:45,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 78 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:41:45,558 INFO L231 Difference]: Finished difference. Result has 71 places, 76 transitions, 188 flow [2023-11-29 00:41:45,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=71, PETRI_TRANSITIONS=76} [2023-11-29 00:41:45,559 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-29 00:41:45,560 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 76 transitions, 188 flow [2023-11-29 00:41:45,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:45,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:45,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-29 00:41:45,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:45,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:45,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:41:45,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:45,761 INFO L85 PathProgramCache]: Analyzing trace with hash 17172704, now seen corresponding path program 1 times [2023-11-29 00:41:45,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:45,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566363528] [2023-11-29 00:41:45,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:45,762 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 [2023-11-29 00:41:45,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:45,763 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:41:45,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:45,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:41:45,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:45,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:45,839 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:41:45,839 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:45,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566363528] [2023-11-29 00:41:45,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566363528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:41:45,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:41:45,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:41:45,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724929366] [2023-11-29 00:41:45,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:41:45,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:41:45,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:45,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:41:45,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:41:45,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-29 00:41:45,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 76 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:45,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:45,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-29 00:41:45,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:46,030 INFO L124 PetriNetUnfolderBase]: 183/474 cut-off events. [2023-11-29 00:41:46,030 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:41:46,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 474 events. 183/474 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2562 event pairs, 100 based on Foata normal form. 2/331 useless extension candidates. Maximal degree in co-relation 751. Up to 281 conditions per place. [2023-11-29 00:41:46,036 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 30 selfloop transitions, 4 changer transitions 0/76 dead transitions. [2023-11-29 00:41:46,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 76 transitions, 250 flow [2023-11-29 00:41:46,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:41:46,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:41:46,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2023-11-29 00:41:46,039 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7468354430379747 [2023-11-29 00:41:46,039 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2023-11-29 00:41:46,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2023-11-29 00:41:46,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:41:46,040 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2023-11-29 00:41:46,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:46,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:46,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:46,043 INFO L175 Difference]: Start difference. First operand has 71 places, 76 transitions, 188 flow. Second operand 3 states and 177 transitions. [2023-11-29 00:41:46,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 76 transitions, 250 flow [2023-11-29 00:41:46,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 76 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:41:46,047 INFO L231 Difference]: Finished difference. Result has 71 places, 74 transitions, 178 flow [2023-11-29 00:41:46,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=71, PETRI_TRANSITIONS=74} [2023-11-29 00:41:46,048 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-29 00:41:46,048 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 74 transitions, 178 flow [2023-11-29 00:41:46,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:46,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:46,048 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-29 00:41:46,050 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 00:41:46,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:46,249 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:41:46,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:46,250 INFO L85 PathProgramCache]: Analyzing trace with hash 532332878, now seen corresponding path program 1 times [2023-11-29 00:41:46,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:46,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [883157397] [2023-11-29 00:41:46,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:46,251 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 [2023-11-29 00:41:46,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:46,252 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:41:46,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:46,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:41:46,311 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:46,332 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:41:46,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:46,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:41:46,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:46,349 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:41:46,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:46,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:46,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:46,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:46,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:46,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:41:46,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:46,437 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:46,579 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:46,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [883157397] [2023-11-29 00:41:46,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [883157397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:46,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:41:46,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-29 00:41:46,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995074587] [2023-11-29 00:41:46,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:46,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:41:46,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:46,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:41:46,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:41:47,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:41:47,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 74 transitions, 178 flow. Second operand has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:47,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:47,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:41:47,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:48,762 INFO L124 PetriNetUnfolderBase]: 189/492 cut-off events. [2023-11-29 00:41:48,763 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:41:48,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 492 events. 189/492 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2631 event pairs, 100 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 776. Up to 286 conditions per place. [2023-11-29 00:41:48,768 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 38 selfloop transitions, 16 changer transitions 0/94 dead transitions. [2023-11-29 00:41:48,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 94 transitions, 356 flow [2023-11-29 00:41:48,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:41:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:41:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 330 transitions. [2023-11-29 00:41:48,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6962025316455697 [2023-11-29 00:41:48,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 330 transitions. [2023-11-29 00:41:48,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 330 transitions. [2023-11-29 00:41:48,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:41:48,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 330 transitions. [2023-11-29 00:41:48,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.0) internal successors, (330), 6 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:48,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:48,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:48,777 INFO L175 Difference]: Start difference. First operand has 71 places, 74 transitions, 178 flow. Second operand 6 states and 330 transitions. [2023-11-29 00:41:48,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 94 transitions, 356 flow [2023-11-29 00:41:48,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 94 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:41:48,781 INFO L231 Difference]: Finished difference. Result has 77 places, 86 transitions, 286 flow [2023-11-29 00:41:48,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=286, PETRI_PLACES=77, PETRI_TRANSITIONS=86} [2023-11-29 00:41:48,782 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2023-11-29 00:41:48,782 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 86 transitions, 286 flow [2023-11-29 00:41:48,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 46.666666666666664) internal successors, (280), 6 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:48,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:48,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:41:48,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:48,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:48,986 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:41:48,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1710709667, now seen corresponding path program 1 times [2023-11-29 00:41:48,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:48,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [77171405] [2023-11-29 00:41:48,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:41:48,987 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 [2023-11-29 00:41:48,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:48,988 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:41:48,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:41:49,056 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:41:49,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:49,087 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:41:49,087 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:49,126 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 00:41:49,126 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:49,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [77171405] [2023-11-29 00:41:49,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [77171405] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:49,127 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:41:49,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-11-29 00:41:49,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17744323] [2023-11-29 00:41:49,127 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:49,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:41:49,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:49,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:41:49,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:41:49,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-29 00:41:49,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 86 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:49,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:49,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-29 00:41:49,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:49,509 INFO L124 PetriNetUnfolderBase]: 183/486 cut-off events. [2023-11-29 00:41:49,510 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 00:41:49,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 486 events. 183/486 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2554 event pairs, 100 based on Foata normal form. 6/347 useless extension candidates. Maximal degree in co-relation 765. Up to 279 conditions per place. [2023-11-29 00:41:49,514 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 32 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2023-11-29 00:41:49,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 88 transitions, 352 flow [2023-11-29 00:41:49,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:41:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:41:49,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 332 transitions. [2023-11-29 00:41:49,516 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.70042194092827 [2023-11-29 00:41:49,516 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 332 transitions. [2023-11-29 00:41:49,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 332 transitions. [2023-11-29 00:41:49,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:41:49,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 332 transitions. [2023-11-29 00:41:49,518 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 55.333333333333336) internal successors, (332), 6 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:49,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:49,520 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:49,520 INFO L175 Difference]: Start difference. First operand has 77 places, 86 transitions, 286 flow. Second operand 6 states and 332 transitions. [2023-11-29 00:41:49,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 88 transitions, 352 flow [2023-11-29 00:41:49,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 88 transitions, 336 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 00:41:49,525 INFO L231 Difference]: Finished difference. Result has 82 places, 82 transitions, 272 flow [2023-11-29 00:41:49,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=272, PETRI_PLACES=82, PETRI_TRANSITIONS=82} [2023-11-29 00:41:49,526 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 7 predicate places. [2023-11-29 00:41:49,527 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 82 transitions, 272 flow [2023-11-29 00:41:49,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.833333333333336) internal successors, (293), 6 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:49,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:41:49,527 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-29 00:41:49,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 00:41:49,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:49,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:41:49,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:41:49,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1799803390, now seen corresponding path program 2 times [2023-11-29 00:41:49,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:41:49,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125259831] [2023-11-29 00:41:49,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:41:49,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:41:49,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:41:49,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:41:49,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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 [2023-11-29 00:41:49,807 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 00:41:49,807 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:41:49,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:41:49,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:41:49,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:41:49,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:49,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:49,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:49,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:41:49,854 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:49,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:49,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:49,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:41:49,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:41:49,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:41:50,094 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:50,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:41:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:41:50,894 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:41:50,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125259831] [2023-11-29 00:41:50,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125259831] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:41:50,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:41:50,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-29 00:41:50,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876829310] [2023-11-29 00:41:50,895 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:41:50,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 00:41:50,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:41:50,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 00:41:50,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-11-29 00:41:54,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:41:54,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 82 transitions, 272 flow. Second operand has 14 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:41:54,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:41:54,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:41:54,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:41:59,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:03,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:04,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:06,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:08,156 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:10,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:13,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:14,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 00:42:15,554 INFO L124 PetriNetUnfolderBase]: 193/520 cut-off events. [2023-11-29 00:42:15,555 INFO L125 PetriNetUnfolderBase]: For 124/124 co-relation queries the response was YES. [2023-11-29 00:42:15,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 520 events. 193/520 cut-off events. For 124/124 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2667 event pairs, 100 based on Foata normal form. 14/389 useless extension candidates. Maximal degree in co-relation 844. Up to 288 conditions per place. [2023-11-29 00:42:15,558 INFO L140 encePairwiseOnDemand]: 70/79 looper letters, 40 selfloop transitions, 42 changer transitions 0/122 dead transitions. [2023-11-29 00:42:15,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 122 transitions, 698 flow [2023-11-29 00:42:15,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 00:42:15,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-29 00:42:15,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 861 transitions. [2023-11-29 00:42:15,562 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6411020104244229 [2023-11-29 00:42:15,562 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 861 transitions. [2023-11-29 00:42:15,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 861 transitions. [2023-11-29 00:42:15,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:15,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 861 transitions. [2023-11-29 00:42:15,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 50.64705882352941) internal successors, (861), 17 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:15,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:15,568 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 79.0) internal successors, (1422), 18 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:15,568 INFO L175 Difference]: Start difference. First operand has 82 places, 82 transitions, 272 flow. Second operand 17 states and 861 transitions. [2023-11-29 00:42:15,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 122 transitions, 698 flow [2023-11-29 00:42:15,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 681 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:42:15,572 INFO L231 Difference]: Finished difference. Result has 101 places, 116 transitions, 639 flow [2023-11-29 00:42:15,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=639, PETRI_PLACES=101, PETRI_TRANSITIONS=116} [2023-11-29 00:42:15,573 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 26 predicate places. [2023-11-29 00:42:15,573 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 116 transitions, 639 flow [2023-11-29 00:42:15,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.57142857142857) internal successors, (652), 14 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:15,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:15,573 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 1, 1] [2023-11-29 00:42:15,576 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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)] Ended with exit code 0 [2023-11-29 00:42:15,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:15,774 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:15,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:15,774 INFO L85 PathProgramCache]: Analyzing trace with hash 601368414, now seen corresponding path program 3 times [2023-11-29 00:42:15,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:15,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639552785] [2023-11-29 00:42:15,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:42:15,775 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 [2023-11-29 00:42:15,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:15,776 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:15,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 00:42:16,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-29 00:42:16,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:16,045 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-29 00:42:16,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:16,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:42:16,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:16,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:16,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:16,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:16,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:16,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:16,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:16,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:42:16,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:16,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:16,468 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:16,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:18,397 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 20 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:42:18,397 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:18,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639552785] [2023-11-29 00:42:18,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639552785] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:18,398 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:18,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2023-11-29 00:42:18,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503416277] [2023-11-29 00:42:18,398 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:18,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 00:42:18,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:18,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 00:42:18,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2023-11-29 00:42:29,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:42:29,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 116 transitions, 639 flow. Second operand has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:29,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:29,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:42:29,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:30,938 INFO L124 PetriNetUnfolderBase]: 181/486 cut-off events. [2023-11-29 00:42:30,938 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-29 00:42:30,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873 conditions, 486 events. 181/486 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2550 event pairs, 100 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 858. Up to 275 conditions per place. [2023-11-29 00:42:30,943 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 33 selfloop transitions, 13 changer transitions 2/88 dead transitions. [2023-11-29 00:42:30,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 88 transitions, 410 flow [2023-11-29 00:42:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:42:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:42:30,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 410 transitions. [2023-11-29 00:42:30,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6487341772151899 [2023-11-29 00:42:30,946 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 410 transitions. [2023-11-29 00:42:30,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 410 transitions. [2023-11-29 00:42:30,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:30,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 410 transitions. [2023-11-29 00:42:30,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 51.25) internal successors, (410), 8 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:30,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:30,949 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:30,949 INFO L175 Difference]: Start difference. First operand has 101 places, 116 transitions, 639 flow. Second operand 8 states and 410 transitions. [2023-11-29 00:42:30,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 88 transitions, 410 flow [2023-11-29 00:42:30,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 354 flow, removed 6 selfloop flow, removed 12 redundant places. [2023-11-29 00:42:30,965 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 246 flow [2023-11-29 00:42:30,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=246, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2023-11-29 00:42:30,966 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2023-11-29 00:42:30,967 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 246 flow [2023-11-29 00:42:30,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 47.0) internal successors, (1034), 22 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:30,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:30,967 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1] [2023-11-29 00:42:30,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 00:42:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:31,168 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:31,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2128668463, now seen corresponding path program 2 times [2023-11-29 00:42:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:31,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831152698] [2023-11-29 00:42:31,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:42:31,169 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 [2023-11-29 00:42:31,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:31,170 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:31,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 00:42:31,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:42:31,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:42:31,249 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 00:42:31,251 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:31,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:31,303 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-29 00:42:31,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-29 00:42:31,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:31,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:31,338 INFO L378 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 17 treesize of output 11 [2023-11-29 00:42:31,527 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:42:31,528 INFO L378 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 [2023-11-29 00:42:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:31,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:31,680 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831152698] [2023-11-29 00:42:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831152698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:42:31,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448881748] [2023-11-29 00:42:31,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:31,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:42:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:31,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:42:31,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:42:31,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:42:31,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:31,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:31,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:42:31,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:32,011 INFO L124 PetriNetUnfolderBase]: 181/478 cut-off events. [2023-11-29 00:42:32,011 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 00:42:32,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 478 events. 181/478 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2482 event pairs, 100 based on Foata normal form. 37/376 useless extension candidates. Maximal degree in co-relation 828. Up to 296 conditions per place. [2023-11-29 00:42:32,015 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 39 selfloop transitions, 1 changer transitions 0/78 dead transitions. [2023-11-29 00:42:32,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 78 transitions, 322 flow [2023-11-29 00:42:32,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:42:32,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:42:32,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 167 transitions. [2023-11-29 00:42:32,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7046413502109705 [2023-11-29 00:42:32,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 167 transitions. [2023-11-29 00:42:32,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 167 transitions. [2023-11-29 00:42:32,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:32,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 167 transitions. [2023-11-29 00:42:32,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:32,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:32,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:32,019 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 246 flow. Second operand 3 states and 167 transitions. [2023-11-29 00:42:32,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 78 transitions, 322 flow [2023-11-29 00:42:32,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 78 transitions, 296 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 00:42:32,022 INFO L231 Difference]: Finished difference. Result has 78 places, 78 transitions, 218 flow [2023-11-29 00:42:32,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=78, PETRI_TRANSITIONS=78} [2023-11-29 00:42:32,023 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-11-29 00:42:32,023 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 78 transitions, 218 flow [2023-11-29 00:42:32,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:32,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:32,024 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1] [2023-11-29 00:42:32,026 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 00:42:32,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:32,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:32,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:32,227 INFO L85 PathProgramCache]: Analyzing trace with hash 2128668464, now seen corresponding path program 1 times [2023-11-29 00:42:32,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:32,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823574353] [2023-11-29 00:42:32,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:32,228 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 [2023-11-29 00:42:32,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:32,229 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:32,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 00:42:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:32,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:42:32,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:32,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:32,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:42:32,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:32,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-29 00:42:32,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:32,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:32,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 00:42:32,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-11-29 00:42:32,679 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 00:42:32,680 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 00:42:33,007 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:33,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:33,008 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:33,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823574353] [2023-11-29 00:42:33,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823574353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:33,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:33,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:33,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088667630] [2023-11-29 00:42:33,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:33,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:33,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:33,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:33,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:33,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:42:33,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 78 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:33,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:42:33,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:33,640 INFO L124 PetriNetUnfolderBase]: 181/472 cut-off events. [2023-11-29 00:42:33,640 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:42:33,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 472 events. 181/472 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2427 event pairs, 100 based on Foata normal form. 37/376 useless extension candidates. Maximal degree in co-relation 810. Up to 285 conditions per place. [2023-11-29 00:42:33,644 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 38 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-11-29 00:42:33,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 76 transitions, 294 flow [2023-11-29 00:42:33,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:33,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:33,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2023-11-29 00:42:33,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:42:33,646 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2023-11-29 00:42:33,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2023-11-29 00:42:33,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:33,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2023-11-29 00:42:33,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,648 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,648 INFO L175 Difference]: Start difference. First operand has 78 places, 78 transitions, 218 flow. Second operand 4 states and 212 transitions. [2023-11-29 00:42:33,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 76 transitions, 294 flow [2023-11-29 00:42:33,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 76 transitions, 293 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:42:33,650 INFO L231 Difference]: Finished difference. Result has 78 places, 76 transitions, 217 flow [2023-11-29 00:42:33,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=217, PETRI_PLACES=78, PETRI_TRANSITIONS=76} [2023-11-29 00:42:33,650 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2023-11-29 00:42:33,651 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 76 transitions, 217 flow [2023-11-29 00:42:33,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:33,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:33,651 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:33,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:33,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:33,852 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:33,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash -29365112, now seen corresponding path program 1 times [2023-11-29 00:42:33,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:33,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680758249] [2023-11-29 00:42:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:33,852 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 [2023-11-29 00:42:33,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:33,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:33,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 00:42:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:34,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 00:42:34,068 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:34,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:34,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:42:34,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:34,092 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:34,094 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:34,104 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:34,110 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:34,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:42:34,175 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-11-29 00:42:34,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2023-11-29 00:42:34,415 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:34,415 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:34,415 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:34,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680758249] [2023-11-29 00:42:34,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [680758249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:34,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:34,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:34,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731238213] [2023-11-29 00:42:34,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:34,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:34,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:34,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:34,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:34,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:42:34,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 76 transitions, 217 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:34,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:34,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:42:34,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:34,806 INFO L124 PetriNetUnfolderBase]: 181/468 cut-off events. [2023-11-29 00:42:34,806 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:42:34,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 816 conditions, 468 events. 181/468 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2379 event pairs, 100 based on Foata normal form. 11/350 useless extension candidates. Maximal degree in co-relation 808. Up to 285 conditions per place. [2023-11-29 00:42:34,811 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 38 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-29 00:42:34,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 74 transitions, 293 flow [2023-11-29 00:42:34,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:34,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2023-11-29 00:42:34,812 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:42:34,812 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 212 transitions. [2023-11-29 00:42:34,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 212 transitions. [2023-11-29 00:42:34,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:34,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 212 transitions. [2023-11-29 00:42:34,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:34,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:34,815 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:34,815 INFO L175 Difference]: Start difference. First operand has 78 places, 76 transitions, 217 flow. Second operand 4 states and 212 transitions. [2023-11-29 00:42:34,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 74 transitions, 293 flow [2023-11-29 00:42:34,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 74 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:42:34,817 INFO L231 Difference]: Finished difference. Result has 77 places, 74 transitions, 214 flow [2023-11-29 00:42:34,817 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=77, PETRI_TRANSITIONS=74} [2023-11-29 00:42:34,818 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 2 predicate places. [2023-11-29 00:42:34,818 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 74 transitions, 214 flow [2023-11-29 00:42:34,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:34,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:34,818 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:34,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2023-11-29 00:42:35,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:35,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:35,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:35,020 INFO L85 PathProgramCache]: Analyzing trace with hash -29365113, now seen corresponding path program 1 times [2023-11-29 00:42:35,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:35,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1014266816] [2023-11-29 00:42:35,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:35,020 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 [2023-11-29 00:42:35,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:35,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:35,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 00:42:35,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:42:35,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:35,227 INFO L349 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-29 00:42:35,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-29 00:42:35,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:35,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:35,252 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 00:42:35,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-29 00:42:35,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:35,260 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-29 00:42:35,260 INFO L378 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 1 case distinctions, treesize of input 21 treesize of output 1 [2023-11-29 00:42:35,297 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 00:42:35,297 INFO L378 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 [2023-11-29 00:42:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:35,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:35,325 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:35,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1014266816] [2023-11-29 00:42:35,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1014266816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:35,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:35,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 00:42:35,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540367592] [2023-11-29 00:42:35,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:35,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:42:35,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:35,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:42:35,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:42:35,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:42:35,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 74 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:35,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:35,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:42:35,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:35,527 INFO L124 PetriNetUnfolderBase]: 197/501 cut-off events. [2023-11-29 00:42:35,527 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-11-29 00:42:35,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 878 conditions, 501 events. 197/501 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2547 event pairs, 110 based on Foata normal form. 0/365 useless extension candidates. Maximal degree in co-relation 870. Up to 324 conditions per place. [2023-11-29 00:42:35,531 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 41 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-11-29 00:42:35,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 72 transitions, 294 flow [2023-11-29 00:42:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:42:35,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:42:35,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2023-11-29 00:42:35,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6877637130801688 [2023-11-29 00:42:35,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 163 transitions. [2023-11-29 00:42:35,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 163 transitions. [2023-11-29 00:42:35,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:35,532 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 163 transitions. [2023-11-29 00:42:35,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:35,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:35,534 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:35,534 INFO L175 Difference]: Start difference. First operand has 77 places, 74 transitions, 214 flow. Second operand 3 states and 163 transitions. [2023-11-29 00:42:35,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 72 transitions, 294 flow [2023-11-29 00:42:35,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 72 transitions, 291 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:42:35,536 INFO L231 Difference]: Finished difference. Result has 75 places, 72 transitions, 209 flow [2023-11-29 00:42:35,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=209, PETRI_PLACES=75, PETRI_TRANSITIONS=72} [2023-11-29 00:42:35,536 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-29 00:42:35,536 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 72 transitions, 209 flow [2023-11-29 00:42:35,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:35,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:35,537 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:35,542 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 00:42:35,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:35,737 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:35,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash -910273657, now seen corresponding path program 1 times [2023-11-29 00:42:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2051808065] [2023-11-29 00:42:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:35,738 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 [2023-11-29 00:42:35,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:35,739 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:35,740 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-29 00:42:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:35,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:42:35,944 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:35,954 INFO L378 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 [2023-11-29 00:42:35,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:35,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:35,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:35,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:35,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:35,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:35,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:42:36,005 INFO L378 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 [2023-11-29 00:42:36,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:36,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:36,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:36,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:36,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:36,134 INFO L378 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 9 [2023-11-29 00:42:36,146 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:42:36,146 INFO L378 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 [2023-11-29 00:42:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:36,233 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:36,233 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:36,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2051808065] [2023-11-29 00:42:36,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2051808065] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:36,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:36,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:42:36,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763743672] [2023-11-29 00:42:36,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:36,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:42:36,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:36,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:42:36,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:42:36,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:42:36,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 72 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:36,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:36,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:42:36,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:36,884 INFO L124 PetriNetUnfolderBase]: 385/938 cut-off events. [2023-11-29 00:42:36,884 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 00:42:36,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1604 conditions, 938 events. 385/938 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5638 event pairs, 136 based on Foata normal form. 28/728 useless extension candidates. Maximal degree in co-relation 1596. Up to 350 conditions per place. [2023-11-29 00:42:36,890 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 58 selfloop transitions, 5 changer transitions 0/93 dead transitions. [2023-11-29 00:42:36,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 93 transitions, 380 flow [2023-11-29 00:42:36,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:42:36,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:42:36,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 313 transitions. [2023-11-29 00:42:36,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6603375527426161 [2023-11-29 00:42:36,892 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 313 transitions. [2023-11-29 00:42:36,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 313 transitions. [2023-11-29 00:42:36,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:36,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 313 transitions. [2023-11-29 00:42:36,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.166666666666664) internal successors, (313), 6 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:36,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:36,895 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:36,895 INFO L175 Difference]: Start difference. First operand has 75 places, 72 transitions, 209 flow. Second operand 6 states and 313 transitions. [2023-11-29 00:42:36,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 93 transitions, 380 flow [2023-11-29 00:42:36,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 93 transitions, 379 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:42:36,897 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 228 flow [2023-11-29 00:42:36,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=228, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-11-29 00:42:36,897 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-11-29 00:42:36,898 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 228 flow [2023-11-29 00:42:36,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.0) internal successors, (225), 5 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:36,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:36,898 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:36,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2023-11-29 00:42:37,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:37,099 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:37,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:37,099 INFO L85 PathProgramCache]: Analyzing trace with hash -910273658, now seen corresponding path program 1 times [2023-11-29 00:42:37,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:37,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585239553] [2023-11-29 00:42:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:37,100 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 [2023-11-29 00:42:37,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:37,101 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:37,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-29 00:42:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:37,302 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 00:42:37,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:37,308 INFO L378 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 [2023-11-29 00:42:37,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:37,315 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:37,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:37,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:37,326 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:37,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:37,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:37,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:37,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:37,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:42:37,389 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 00:42:37,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-29 00:42:37,434 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:37,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:37,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:37,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585239553] [2023-11-29 00:42:37,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585239553] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:37,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:37,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:42:37,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860670893] [2023-11-29 00:42:37,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:37,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:37,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:37,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:37,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:37,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2023-11-29 00:42:37,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:37,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:37,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2023-11-29 00:42:37,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:37,902 INFO L124 PetriNetUnfolderBase]: 488/1063 cut-off events. [2023-11-29 00:42:37,902 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-29 00:42:37,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1986 conditions, 1063 events. 488/1063 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 6119 event pairs, 312 based on Foata normal form. 0/919 useless extension candidates. Maximal degree in co-relation 1977. Up to 747 conditions per place. [2023-11-29 00:42:37,911 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 41 selfloop transitions, 3 changer transitions 0/69 dead transitions. [2023-11-29 00:42:37,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 69 transitions, 308 flow [2023-11-29 00:42:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:42:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:42:37,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2023-11-29 00:42:37,914 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5746835443037974 [2023-11-29 00:42:37,914 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 227 transitions. [2023-11-29 00:42:37,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 227 transitions. [2023-11-29 00:42:37,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:37,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 227 transitions. [2023-11-29 00:42:37,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:37,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:37,916 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:37,917 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 228 flow. Second operand 5 states and 227 transitions. [2023-11-29 00:42:37,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 69 transitions, 308 flow [2023-11-29 00:42:37,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 69 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:42:37,919 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 218 flow [2023-11-29 00:42:37,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-11-29 00:42:37,920 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2023-11-29 00:42:37,920 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 218 flow [2023-11-29 00:42:37,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:37,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:37,921 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:37,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:38,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:38,121 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:38,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:38,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1846288224, now seen corresponding path program 1 times [2023-11-29 00:42:38,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:38,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017024983] [2023-11-29 00:42:38,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:38,123 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 [2023-11-29 00:42:38,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:38,124 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:38,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-29 00:42:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:38,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 00:42:38,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:38,320 INFO L378 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 [2023-11-29 00:42:38,359 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:38,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:38,359 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:38,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017024983] [2023-11-29 00:42:38,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017024983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:38,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:38,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:42:38,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377944885] [2023-11-29 00:42:38,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:38,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:38,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:38,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:38,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:38,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 79 [2023-11-29 00:42:38,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:38,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 79 [2023-11-29 00:42:38,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:38,721 INFO L124 PetriNetUnfolderBase]: 483/998 cut-off events. [2023-11-29 00:42:38,722 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-29 00:42:38,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1908 conditions, 998 events. 483/998 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5277 event pairs, 309 based on Foata normal form. 0/943 useless extension candidates. Maximal degree in co-relation 1899. Up to 738 conditions per place. [2023-11-29 00:42:38,730 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 42 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-29 00:42:38,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 298 flow [2023-11-29 00:42:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:38,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:38,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-29 00:42:38,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981012658227848 [2023-11-29 00:42:38,732 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-29 00:42:38,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-29 00:42:38,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:38,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-29 00:42:38,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,734 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,734 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 218 flow. Second operand 4 states and 189 transitions. [2023-11-29 00:42:38,734 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 298 flow [2023-11-29 00:42:38,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 293 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:42:38,737 INFO L231 Difference]: Finished difference. Result has 72 places, 65 transitions, 209 flow [2023-11-29 00:42:38,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=72, PETRI_TRANSITIONS=65} [2023-11-29 00:42:38,738 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2023-11-29 00:42:38,738 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 65 transitions, 209 flow [2023-11-29 00:42:38,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:38,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:38,738 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:38,743 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2023-11-29 00:42:38,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:38,939 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:38,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:38,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1846288225, now seen corresponding path program 1 times [2023-11-29 00:42:38,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:38,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935287226] [2023-11-29 00:42:38,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:38,940 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 [2023-11-29 00:42:38,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:38,941 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:38,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-29 00:42:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:39,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:42:39,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:39,128 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:39,227 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:39,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:39,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935287226] [2023-11-29 00:42:39,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935287226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:39,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:39,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:42:39,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645206651] [2023-11-29 00:42:39,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:39,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:42:39,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:39,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:42:39,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:42:39,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:42:39,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:39,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:39,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:42:39,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:39,821 INFO L124 PetriNetUnfolderBase]: 385/810 cut-off events. [2023-11-29 00:42:39,821 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2023-11-29 00:42:39,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1524 conditions, 810 events. 385/810 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4162 event pairs, 136 based on Foata normal form. 14/719 useless extension candidates. Maximal degree in co-relation 1515. Up to 350 conditions per place. [2023-11-29 00:42:39,826 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 59 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-11-29 00:42:39,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 85 transitions, 378 flow [2023-11-29 00:42:39,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:42:39,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:42:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 280 transitions. [2023-11-29 00:42:39,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7088607594936709 [2023-11-29 00:42:39,828 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 280 transitions. [2023-11-29 00:42:39,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 280 transitions. [2023-11-29 00:42:39,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:39,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 280 transitions. [2023-11-29 00:42:39,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 56.0) internal successors, (280), 5 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:39,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:39,830 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:39,830 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 209 flow. Second operand 5 states and 280 transitions. [2023-11-29 00:42:39,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 85 transitions, 378 flow [2023-11-29 00:42:39,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 85 transitions, 375 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 00:42:39,832 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 220 flow [2023-11-29 00:42:39,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-11-29 00:42:39,832 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-29 00:42:39,832 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 220 flow [2023-11-29 00:42:39,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.0) internal successors, (235), 5 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:39,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:39,833 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:39,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-11-29 00:42:40,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:40,033 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:40,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:40,034 INFO L85 PathProgramCache]: Analyzing trace with hash -856938734, now seen corresponding path program 1 times [2023-11-29 00:42:40,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:40,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741032548] [2023-11-29 00:42:40,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:40,034 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:40,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:40,035 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:40,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-29 00:42:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:40,228 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 00:42:40,230 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:40,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:40,329 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:40,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:40,330 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:40,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741032548] [2023-11-29 00:42:40,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741032548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:40,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:40,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:42:40,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741901937] [2023-11-29 00:42:40,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:40,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:42:40,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:40,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:42:40,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:42:40,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 79 [2023-11-29 00:42:40,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:40,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:40,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 79 [2023-11-29 00:42:40,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:40,942 INFO L124 PetriNetUnfolderBase]: 686/1443 cut-off events. [2023-11-29 00:42:40,943 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2023-11-29 00:42:40,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2774 conditions, 1443 events. 686/1443 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 8171 event pairs, 255 based on Foata normal form. 46/1353 useless extension candidates. Maximal degree in co-relation 2764. Up to 642 conditions per place. [2023-11-29 00:42:40,962 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 59 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-11-29 00:42:40,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 400 flow [2023-11-29 00:42:40,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:42:40,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:42:40,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 278 transitions. [2023-11-29 00:42:40,964 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7037974683544304 [2023-11-29 00:42:40,964 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 278 transitions. [2023-11-29 00:42:40,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 278 transitions. [2023-11-29 00:42:40,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:40,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 278 transitions. [2023-11-29 00:42:40,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 55.6) internal successors, (278), 5 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:40,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:40,967 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:40,967 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 220 flow. Second operand 5 states and 278 transitions. [2023-11-29 00:42:40,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 400 flow [2023-11-29 00:42:40,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 85 transitions, 388 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:42:40,970 INFO L231 Difference]: Finished difference. Result has 76 places, 66 transitions, 230 flow [2023-11-29 00:42:40,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=230, PETRI_PLACES=76, PETRI_TRANSITIONS=66} [2023-11-29 00:42:40,971 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 1 predicate places. [2023-11-29 00:42:40,971 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 66 transitions, 230 flow [2023-11-29 00:42:40,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:40,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:40,972 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:40,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Ended with exit code 0 [2023-11-29 00:42:41,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:41,172 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:41,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:41,173 INFO L85 PathProgramCache]: Analyzing trace with hash -795296437, now seen corresponding path program 1 times [2023-11-29 00:42:41,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:41,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221460031] [2023-11-29 00:42:41,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:41,173 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 [2023-11-29 00:42:41,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:41,174 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:41,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-29 00:42:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:41,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:42:41,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:41,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:42:41,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:42:41,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:41,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:42:41,470 INFO L378 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 [2023-11-29 00:42:41,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:41,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:41,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:41,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:41,491 INFO L378 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 [2023-11-29 00:42:41,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:41,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:41,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:41,506 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:41,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:41,596 INFO L378 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 9 [2023-11-29 00:42:41,607 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:42:41,607 INFO L378 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 [2023-11-29 00:42:41,719 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:41,719 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:41,719 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221460031] [2023-11-29 00:42:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221460031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:41,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:42:41,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369411953] [2023-11-29 00:42:41,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:41,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:42:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:42:41,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:42:42,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:42:42,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 66 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:42,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:42,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:42:42,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:42,451 INFO L124 PetriNetUnfolderBase]: 686/1399 cut-off events. [2023-11-29 00:42:42,451 INFO L125 PetriNetUnfolderBase]: For 209/209 co-relation queries the response was YES. [2023-11-29 00:42:42,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2795 conditions, 1399 events. 686/1399 cut-off events. For 209/209 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 7636 event pairs, 255 based on Foata normal form. 22/1349 useless extension candidates. Maximal degree in co-relation 2784. Up to 642 conditions per place. [2023-11-29 00:42:42,462 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 58 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-11-29 00:42:42,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 85 transitions, 404 flow [2023-11-29 00:42:42,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 00:42:42,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 00:42:42,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 311 transitions. [2023-11-29 00:42:42,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6561181434599156 [2023-11-29 00:42:42,464 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 311 transitions. [2023-11-29 00:42:42,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 311 transitions. [2023-11-29 00:42:42,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:42,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 311 transitions. [2023-11-29 00:42:42,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:42,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:42,467 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:42,467 INFO L175 Difference]: Start difference. First operand has 76 places, 66 transitions, 230 flow. Second operand 6 states and 311 transitions. [2023-11-29 00:42:42,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 85 transitions, 404 flow [2023-11-29 00:42:42,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 85 transitions, 398 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:42:42,471 INFO L231 Difference]: Finished difference. Result has 79 places, 66 transitions, 240 flow [2023-11-29 00:42:42,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=240, PETRI_PLACES=79, PETRI_TRANSITIONS=66} [2023-11-29 00:42:42,471 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2023-11-29 00:42:42,471 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 66 transitions, 240 flow [2023-11-29 00:42:42,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:42,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:42,472 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:42,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:42,672 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:42,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 587563665, now seen corresponding path program 1 times [2023-11-29 00:42:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [681336633] [2023-11-29 00:42:42,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:42,673 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 [2023-11-29 00:42:42,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:42,674 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:42,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-29 00:42:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:42,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:42,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:42,876 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:42,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:42,876 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:42,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [681336633] [2023-11-29 00:42:42,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [681336633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:42,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:42,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:42:42,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735798583] [2023-11-29 00:42:42,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:42,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:42,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:42,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:42,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:42,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-29 00:42:42,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 66 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:42,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:42,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-29 00:42:42,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:43,240 INFO L124 PetriNetUnfolderBase]: 926/1934 cut-off events. [2023-11-29 00:42:43,240 INFO L125 PetriNetUnfolderBase]: For 483/485 co-relation queries the response was YES. [2023-11-29 00:42:43,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 1934 events. 926/1934 cut-off events. For 483/485 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 11770 event pairs, 360 based on Foata normal form. 48/1933 useless extension candidates. Maximal degree in co-relation 3962. Up to 870 conditions per place. [2023-11-29 00:42:43,252 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 70 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-29 00:42:43,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 472 flow [2023-11-29 00:42:43,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:43,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:43,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 247 transitions. [2023-11-29 00:42:43,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7816455696202531 [2023-11-29 00:42:43,254 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 247 transitions. [2023-11-29 00:42:43,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 247 transitions. [2023-11-29 00:42:43,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:43,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 247 transitions. [2023-11-29 00:42:43,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.75) internal successors, (247), 4 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:43,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:43,256 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:43,256 INFO L175 Difference]: Start difference. First operand has 79 places, 66 transitions, 240 flow. Second operand 4 states and 247 transitions. [2023-11-29 00:42:43,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 472 flow [2023-11-29 00:42:43,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 96 transitions, 454 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-29 00:42:43,259 INFO L231 Difference]: Finished difference. Result has 79 places, 67 transitions, 245 flow [2023-11-29 00:42:43,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=79, PETRI_TRANSITIONS=67} [2023-11-29 00:42:43,259 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 4 predicate places. [2023-11-29 00:42:43,259 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 67 transitions, 245 flow [2023-11-29 00:42:43,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:43,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:43,260 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:43,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2023-11-29 00:42:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:43,460 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:43,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1034100534, now seen corresponding path program 1 times [2023-11-29 00:42:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625360036] [2023-11-29 00:42:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:43,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:43,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:43,462 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:43,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-29 00:42:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:43,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:42:43,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:43,746 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:42:43,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:42:43,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:43,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:43,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:43,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:43,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:43,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:43,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:43,794 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:42:43,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:43,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:42:43,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:43,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:42:43,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:42:43,918 INFO L378 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 9 [2023-11-29 00:42:43,927 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:42:43,928 INFO L378 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 [2023-11-29 00:42:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:44,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:44,697 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:44,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:44,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625360036] [2023-11-29 00:42:44,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625360036] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:44,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:44,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 00:42:44,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897120503] [2023-11-29 00:42:44,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:44,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:42:44,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:44,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:42:44,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:42:51,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:42:51,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 79 [2023-11-29 00:42:51,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 67 transitions, 245 flow. Second operand has 10 states, 10 states have (on average 43.2) internal successors, (432), 10 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:51,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:51,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 79 [2023-11-29 00:42:51,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:52,951 INFO L124 PetriNetUnfolderBase]: 2339/4602 cut-off events. [2023-11-29 00:42:52,951 INFO L125 PetriNetUnfolderBase]: For 1221/1221 co-relation queries the response was YES. [2023-11-29 00:42:52,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9720 conditions, 4602 events. 2339/4602 cut-off events. For 1221/1221 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 28458 event pairs, 477 based on Foata normal form. 144/4688 useless extension candidates. Maximal degree in co-relation 9706. Up to 845 conditions per place. [2023-11-29 00:42:52,977 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 130 selfloop transitions, 9 changer transitions 0/158 dead transitions. [2023-11-29 00:42:52,977 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 158 transitions, 782 flow [2023-11-29 00:42:52,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:42:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:42:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 486 transitions. [2023-11-29 00:42:52,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6835443037974683 [2023-11-29 00:42:52,979 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 486 transitions. [2023-11-29 00:42:52,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 486 transitions. [2023-11-29 00:42:52,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:52,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 486 transitions. [2023-11-29 00:42:52,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 54.0) internal successors, (486), 9 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,982 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,982 INFO L175 Difference]: Start difference. First operand has 79 places, 67 transitions, 245 flow. Second operand 9 states and 486 transitions. [2023-11-29 00:42:52,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 158 transitions, 782 flow [2023-11-29 00:42:52,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 158 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:42:52,988 INFO L231 Difference]: Finished difference. Result has 89 places, 69 transitions, 291 flow [2023-11-29 00:42:52,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=291, PETRI_PLACES=89, PETRI_TRANSITIONS=69} [2023-11-29 00:42:52,989 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 14 predicate places. [2023-11-29 00:42:52,989 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 69 transitions, 291 flow [2023-11-29 00:42:52,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 43.2) internal successors, (432), 10 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:52,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:52,989 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:52,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-29 00:42:53,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:53,190 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:53,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:53,190 INFO L85 PathProgramCache]: Analyzing trace with hash -246229635, now seen corresponding path program 1 times [2023-11-29 00:42:53,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:53,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [706150453] [2023-11-29 00:42:53,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:53,190 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:53,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:53,191 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:53,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-29 00:42:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:53,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:42:53,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:53,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:42:53,410 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:53,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [706150453] [2023-11-29 00:42:53,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [706150453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:42:53,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:42:53,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:42:53,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470419143] [2023-11-29 00:42:53,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:42:53,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:42:53,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:53,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:42:53,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:42:53,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-29 00:42:53,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 69 transitions, 291 flow. Second operand has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:53,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:53,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-29 00:42:53,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:54,324 INFO L124 PetriNetUnfolderBase]: 2854/5825 cut-off events. [2023-11-29 00:42:54,324 INFO L125 PetriNetUnfolderBase]: For 2743/2743 co-relation queries the response was YES. [2023-11-29 00:42:54,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12872 conditions, 5825 events. 2854/5825 cut-off events. For 2743/2743 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 41650 event pairs, 1387 based on Foata normal form. 178/5939 useless extension candidates. Maximal degree in co-relation 12854. Up to 2869 conditions per place. [2023-11-29 00:42:54,353 INFO L140 encePairwiseOnDemand]: 76/79 looper letters, 76 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2023-11-29 00:42:54,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 102 transitions, 608 flow [2023-11-29 00:42:54,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:42:54,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:42:54,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2023-11-29 00:42:54,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7721518987341772 [2023-11-29 00:42:54,355 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 244 transitions. [2023-11-29 00:42:54,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 244 transitions. [2023-11-29 00:42:54,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:54,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 244 transitions. [2023-11-29 00:42:54,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:54,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:54,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:54,357 INFO L175 Difference]: Start difference. First operand has 89 places, 69 transitions, 291 flow. Second operand 4 states and 244 transitions. [2023-11-29 00:42:54,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 102 transitions, 608 flow [2023-11-29 00:42:54,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 102 transitions, 579 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-29 00:42:54,363 INFO L231 Difference]: Finished difference. Result has 90 places, 70 transitions, 293 flow [2023-11-29 00:42:54,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=293, PETRI_PLACES=90, PETRI_TRANSITIONS=70} [2023-11-29 00:42:54,363 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2023-11-29 00:42:54,363 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 70 transitions, 293 flow [2023-11-29 00:42:54,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.5) internal successors, (202), 4 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:54,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:54,364 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:54,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Ended with exit code 0 [2023-11-29 00:42:54,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:54,564 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:54,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:54,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1992346002, now seen corresponding path program 1 times [2023-11-29 00:42:54,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922064443] [2023-11-29 00:42:54,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:54,565 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 [2023-11-29 00:42:54,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:54,566 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:54,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-29 00:42:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:54,766 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:42:54,767 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:54,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:54,949 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:54,949 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:55,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:55,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922064443] [2023-11-29 00:42:55,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922064443] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:55,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:42:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973216682] [2023-11-29 00:42:55,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:42:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:42:55,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:42:57,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 79 [2023-11-29 00:42:57,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 70 transitions, 293 flow. Second operand has 10 states, 10 states have (on average 46.5) internal successors, (465), 10 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:57,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:42:57,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 79 [2023-11-29 00:42:57,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:42:58,767 INFO L124 PetriNetUnfolderBase]: 3185/6363 cut-off events. [2023-11-29 00:42:58,767 INFO L125 PetriNetUnfolderBase]: For 3241/3241 co-relation queries the response was YES. [2023-11-29 00:42:58,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14577 conditions, 6363 events. 3185/6363 cut-off events. For 3241/3241 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 44377 event pairs, 264 based on Foata normal form. 240/6557 useless extension candidates. Maximal degree in co-relation 14557. Up to 1206 conditions per place. [2023-11-29 00:42:58,801 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 131 selfloop transitions, 8 changer transitions 0/160 dead transitions. [2023-11-29 00:42:58,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 160 transitions, 869 flow [2023-11-29 00:42:58,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:42:58,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:42:58,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 473 transitions. [2023-11-29 00:42:58,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7484177215189873 [2023-11-29 00:42:58,803 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 473 transitions. [2023-11-29 00:42:58,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 473 transitions. [2023-11-29 00:42:58,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:42:58,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 473 transitions. [2023-11-29 00:42:58,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 59.125) internal successors, (473), 8 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:58,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:58,806 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:58,806 INFO L175 Difference]: Start difference. First operand has 90 places, 70 transitions, 293 flow. Second operand 8 states and 473 transitions. [2023-11-29 00:42:58,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 160 transitions, 869 flow [2023-11-29 00:42:58,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 160 transitions, 864 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:42:58,820 INFO L231 Difference]: Finished difference. Result has 99 places, 70 transitions, 325 flow [2023-11-29 00:42:58,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2023-11-29 00:42:58,820 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-11-29 00:42:58,821 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 325 flow [2023-11-29 00:42:58,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 46.5) internal successors, (465), 10 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:42:58,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:42:58,821 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:42:58,825 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2023-11-29 00:42:59,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:42:59,022 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:42:59,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:42:59,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1378265598, now seen corresponding path program 1 times [2023-11-29 00:42:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:42:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703359365] [2023-11-29 00:42:59,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:42:59,022 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 [2023-11-29 00:42:59,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:42:59,023 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:42:59,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-29 00:42:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:42:59,253 INFO L262 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-29 00:42:59,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:42:59,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 00:42:59,407 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:59,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:42:59,840 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:42:59,840 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:42:59,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703359365] [2023-11-29 00:42:59,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703359365] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:42:59,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:42:59,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-29 00:42:59,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736069318] [2023-11-29 00:42:59,841 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:42:59,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:42:59,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:42:59,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:42:59,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:43:02,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:43:02,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 325 flow. Second operand has 10 states, 10 states have (on average 46.1) internal successors, (461), 10 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:02,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:02,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:43:02,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:04,352 INFO L124 PetriNetUnfolderBase]: 7066/13606 cut-off events. [2023-11-29 00:43:04,352 INFO L125 PetriNetUnfolderBase]: For 10864/10864 co-relation queries the response was YES. [2023-11-29 00:43:04,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32481 conditions, 13606 events. 7066/13606 cut-off events. For 10864/10864 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 101273 event pairs, 625 based on Foata normal form. 534/14084 useless extension candidates. Maximal degree in co-relation 32457. Up to 2678 conditions per place. [2023-11-29 00:43:04,430 INFO L140 encePairwiseOnDemand]: 72/79 looper letters, 137 selfloop transitions, 8 changer transitions 0/165 dead transitions. [2023-11-29 00:43:04,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 165 transitions, 1067 flow [2023-11-29 00:43:04,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:43:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:43:04,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 461 transitions. [2023-11-29 00:43:04,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7294303797468354 [2023-11-29 00:43:04,432 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 461 transitions. [2023-11-29 00:43:04,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 461 transitions. [2023-11-29 00:43:04,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:04,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 461 transitions. [2023-11-29 00:43:04,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 57.625) internal successors, (461), 8 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,434 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 79.0) internal successors, (711), 9 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,434 INFO L175 Difference]: Start difference. First operand has 99 places, 70 transitions, 325 flow. Second operand 8 states and 461 transitions. [2023-11-29 00:43:04,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 165 transitions, 1067 flow [2023-11-29 00:43:04,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 165 transitions, 1023 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 00:43:04,449 INFO L231 Difference]: Finished difference. Result has 103 places, 72 transitions, 358 flow [2023-11-29 00:43:04,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=358, PETRI_PLACES=103, PETRI_TRANSITIONS=72} [2023-11-29 00:43:04,450 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 28 predicate places. [2023-11-29 00:43:04,450 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 72 transitions, 358 flow [2023-11-29 00:43:04,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 46.1) internal successors, (461), 10 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:04,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:04,451 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:04,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2023-11-29 00:43:04,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:04,651 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:04,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash 223439963, now seen corresponding path program 1 times [2023-11-29 00:43:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:04,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756126100] [2023-11-29 00:43:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:04,652 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 [2023-11-29 00:43:04,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:04,653 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:04,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-29 00:43:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:05,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:43:05,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:05,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-29 00:43:05,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 00:43:05,031 INFO L378 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 [2023-11-29 00:43:05,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:05,038 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:43:05,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:05,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:43:05,052 INFO L378 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 [2023-11-29 00:43:05,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:05,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 00:43:05,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:05,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 00:43:05,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:05,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 00:43:05,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 00:43:05,182 INFO L378 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 9 [2023-11-29 00:43:05,193 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 00:43:05,193 INFO L378 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 [2023-11-29 00:43:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:05,391 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 00:43:06,038 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:06,038 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:06,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756126100] [2023-11-29 00:43:06,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756126100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 00:43:06,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 00:43:06,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-29 00:43:06,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150206825] [2023-11-29 00:43:06,039 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 00:43:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 00:43:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 00:43:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-29 00:43:10,546 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-29 00:43:13,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 79 [2023-11-29 00:43:13,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 72 transitions, 358 flow. Second operand has 10 states, 10 states have (on average 44.2) internal successors, (442), 10 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:13,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:13,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 79 [2023-11-29 00:43:13,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:16,255 INFO L124 PetriNetUnfolderBase]: 6526/12553 cut-off events. [2023-11-29 00:43:16,255 INFO L125 PetriNetUnfolderBase]: For 10032/10032 co-relation queries the response was YES. [2023-11-29 00:43:16,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30500 conditions, 12553 events. 6526/12553 cut-off events. For 10032/10032 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 92083 event pairs, 625 based on Foata normal form. 534/13011 useless extension candidates. Maximal degree in co-relation 30472. Up to 2454 conditions per place. [2023-11-29 00:43:16,329 INFO L140 encePairwiseOnDemand]: 71/79 looper letters, 132 selfloop transitions, 9 changer transitions 0/162 dead transitions. [2023-11-29 00:43:16,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 162 transitions, 1042 flow [2023-11-29 00:43:16,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-29 00:43:16,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-29 00:43:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 482 transitions. [2023-11-29 00:43:16,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6779184247538678 [2023-11-29 00:43:16,332 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 482 transitions. [2023-11-29 00:43:16,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 482 transitions. [2023-11-29 00:43:16,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:16,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 482 transitions. [2023-11-29 00:43:16,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 53.55555555555556) internal successors, (482), 9 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,335 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 79.0) internal successors, (790), 10 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,335 INFO L175 Difference]: Start difference. First operand has 103 places, 72 transitions, 358 flow. Second operand 9 states and 482 transitions. [2023-11-29 00:43:16,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 162 transitions, 1042 flow [2023-11-29 00:43:16,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 162 transitions, 1031 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-29 00:43:16,358 INFO L231 Difference]: Finished difference. Result has 111 places, 72 transitions, 382 flow [2023-11-29 00:43:16,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=382, PETRI_PLACES=111, PETRI_TRANSITIONS=72} [2023-11-29 00:43:16,359 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 36 predicate places. [2023-11-29 00:43:16,359 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 72 transitions, 382 flow [2023-11-29 00:43:16,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 44.2) internal successors, (442), 10 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:16,360 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:16,365 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2023-11-29 00:43:16,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:16,560 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:16,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:16,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2020086666, now seen corresponding path program 1 times [2023-11-29 00:43:16,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:16,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632483453] [2023-11-29 00:43:16,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:16,562 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 [2023-11-29 00:43:16,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:16,563 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:16,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-29 00:43:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:16,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:16,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:16,818 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:16,818 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:16,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632483453] [2023-11-29 00:43:16,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632483453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:16,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:16,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506109077] [2023-11-29 00:43:16,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:16,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:16,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:16,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2023-11-29 00:43:16,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 72 transitions, 382 flow. Second operand has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:16,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:16,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2023-11-29 00:43:16,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:18,810 INFO L124 PetriNetUnfolderBase]: 6820/14033 cut-off events. [2023-11-29 00:43:18,810 INFO L125 PetriNetUnfolderBase]: For 14773/14773 co-relation queries the response was YES. [2023-11-29 00:43:18,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35081 conditions, 14033 events. 6820/14033 cut-off events. For 14773/14773 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 111285 event pairs, 5467 based on Foata normal form. 5/13464 useless extension candidates. Maximal degree in co-relation 35049. Up to 8290 conditions per place. [2023-11-29 00:43:18,897 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 86 selfloop transitions, 5 changer transitions 2/116 dead transitions. [2023-11-29 00:43:18,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 116 transitions, 774 flow [2023-11-29 00:43:18,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:18,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 298 transitions. [2023-11-29 00:43:18,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7544303797468355 [2023-11-29 00:43:18,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 298 transitions. [2023-11-29 00:43:18,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 298 transitions. [2023-11-29 00:43:18,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:18,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 298 transitions. [2023-11-29 00:43:18,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 59.6) internal successors, (298), 5 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,901 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,901 INFO L175 Difference]: Start difference. First operand has 111 places, 72 transitions, 382 flow. Second operand 5 states and 298 transitions. [2023-11-29 00:43:18,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 116 transitions, 774 flow [2023-11-29 00:43:18,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 116 transitions, 745 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-29 00:43:18,938 INFO L231 Difference]: Finished difference. Result has 110 places, 73 transitions, 388 flow [2023-11-29 00:43:18,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=110, PETRI_TRANSITIONS=73} [2023-11-29 00:43:18,939 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 35 predicate places. [2023-11-29 00:43:18,939 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 73 transitions, 388 flow [2023-11-29 00:43:18,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.0) internal successors, (204), 4 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:18,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:18,939 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:18,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2023-11-29 00:43:19,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:19,139 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:19,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -302807200, now seen corresponding path program 2 times [2023-11-29 00:43:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:19,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [473981781] [2023-11-29 00:43:19,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:19,140 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 [2023-11-29 00:43:19,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:19,141 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:19,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-29 00:43:19,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:43:19,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:19,311 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:19,312 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:19,437 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:19,437 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:19,437 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:19,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [473981781] [2023-11-29 00:43:19,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [473981781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:19,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:19,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 00:43:19,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447219659] [2023-11-29 00:43:19,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:19,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:43:19,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:19,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:43:19,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:43:19,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 79 [2023-11-29 00:43:19,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 73 transitions, 388 flow. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:19,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:19,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 79 [2023-11-29 00:43:19,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:21,484 INFO L124 PetriNetUnfolderBase]: 7319/14886 cut-off events. [2023-11-29 00:43:21,484 INFO L125 PetriNetUnfolderBase]: For 16998/16998 co-relation queries the response was YES. [2023-11-29 00:43:21,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37587 conditions, 14886 events. 7319/14886 cut-off events. For 16998/16998 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 120944 event pairs, 3277 based on Foata normal form. 25/14639 useless extension candidates. Maximal degree in co-relation 37553. Up to 6673 conditions per place. [2023-11-29 00:43:21,573 INFO L140 encePairwiseOnDemand]: 75/79 looper letters, 75 selfloop transitions, 3 changer transitions 1/103 dead transitions. [2023-11-29 00:43:21,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 103 transitions, 719 flow [2023-11-29 00:43:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:43:21,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:43:21,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 193 transitions. [2023-11-29 00:43:21,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8143459915611815 [2023-11-29 00:43:21,574 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 193 transitions. [2023-11-29 00:43:21,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 193 transitions. [2023-11-29 00:43:21,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:21,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 193 transitions. [2023-11-29 00:43:21,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,575 INFO L175 Difference]: Start difference. First operand has 110 places, 73 transitions, 388 flow. Second operand 3 states and 193 transitions. [2023-11-29 00:43:21,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 103 transitions, 719 flow [2023-11-29 00:43:21,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 707 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:43:21,595 INFO L231 Difference]: Finished difference. Result has 110 places, 75 transitions, 399 flow [2023-11-29 00:43:21,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=399, PETRI_PLACES=110, PETRI_TRANSITIONS=75} [2023-11-29 00:43:21,595 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 35 predicate places. [2023-11-29 00:43:21,595 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 75 transitions, 399 flow [2023-11-29 00:43:21,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:21,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:21,596 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:21,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2023-11-29 00:43:21,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:21,796 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:21,796 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash -972814004, now seen corresponding path program 1 times [2023-11-29 00:43:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:21,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2124624285] [2023-11-29 00:43:21,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:21,797 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 [2023-11-29 00:43:21,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:21,798 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:21,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-29 00:43:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:22,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:22,009 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:22,035 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:22,035 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:22,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2124624285] [2023-11-29 00:43:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2124624285] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:22,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779433436] [2023-11-29 00:43:22,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:22,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:22,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2023-11-29 00:43:22,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 75 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:22,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:22,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2023-11-29 00:43:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:24,483 INFO L124 PetriNetUnfolderBase]: 8229/17129 cut-off events. [2023-11-29 00:43:24,483 INFO L125 PetriNetUnfolderBase]: For 17067/17067 co-relation queries the response was YES. [2023-11-29 00:43:24,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45477 conditions, 17129 events. 8229/17129 cut-off events. For 17067/17067 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 143080 event pairs, 5569 based on Foata normal form. 94/17058 useless extension candidates. Maximal degree in co-relation 45442. Up to 10297 conditions per place. [2023-11-29 00:43:24,609 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 95 selfloop transitions, 4 changer transitions 0/122 dead transitions. [2023-11-29 00:43:24,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 822 flow [2023-11-29 00:43:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:43:24,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:43:24,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 254 transitions. [2023-11-29 00:43:24,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8037974683544303 [2023-11-29 00:43:24,611 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 254 transitions. [2023-11-29 00:43:24,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 254 transitions. [2023-11-29 00:43:24,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:24,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 254 transitions. [2023-11-29 00:43:24,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 63.5) internal successors, (254), 4 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:24,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:24,612 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:24,612 INFO L175 Difference]: Start difference. First operand has 110 places, 75 transitions, 399 flow. Second operand 4 states and 254 transitions. [2023-11-29 00:43:24,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 822 flow [2023-11-29 00:43:24,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 122 transitions, 816 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:24,658 INFO L231 Difference]: Finished difference. Result has 114 places, 77 transitions, 429 flow [2023-11-29 00:43:24,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=429, PETRI_PLACES=114, PETRI_TRANSITIONS=77} [2023-11-29 00:43:24,659 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 39 predicate places. [2023-11-29 00:43:24,659 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 77 transitions, 429 flow [2023-11-29 00:43:24,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:24,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:24,659 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:24,663 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2023-11-29 00:43:24,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:24,860 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:24,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:24,860 INFO L85 PathProgramCache]: Analyzing trace with hash 686756740, now seen corresponding path program 2 times [2023-11-29 00:43:24,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:24,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871272838] [2023-11-29 00:43:24,861 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:24,861 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 [2023-11-29 00:43:24,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:24,862 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:24,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2023-11-29 00:43:24,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:43:24,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:25,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:25,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:25,026 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:25,026 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:25,027 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:25,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1871272838] [2023-11-29 00:43:25,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1871272838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:25,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:25,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:25,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629417829] [2023-11-29 00:43:25,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:25,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:25,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:25,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:25,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:25,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2023-11-29 00:43:25,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 77 transitions, 429 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:25,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:25,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2023-11-29 00:43:25,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:27,780 INFO L124 PetriNetUnfolderBase]: 9228/19144 cut-off events. [2023-11-29 00:43:27,780 INFO L125 PetriNetUnfolderBase]: For 22090/22112 co-relation queries the response was YES. [2023-11-29 00:43:27,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51052 conditions, 19144 events. 9228/19144 cut-off events. For 22090/22112 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 162490 event pairs, 4445 based on Foata normal form. 94/19070 useless extension candidates. Maximal degree in co-relation 51015. Up to 12788 conditions per place. [2023-11-29 00:43:27,899 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 78 selfloop transitions, 5 changer transitions 3/109 dead transitions. [2023-11-29 00:43:27,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 766 flow [2023-11-29 00:43:27,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:43:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:43:27,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 243 transitions. [2023-11-29 00:43:27,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7689873417721519 [2023-11-29 00:43:27,901 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 243 transitions. [2023-11-29 00:43:27,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 243 transitions. [2023-11-29 00:43:27,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:27,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 243 transitions. [2023-11-29 00:43:27,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:27,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:27,902 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:27,902 INFO L175 Difference]: Start difference. First operand has 114 places, 77 transitions, 429 flow. Second operand 4 states and 243 transitions. [2023-11-29 00:43:27,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 766 flow [2023-11-29 00:43:27,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 109 transitions, 758 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-29 00:43:27,952 INFO L231 Difference]: Finished difference. Result has 119 places, 80 transitions, 487 flow [2023-11-29 00:43:27,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=425, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=487, PETRI_PLACES=119, PETRI_TRANSITIONS=80} [2023-11-29 00:43:27,953 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 44 predicate places. [2023-11-29 00:43:27,953 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 80 transitions, 487 flow [2023-11-29 00:43:27,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:27,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:27,953 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:27,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Ended with exit code 0 [2023-11-29 00:43:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:28,153 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:28,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:28,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1046936102, now seen corresponding path program 1 times [2023-11-29 00:43:28,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:28,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714827476] [2023-11-29 00:43:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:28,155 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 [2023-11-29 00:43:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:28,155 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:28,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2023-11-29 00:43:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:28,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:28,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:28,389 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:28,389 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:28,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714827476] [2023-11-29 00:43:28,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714827476] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:28,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:28,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:28,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624977060] [2023-11-29 00:43:28,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:28,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:28,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:28,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:28,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:28,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2023-11-29 00:43:28,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 80 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:28,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:28,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2023-11-29 00:43:28,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:31,574 INFO L124 PetriNetUnfolderBase]: 10416/21440 cut-off events. [2023-11-29 00:43:31,574 INFO L125 PetriNetUnfolderBase]: For 27350/27378 co-relation queries the response was YES. [2023-11-29 00:43:31,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57450 conditions, 21440 events. 10416/21440 cut-off events. For 27350/27378 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 186120 event pairs, 6663 based on Foata normal form. 2/20666 useless extension candidates. Maximal degree in co-relation 57411. Up to 14838 conditions per place. [2023-11-29 00:43:31,730 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 81 selfloop transitions, 6 changer transitions 0/112 dead transitions. [2023-11-29 00:43:31,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 112 transitions, 816 flow [2023-11-29 00:43:31,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:43:31,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:43:31,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2023-11-29 00:43:31,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7658227848101266 [2023-11-29 00:43:31,731 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 242 transitions. [2023-11-29 00:43:31,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 242 transitions. [2023-11-29 00:43:31,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:31,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 242 transitions. [2023-11-29 00:43:31,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:31,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:31,733 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:31,733 INFO L175 Difference]: Start difference. First operand has 119 places, 80 transitions, 487 flow. Second operand 4 states and 242 transitions. [2023-11-29 00:43:31,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 112 transitions, 816 flow [2023-11-29 00:43:31,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 112 transitions, 802 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 00:43:31,792 INFO L231 Difference]: Finished difference. Result has 120 places, 83 transitions, 529 flow [2023-11-29 00:43:31,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=120, PETRI_TRANSITIONS=83} [2023-11-29 00:43:31,793 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 45 predicate places. [2023-11-29 00:43:31,793 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 83 transitions, 529 flow [2023-11-29 00:43:31,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:31,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:31,793 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:31,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:31,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:31,994 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:31,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:31,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1044389994, now seen corresponding path program 2 times [2023-11-29 00:43:31,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:31,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281399344] [2023-11-29 00:43:31,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:43:31,995 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 [2023-11-29 00:43:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:31,995 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:31,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2023-11-29 00:43:32,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:43:32,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:32,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:32,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:32,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:32,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:32,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281399344] [2023-11-29 00:43:32,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281399344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:32,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:32,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:32,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421120384] [2023-11-29 00:43:32,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:32,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:32,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:32,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:32,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:32,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2023-11-29 00:43:32,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 83 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:32,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:32,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2023-11-29 00:43:32,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:35,441 INFO L124 PetriNetUnfolderBase]: 10466/21716 cut-off events. [2023-11-29 00:43:35,442 INFO L125 PetriNetUnfolderBase]: For 30517/30574 co-relation queries the response was YES. [2023-11-29 00:43:35,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59574 conditions, 21716 events. 10466/21716 cut-off events. For 30517/30574 co-relation queries the response was YES. Maximal size of possible extension queue 491. Compared 188012 event pairs, 7136 based on Foata normal form. 18/21561 useless extension candidates. Maximal degree in co-relation 59535. Up to 12101 conditions per place. [2023-11-29 00:43:35,608 INFO L140 encePairwiseOnDemand]: 73/79 looper letters, 92 selfloop transitions, 8 changer transitions 1/126 dead transitions. [2023-11-29 00:43:35,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 126 transitions, 969 flow [2023-11-29 00:43:35,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 00:43:35,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 00:43:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 294 transitions. [2023-11-29 00:43:35,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7443037974683544 [2023-11-29 00:43:35,610 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 294 transitions. [2023-11-29 00:43:35,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 294 transitions. [2023-11-29 00:43:35,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:35,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 294 transitions. [2023-11-29 00:43:35,611 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 58.8) internal successors, (294), 5 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:35,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:35,611 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 79.0) internal successors, (474), 6 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:35,611 INFO L175 Difference]: Start difference. First operand has 120 places, 83 transitions, 529 flow. Second operand 5 states and 294 transitions. [2023-11-29 00:43:35,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 126 transitions, 969 flow [2023-11-29 00:43:35,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 126 transitions, 969 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:43:35,663 INFO L231 Difference]: Finished difference. Result has 126 places, 84 transitions, 560 flow [2023-11-29 00:43:35,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=560, PETRI_PLACES=126, PETRI_TRANSITIONS=84} [2023-11-29 00:43:35,663 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 51 predicate places. [2023-11-29 00:43:35,664 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 84 transitions, 560 flow [2023-11-29 00:43:35,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:35,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:35,664 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:35,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2023-11-29 00:43:35,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:35,864 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:35,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:35,865 INFO L85 PathProgramCache]: Analyzing trace with hash 2143827128, now seen corresponding path program 3 times [2023-11-29 00:43:35,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:35,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [18153153] [2023-11-29 00:43:35,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:43:35,865 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 [2023-11-29 00:43:35,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:35,866 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:35,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2023-11-29 00:43:35,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:43:35,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:43:36,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 00:43:36,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:36,048 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:36,048 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:36,048 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:36,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [18153153] [2023-11-29 00:43:36,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [18153153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:36,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:36,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:43:36,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642205619] [2023-11-29 00:43:36,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:36,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:43:36,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:36,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:43:36,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:43:36,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 79 [2023-11-29 00:43:36,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 84 transitions, 560 flow. Second operand has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:36,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:36,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 79 [2023-11-29 00:43:36,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:39,278 INFO L124 PetriNetUnfolderBase]: 10158/20974 cut-off events. [2023-11-29 00:43:39,278 INFO L125 PetriNetUnfolderBase]: For 34032/34065 co-relation queries the response was YES. [2023-11-29 00:43:39,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58809 conditions, 20974 events. 10158/20974 cut-off events. For 34032/34065 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 180296 event pairs, 6718 based on Foata normal form. 104/20921 useless extension candidates. Maximal degree in co-relation 58767. Up to 12123 conditions per place. [2023-11-29 00:43:39,455 INFO L140 encePairwiseOnDemand]: 74/79 looper letters, 90 selfloop transitions, 8 changer transitions 2/125 dead transitions. [2023-11-29 00:43:39,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 125 transitions, 989 flow [2023-11-29 00:43:39,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:43:39,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:43:39,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2023-11-29 00:43:39,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7848101265822784 [2023-11-29 00:43:39,457 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 248 transitions. [2023-11-29 00:43:39,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 248 transitions. [2023-11-29 00:43:39,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:43:39,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 248 transitions. [2023-11-29 00:43:39,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,458 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 79.0) internal successors, (395), 5 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,459 INFO L175 Difference]: Start difference. First operand has 126 places, 84 transitions, 560 flow. Second operand 4 states and 248 transitions. [2023-11-29 00:43:39,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 125 transitions, 989 flow [2023-11-29 00:43:39,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 973 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 00:43:39,527 INFO L231 Difference]: Finished difference. Result has 127 places, 84 transitions, 564 flow [2023-11-29 00:43:39,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=564, PETRI_PLACES=127, PETRI_TRANSITIONS=84} [2023-11-29 00:43:39,528 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 52 predicate places. [2023-11-29 00:43:39,528 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 84 transitions, 564 flow [2023-11-29 00:43:39,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 51.5) internal successors, (206), 4 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:39,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:43:39,529 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:43:39,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Ended with exit code 0 [2023-11-29 00:43:39,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:39,729 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:43:39,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:43:39,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1697563582, now seen corresponding path program 1 times [2023-11-29 00:43:39,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:43:39,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350734744] [2023-11-29 00:43:39,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:43:39,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:43:39,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:43:39,731 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:43:39,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2023-11-29 00:43:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:43:40,043 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:43:40,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:43:40,500 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:43:40,501 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:43:40,560 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:43:40,560 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:43:40,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:43:40,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350734744] [2023-11-29 00:43:40,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350734744] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:43:40,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:43:40,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:43:40,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189774979] [2023-11-29 00:43:40,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:43:40,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:43:40,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:43:40,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:43:40,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:43:44,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:43:45,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:43:45,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 84 transitions, 564 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:43:45,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:43:45,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:43:45,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:43:46,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:43:50,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:43:55,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:43:59,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:01,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:06,009 INFO L124 PetriNetUnfolderBase]: 14234/27747 cut-off events. [2023-11-29 00:44:06,010 INFO L125 PetriNetUnfolderBase]: For 42288/42384 co-relation queries the response was YES. [2023-11-29 00:44:06,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77733 conditions, 27747 events. 14234/27747 cut-off events. For 42288/42384 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 231265 event pairs, 9331 based on Foata normal form. 9/27744 useless extension candidates. Maximal degree in co-relation 77690. Up to 16987 conditions per place. [2023-11-29 00:44:06,267 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 203 selfloop transitions, 25 changer transitions 0/247 dead transitions. [2023-11-29 00:44:06,267 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 247 transitions, 1920 flow [2023-11-29 00:44:06,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 00:44:06,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-29 00:44:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 790 transitions. [2023-11-29 00:44:06,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 00:44:06,270 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 790 transitions. [2023-11-29 00:44:06,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 790 transitions. [2023-11-29 00:44:06,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:06,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 790 transitions. [2023-11-29 00:44:06,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 52.666666666666664) internal successors, (790), 15 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:06,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:06,274 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 79.0) internal successors, (1264), 16 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:06,274 INFO L175 Difference]: Start difference. First operand has 127 places, 84 transitions, 564 flow. Second operand 15 states and 790 transitions. [2023-11-29 00:44:06,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 247 transitions, 1920 flow [2023-11-29 00:44:06,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 247 transitions, 1874 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-29 00:44:06,409 INFO L231 Difference]: Finished difference. Result has 148 places, 102 transitions, 805 flow [2023-11-29 00:44:06,409 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=805, PETRI_PLACES=148, PETRI_TRANSITIONS=102} [2023-11-29 00:44:06,409 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 73 predicate places. [2023-11-29 00:44:06,409 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 102 transitions, 805 flow [2023-11-29 00:44:06,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:06,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:06,410 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:06,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Ended with exit code 0 [2023-11-29 00:44:06,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:06,610 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:44:06,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:06,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1745653390, now seen corresponding path program 2 times [2023-11-29 00:44:06,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:06,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960312398] [2023-11-29 00:44:06,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:44:06,611 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:06,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:06,612 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:44:06,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2023-11-29 00:44:06,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:44:06,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:06,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:44:06,788 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:07,135 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:44:07,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:44:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:44:07,180 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:07,181 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:07,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960312398] [2023-11-29 00:44:07,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960312398] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:07,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:07,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:44:07,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561469668] [2023-11-29 00:44:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:07,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:44:07,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:44:07,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:44:10,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:11,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:44:11,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 102 transitions, 805 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:11,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:11,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:44:11,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:15,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:19,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:23,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.71s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:28,192 INFO L124 PetriNetUnfolderBase]: 14201/27433 cut-off events. [2023-11-29 00:44:28,192 INFO L125 PetriNetUnfolderBase]: For 68288/68376 co-relation queries the response was YES. [2023-11-29 00:44:28,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88700 conditions, 27433 events. 14201/27433 cut-off events. For 68288/68376 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 224581 event pairs, 9801 based on Foata normal form. 8/27416 useless extension candidates. Maximal degree in co-relation 88647. Up to 16787 conditions per place. [2023-11-29 00:44:28,478 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 170 selfloop transitions, 38 changer transitions 0/227 dead transitions. [2023-11-29 00:44:28,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 227 transitions, 1920 flow [2023-11-29 00:44:28,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:44:28,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:44:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 738 transitions. [2023-11-29 00:44:28,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6672694394213382 [2023-11-29 00:44:28,480 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 738 transitions. [2023-11-29 00:44:28,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 738 transitions. [2023-11-29 00:44:28,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:28,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 738 transitions. [2023-11-29 00:44:28,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:28,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:28,482 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:28,482 INFO L175 Difference]: Start difference. First operand has 148 places, 102 transitions, 805 flow. Second operand 14 states and 738 transitions. [2023-11-29 00:44:28,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 227 transitions, 1920 flow [2023-11-29 00:44:28,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 227 transitions, 1835 flow, removed 41 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:28,780 INFO L231 Difference]: Finished difference. Result has 169 places, 123 transitions, 1140 flow [2023-11-29 00:44:28,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1140, PETRI_PLACES=169, PETRI_TRANSITIONS=123} [2023-11-29 00:44:28,780 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 94 predicate places. [2023-11-29 00:44:28,781 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 123 transitions, 1140 flow [2023-11-29 00:44:28,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:28,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:28,781 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:28,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:28,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:28,981 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:44:28,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:28,982 INFO L85 PathProgramCache]: Analyzing trace with hash -407259688, now seen corresponding path program 3 times [2023-11-29 00:44:28,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:28,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466541240] [2023-11-29 00:44:28,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:44:28,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:28,983 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:44:28,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2023-11-29 00:44:29,156 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:44:29,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:29,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:44:29,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:29,583 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:44:29,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:44:29,632 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:44:29,632 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:29,632 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:29,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466541240] [2023-11-29 00:44:29,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466541240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:29,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:29,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:44:29,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753462334] [2023-11-29 00:44:29,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:29,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:44:29,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:29,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:44:29,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:44:31,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:44:31,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 123 transitions, 1140 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:31,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:31,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:44:31,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:37,836 INFO L124 PetriNetUnfolderBase]: 13444/26408 cut-off events. [2023-11-29 00:44:37,836 INFO L125 PetriNetUnfolderBase]: For 87627/87691 co-relation queries the response was YES. [2023-11-29 00:44:38,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90966 conditions, 26408 events. 13444/26408 cut-off events. For 87627/87691 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 219372 event pairs, 9842 based on Foata normal form. 11/26389 useless extension candidates. Maximal degree in co-relation 90903. Up to 15635 conditions per place. [2023-11-29 00:44:38,113 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 195 selfloop transitions, 42 changer transitions 0/257 dead transitions. [2023-11-29 00:44:38,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 257 transitions, 2636 flow [2023-11-29 00:44:38,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:44:38,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:44:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 742 transitions. [2023-11-29 00:44:38,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:44:38,115 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 742 transitions. [2023-11-29 00:44:38,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 742 transitions. [2023-11-29 00:44:38,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:38,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 742 transitions. [2023-11-29 00:44:38,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 53.0) internal successors, (742), 14 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,118 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,118 INFO L175 Difference]: Start difference. First operand has 169 places, 123 transitions, 1140 flow. Second operand 14 states and 742 transitions. [2023-11-29 00:44:38,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 257 transitions, 2636 flow [2023-11-29 00:44:38,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 257 transitions, 2499 flow, removed 67 selfloop flow, removed 2 redundant places. [2023-11-29 00:44:38,449 INFO L231 Difference]: Finished difference. Result has 188 places, 138 transitions, 1449 flow [2023-11-29 00:44:38,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1449, PETRI_PLACES=188, PETRI_TRANSITIONS=138} [2023-11-29 00:44:38,449 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 113 predicate places. [2023-11-29 00:44:38,449 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 138 transitions, 1449 flow [2023-11-29 00:44:38,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:38,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:38,450 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:38,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2023-11-29 00:44:38,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:38,650 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:44:38,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:38,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1371947136, now seen corresponding path program 4 times [2023-11-29 00:44:38,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:38,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554458302] [2023-11-29 00:44:38,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:44:38,651 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 [2023-11-29 00:44:38,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:38,652 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:44:38,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2023-11-29 00:44:38,917 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:44:38,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:38,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:44:38,930 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:39,338 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:44:39,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:44:39,404 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:44:39,404 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:39,405 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:39,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554458302] [2023-11-29 00:44:39,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554458302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:39,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:39,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:44:39,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508955469] [2023-11-29 00:44:39,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:39,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:44:39,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:39,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:44:39,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:44:43,407 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:43,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:44:43,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 138 transitions, 1449 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:43,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:43,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:44:43,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:44:47,304 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.22s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:54,810 INFO L124 PetriNetUnfolderBase]: 14694/28428 cut-off events. [2023-11-29 00:44:54,810 INFO L125 PetriNetUnfolderBase]: For 89112/89168 co-relation queries the response was YES. [2023-11-29 00:44:55,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94882 conditions, 28428 events. 14694/28428 cut-off events. For 89112/89168 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 233997 event pairs, 10875 based on Foata normal form. 11/28414 useless extension candidates. Maximal degree in co-relation 94811. Up to 16987 conditions per place. [2023-11-29 00:44:55,159 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 167 selfloop transitions, 57 changer transitions 0/243 dead transitions. [2023-11-29 00:44:55,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 243 transitions, 2613 flow [2023-11-29 00:44:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:44:55,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:44:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 683 transitions. [2023-11-29 00:44:55,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6650438169425511 [2023-11-29 00:44:55,160 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 683 transitions. [2023-11-29 00:44:55,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 683 transitions. [2023-11-29 00:44:55,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:44:55,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 683 transitions. [2023-11-29 00:44:55,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.53846153846154) internal successors, (683), 13 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:44:55,163 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:44:55,163 INFO L175 Difference]: Start difference. First operand has 188 places, 138 transitions, 1449 flow. Second operand 13 states and 683 transitions. [2023-11-29 00:44:55,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 243 transitions, 2613 flow [2023-11-29 00:44:55,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 243 transitions, 2502 flow, removed 27 selfloop flow, removed 5 redundant places. [2023-11-29 00:44:55,543 INFO L231 Difference]: Finished difference. Result has 202 places, 156 transitions, 1767 flow [2023-11-29 00:44:55,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1361, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1767, PETRI_PLACES=202, PETRI_TRANSITIONS=156} [2023-11-29 00:44:55,544 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 127 predicate places. [2023-11-29 00:44:55,544 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 156 transitions, 1767 flow [2023-11-29 00:44:55,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:55,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:44:55,544 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:44:55,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2023-11-29 00:44:55,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:55,745 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:44:55,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:44:55,745 INFO L85 PathProgramCache]: Analyzing trace with hash 4742512, now seen corresponding path program 5 times [2023-11-29 00:44:55,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:44:55,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [321753874] [2023-11-29 00:44:55,746 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:44:55,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:44:55,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:44:55,747 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:44:55,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2023-11-29 00:44:56,135 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 00:44:56,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:44:56,145 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:44:56,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:44:56,484 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:44:56,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:44:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:44:56,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:44:56,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:44:56,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [321753874] [2023-11-29 00:44:56,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [321753874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:44:56,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:44:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:44:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412128579] [2023-11-29 00:44:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:44:56,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:44:56,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:44:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:44:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:44:58,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:44:59,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:44:59,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 156 transitions, 1767 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:44:59,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:44:59,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:44:59,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:05,829 INFO L124 PetriNetUnfolderBase]: 13561/26659 cut-off events. [2023-11-29 00:45:05,830 INFO L125 PetriNetUnfolderBase]: For 87684/87754 co-relation queries the response was YES. [2023-11-29 00:45:06,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89980 conditions, 26659 events. 13561/26659 cut-off events. For 87684/87754 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 221561 event pairs, 9485 based on Foata normal form. 8/26631 useless extension candidates. Maximal degree in co-relation 89902. Up to 15635 conditions per place. [2023-11-29 00:45:06,209 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 182 selfloop transitions, 58 changer transitions 0/260 dead transitions. [2023-11-29 00:45:06,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 260 transitions, 3070 flow [2023-11-29 00:45:06,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:45:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:45:06,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 631 transitions. [2023-11-29 00:45:06,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6656118143459916 [2023-11-29 00:45:06,211 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 631 transitions. [2023-11-29 00:45:06,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 631 transitions. [2023-11-29 00:45:06,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:06,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 631 transitions. [2023-11-29 00:45:06,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.583333333333336) internal successors, (631), 12 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:06,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:06,213 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:06,213 INFO L175 Difference]: Start difference. First operand has 202 places, 156 transitions, 1767 flow. Second operand 12 states and 631 transitions. [2023-11-29 00:45:06,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 260 transitions, 3070 flow [2023-11-29 00:45:06,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 260 transitions, 2941 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-29 00:45:06,691 INFO L231 Difference]: Finished difference. Result has 213 places, 169 transitions, 1995 flow [2023-11-29 00:45:06,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1653, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1995, PETRI_PLACES=213, PETRI_TRANSITIONS=169} [2023-11-29 00:45:06,691 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 138 predicate places. [2023-11-29 00:45:06,691 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 169 transitions, 1995 flow [2023-11-29 00:45:06,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:06,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:06,692 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:06,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2023-11-29 00:45:06,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:06,892 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:45:06,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:06,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1233774562, now seen corresponding path program 6 times [2023-11-29 00:45:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:06,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783917895] [2023-11-29 00:45:06,893 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:45:06,893 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 [2023-11-29 00:45:06,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:06,894 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:45:06,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2023-11-29 00:45:07,088 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 00:45:07,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:45:07,092 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:45:07,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:07,466 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:45:07,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:45:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:45:07,527 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:07,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:07,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783917895] [2023-11-29 00:45:07,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783917895] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:07,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:07,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:45:07,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458973929] [2023-11-29 00:45:07,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:07,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:45:07,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:07,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:45:07,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:45:11,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:11,780 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:45:11,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 169 transitions, 1995 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:11,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:11,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:45:11,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:15,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:19,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.36s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:21,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.40s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:25,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.67s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:29,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:33,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:34,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:40,356 INFO L124 PetriNetUnfolderBase]: 14938/28589 cut-off events. [2023-11-29 00:45:40,356 INFO L125 PetriNetUnfolderBase]: For 109470/109510 co-relation queries the response was YES. [2023-11-29 00:45:40,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98232 conditions, 28589 events. 14938/28589 cut-off events. For 109470/109510 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 232030 event pairs, 11096 based on Foata normal form. 9/28581 useless extension candidates. Maximal degree in co-relation 98149. Up to 16846 conditions per place. [2023-11-29 00:45:40,807 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 218 selfloop transitions, 52 changer transitions 0/289 dead transitions. [2023-11-29 00:45:40,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 289 transitions, 3525 flow [2023-11-29 00:45:40,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:45:40,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:45:40,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 741 transitions. [2023-11-29 00:45:40,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6699819168173599 [2023-11-29 00:45:40,809 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 741 transitions. [2023-11-29 00:45:40,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 741 transitions. [2023-11-29 00:45:40,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:45:40,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 741 transitions. [2023-11-29 00:45:40,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 52.92857142857143) internal successors, (741), 14 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:40,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:40,811 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:40,811 INFO L175 Difference]: Start difference. First operand has 213 places, 169 transitions, 1995 flow. Second operand 14 states and 741 transitions. [2023-11-29 00:45:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 289 transitions, 3525 flow [2023-11-29 00:45:41,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 289 transitions, 3379 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-11-29 00:45:41,216 INFO L231 Difference]: Finished difference. Result has 229 places, 187 transitions, 2415 flow [2023-11-29 00:45:41,217 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=1891, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2415, PETRI_PLACES=229, PETRI_TRANSITIONS=187} [2023-11-29 00:45:41,217 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 154 predicate places. [2023-11-29 00:45:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 187 transitions, 2415 flow [2023-11-29 00:45:41,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:41,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:45:41,217 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:45:41,220 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Ended with exit code 0 [2023-11-29 00:45:41,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:41,418 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:45:41,418 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:45:41,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1553957006, now seen corresponding path program 7 times [2023-11-29 00:45:41,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:45:41,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238601807] [2023-11-29 00:45:41,419 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:45:41,419 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:45:41,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:45:41,420 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:45:41,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2023-11-29 00:45:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:45:41,703 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:45:41,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:45:42,046 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:45:42,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:45:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:45:42,204 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:45:42,204 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:45:42,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238601807] [2023-11-29 00:45:42,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238601807] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:45:42,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:45:42,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:45:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547923718] [2023-11-29 00:45:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:45:42,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:45:42,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:45:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:45:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:45:47,387 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.99s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:47,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:45:47,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 187 transitions, 2415 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:45:47,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:45:47,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:45:47,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:45:51,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:45:55,201 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.43s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:02,332 INFO L124 PetriNetUnfolderBase]: 14971/28985 cut-off events. [2023-11-29 00:46:02,332 INFO L125 PetriNetUnfolderBase]: For 106352/106424 co-relation queries the response was YES. [2023-11-29 00:46:02,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99374 conditions, 28985 events. 14971/28985 cut-off events. For 106352/106424 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 239135 event pairs, 10855 based on Foata normal form. 11/28986 useless extension candidates. Maximal degree in co-relation 99282. Up to 16846 conditions per place. [2023-11-29 00:46:02,807 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 212 selfloop transitions, 71 changer transitions 0/302 dead transitions. [2023-11-29 00:46:02,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 302 transitions, 3894 flow [2023-11-29 00:46:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:46:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:46:02,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 681 transitions. [2023-11-29 00:46:02,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6630963972736125 [2023-11-29 00:46:02,809 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 681 transitions. [2023-11-29 00:46:02,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 681 transitions. [2023-11-29 00:46:02,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:46:02,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 681 transitions. [2023-11-29 00:46:02,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.38461538461539) internal successors, (681), 13 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:02,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:46:02,813 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:46:02,813 INFO L175 Difference]: Start difference. First operand has 229 places, 187 transitions, 2415 flow. Second operand 13 states and 681 transitions. [2023-11-29 00:46:02,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 302 transitions, 3894 flow [2023-11-29 00:46:03,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 302 transitions, 3770 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-11-29 00:46:03,534 INFO L231 Difference]: Finished difference. Result has 243 places, 197 transitions, 2655 flow [2023-11-29 00:46:03,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=2291, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2655, PETRI_PLACES=243, PETRI_TRANSITIONS=197} [2023-11-29 00:46:03,534 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 168 predicate places. [2023-11-29 00:46:03,534 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 197 transitions, 2655 flow [2023-11-29 00:46:03,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:03,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:46:03,535 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:03,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2023-11-29 00:46:03,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:03,735 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:46:03,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:03,735 INFO L85 PathProgramCache]: Analyzing trace with hash 928598472, now seen corresponding path program 8 times [2023-11-29 00:46:03,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:03,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134399343] [2023-11-29 00:46:03,736 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:46:03,736 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 [2023-11-29 00:46:03,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:03,737 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:46:03,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2023-11-29 00:46:03,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:46:03,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:46:03,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:46:03,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:04,306 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:46:04,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:46:04,361 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:46:04,361 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:46:04,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:04,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134399343] [2023-11-29 00:46:04,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134399343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:04,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:04,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:46:04,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945209273] [2023-11-29 00:46:04,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:04,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:46:04,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:04,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:46:04,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:46:09,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:09,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:46:09,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 197 transitions, 2655 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:09,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:46:09,640 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:46:09,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:46:13,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:16,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:21,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.42s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:27,775 INFO L124 PetriNetUnfolderBase]: 15015/29044 cut-off events. [2023-11-29 00:46:27,775 INFO L125 PetriNetUnfolderBase]: For 109017/109081 co-relation queries the response was YES. [2023-11-29 00:46:28,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99448 conditions, 29044 events. 15015/29044 cut-off events. For 109017/109081 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 239429 event pairs, 10365 based on Foata normal form. 9/29041 useless extension candidates. Maximal degree in co-relation 99351. Up to 16846 conditions per place. [2023-11-29 00:46:28,270 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 239 selfloop transitions, 66 changer transitions 0/324 dead transitions. [2023-11-29 00:46:28,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 324 transitions, 4498 flow [2023-11-29 00:46:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 00:46:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-29 00:46:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 737 transitions. [2023-11-29 00:46:28,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.666365280289331 [2023-11-29 00:46:28,272 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 737 transitions. [2023-11-29 00:46:28,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 737 transitions. [2023-11-29 00:46:28,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:46:28,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 737 transitions. [2023-11-29 00:46:28,273 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 52.642857142857146) internal successors, (737), 14 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:28,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:28,274 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 79.0) internal successors, (1185), 15 states have internal predecessors, (1185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:28,274 INFO L175 Difference]: Start difference. First operand has 243 places, 197 transitions, 2655 flow. Second operand 14 states and 737 transitions. [2023-11-29 00:46:28,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 324 transitions, 4498 flow [2023-11-29 00:46:29,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 324 transitions, 4342 flow, removed 20 selfloop flow, removed 7 redundant places. [2023-11-29 00:46:29,117 INFO L231 Difference]: Finished difference. Result has 258 places, 213 transitions, 3092 flow [2023-11-29 00:46:29,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3092, PETRI_PLACES=258, PETRI_TRANSITIONS=213} [2023-11-29 00:46:29,118 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 183 predicate places. [2023-11-29 00:46:29,118 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 213 transitions, 3092 flow [2023-11-29 00:46:29,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:29,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:46:29,118 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:29,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2023-11-29 00:46:29,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:29,319 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:46:29,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:29,319 INFO L85 PathProgramCache]: Analyzing trace with hash -279355248, now seen corresponding path program 9 times [2023-11-29 00:46:29,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:29,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656721500] [2023-11-29 00:46:29,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:46:29,319 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 [2023-11-29 00:46:29,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:29,320 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:46:29,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2023-11-29 00:46:29,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:46:29,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:46:29,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:46:29,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:29,827 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:46:29,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:46:29,976 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:46:29,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:46:29,976 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:29,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656721500] [2023-11-29 00:46:29,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656721500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:29,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:29,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:46:29,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808638467] [2023-11-29 00:46:29,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:29,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:46:29,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:29,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:46:29,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:46:34,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:34,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:46:34,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 213 transitions, 3092 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:34,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:46:34,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:46:34,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:46:36,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:39,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:43,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:46:50,233 INFO L124 PetriNetUnfolderBase]: 14971/28978 cut-off events. [2023-11-29 00:46:50,233 INFO L125 PetriNetUnfolderBase]: For 115188/115256 co-relation queries the response was YES. [2023-11-29 00:46:50,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100252 conditions, 28978 events. 14971/28978 cut-off events. For 115188/115256 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 238832 event pairs, 10348 based on Foata normal form. 9/28977 useless extension candidates. Maximal degree in co-relation 100146. Up to 16846 conditions per place. [2023-11-29 00:46:50,735 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 212 selfloop transitions, 72 changer transitions 0/303 dead transitions. [2023-11-29 00:46:50,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 303 transitions, 4249 flow [2023-11-29 00:46:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:46:50,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:46:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 627 transitions. [2023-11-29 00:46:50,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6613924050632911 [2023-11-29 00:46:50,737 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 627 transitions. [2023-11-29 00:46:50,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 627 transitions. [2023-11-29 00:46:50,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:46:50,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 627 transitions. [2023-11-29 00:46:50,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.25) internal successors, (627), 12 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:50,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:50,739 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:50,739 INFO L175 Difference]: Start difference. First operand has 258 places, 213 transitions, 3092 flow. Second operand 12 states and 627 transitions. [2023-11-29 00:46:50,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 303 transitions, 4249 flow [2023-11-29 00:46:51,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 303 transitions, 4063 flow, removed 86 selfloop flow, removed 3 redundant places. [2023-11-29 00:46:51,537 INFO L231 Difference]: Finished difference. Result has 269 places, 210 transitions, 3024 flow [2023-11-29 00:46:51,538 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=2836, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3024, PETRI_PLACES=269, PETRI_TRANSITIONS=210} [2023-11-29 00:46:51,538 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 194 predicate places. [2023-11-29 00:46:51,538 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 210 transitions, 3024 flow [2023-11-29 00:46:51,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:51,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:46:51,538 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:46:51,541 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2023-11-29 00:46:51,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:51,739 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:46:51,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:46:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1551305038, now seen corresponding path program 10 times [2023-11-29 00:46:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:46:51,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589805466] [2023-11-29 00:46:51,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:46:51,740 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:46:51,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:46:51,741 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:46:51,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2023-11-29 00:46:52,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:46:52,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:46:52,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:46:52,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:46:52,526 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:46:52,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:46:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:46:52,598 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:46:52,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:46:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589805466] [2023-11-29 00:46:52,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589805466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:46:52,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:46:52,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:46:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53802333] [2023-11-29 00:46:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:46:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:46:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:46:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:46:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:46:54,674 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:46:54,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 210 transitions, 3024 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:46:54,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:46:54,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:46:54,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:47:02,113 INFO L124 PetriNetUnfolderBase]: 13958/27413 cut-off events. [2023-11-29 00:47:02,113 INFO L125 PetriNetUnfolderBase]: For 122875/122945 co-relation queries the response was YES. [2023-11-29 00:47:02,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96936 conditions, 27413 events. 13958/27413 cut-off events. For 122875/122945 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 227927 event pairs, 10088 based on Foata normal form. 11/27367 useless extension candidates. Maximal degree in co-relation 96827. Up to 15635 conditions per place. [2023-11-29 00:47:02,616 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 203 selfloop transitions, 86 changer transitions 0/309 dead transitions. [2023-11-29 00:47:02,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 309 transitions, 4650 flow [2023-11-29 00:47:02,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:47:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:47:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 682 transitions. [2023-11-29 00:47:02,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6640701071080818 [2023-11-29 00:47:02,619 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 682 transitions. [2023-11-29 00:47:02,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 682 transitions. [2023-11-29 00:47:02,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:47:02,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 682 transitions. [2023-11-29 00:47:02,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.46153846153846) internal successors, (682), 13 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:02,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:47:02,621 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:47:02,622 INFO L175 Difference]: Start difference. First operand has 269 places, 210 transitions, 3024 flow. Second operand 13 states and 682 transitions. [2023-11-29 00:47:02,622 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 309 transitions, 4650 flow [2023-11-29 00:47:03,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 309 transitions, 4514 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-29 00:47:03,505 INFO L231 Difference]: Finished difference. Result has 280 places, 232 transitions, 3641 flow [2023-11-29 00:47:03,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=2900, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3641, PETRI_PLACES=280, PETRI_TRANSITIONS=232} [2023-11-29 00:47:03,506 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 205 predicate places. [2023-11-29 00:47:03,506 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 232 transitions, 3641 flow [2023-11-29 00:47:03,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:03,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:47:03,506 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:47:03,510 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Ended with exit code 0 [2023-11-29 00:47:03,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:03,707 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:47:03,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:03,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1310171824, now seen corresponding path program 11 times [2023-11-29 00:47:03,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:03,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674670459] [2023-11-29 00:47:03,708 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:47:03,708 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 [2023-11-29 00:47:03,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:03,709 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:47:03,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2023-11-29 00:47:04,163 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 00:47:04,163 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:47:04,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:47:04,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:47:04,590 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:47:04,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:47:04,661 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:47:04,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:47:04,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:04,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674670459] [2023-11-29 00:47:04,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674670459] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:47:04,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:47:04,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:47:04,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531907876] [2023-11-29 00:47:04,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:04,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:47:04,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:04,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:47:04,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:47:09,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:47:09,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:47:09,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 232 transitions, 3641 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:09,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:47:09,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:47:09,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:47:14,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:47:17,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:47:25,900 INFO L124 PetriNetUnfolderBase]: 15145/29282 cut-off events. [2023-11-29 00:47:25,900 INFO L125 PetriNetUnfolderBase]: For 135583/135649 co-relation queries the response was YES. [2023-11-29 00:47:26,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103518 conditions, 29282 events. 15145/29282 cut-off events. For 135583/135649 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 241042 event pairs, 10414 based on Foata normal form. 9/29278 useless extension candidates. Maximal degree in co-relation 103402. Up to 16846 conditions per place. [2023-11-29 00:47:26,574 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 239 selfloop transitions, 77 changer transitions 0/335 dead transitions. [2023-11-29 00:47:26,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 335 transitions, 5306 flow [2023-11-29 00:47:26,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:47:26,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:47:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 686 transitions. [2023-11-29 00:47:26,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.667964946445959 [2023-11-29 00:47:26,576 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 686 transitions. [2023-11-29 00:47:26,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 686 transitions. [2023-11-29 00:47:26,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:47:26,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 686 transitions. [2023-11-29 00:47:26,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.76923076923077) internal successors, (686), 13 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:26,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:47:26,578 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:47:26,578 INFO L175 Difference]: Start difference. First operand has 280 places, 232 transitions, 3641 flow. Second operand 13 states and 686 transitions. [2023-11-29 00:47:26,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 335 transitions, 5306 flow [2023-11-29 00:47:27,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 335 transitions, 5125 flow, removed 71 selfloop flow, removed 4 redundant places. [2023-11-29 00:47:27,496 INFO L231 Difference]: Finished difference. Result has 294 places, 245 transitions, 4022 flow [2023-11-29 00:47:27,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4022, PETRI_PLACES=294, PETRI_TRANSITIONS=245} [2023-11-29 00:47:27,497 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 219 predicate places. [2023-11-29 00:47:27,497 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 245 transitions, 4022 flow [2023-11-29 00:47:27,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:27,497 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:47:27,497 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:47:27,501 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Ended with exit code 0 [2023-11-29 00:47:27,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:27,698 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:47:27,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:27,698 INFO L85 PathProgramCache]: Analyzing trace with hash 750622904, now seen corresponding path program 12 times [2023-11-29 00:47:27,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:27,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487051533] [2023-11-29 00:47:27,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:47:27,698 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 [2023-11-29 00:47:27,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:27,699 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:47:27,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2023-11-29 00:47:27,886 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 00:47:27,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:47:27,891 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:47:27,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:47:28,285 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:47:28,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:47:28,340 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:47:28,340 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:47:28,340 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:28,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487051533] [2023-11-29 00:47:28,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [487051533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:47:28,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:47:28,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:47:28,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438093973] [2023-11-29 00:47:28,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:28,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:47:28,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:28,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:47:28,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:47:29,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:47:29,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 245 transitions, 4022 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:47:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:47:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:47:38,733 INFO L124 PetriNetUnfolderBase]: 14056/27757 cut-off events. [2023-11-29 00:47:38,733 INFO L125 PetriNetUnfolderBase]: For 133403/133505 co-relation queries the response was YES. [2023-11-29 00:47:39,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99517 conditions, 27757 events. 14056/27757 cut-off events. For 133403/133505 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 233069 event pairs, 9071 based on Foata normal form. 8/27712 useless extension candidates. Maximal degree in co-relation 99395. Up to 15776 conditions per place. [2023-11-29 00:47:39,348 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 204 selfloop transitions, 111 changer transitions 0/335 dead transitions. [2023-11-29 00:47:39,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 335 transitions, 5508 flow [2023-11-29 00:47:39,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:47:39,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:47:39,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 677 transitions. [2023-11-29 00:47:39,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6592015579357352 [2023-11-29 00:47:39,350 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 677 transitions. [2023-11-29 00:47:39,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 677 transitions. [2023-11-29 00:47:39,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:47:39,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 677 transitions. [2023-11-29 00:47:39,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.07692307692308) internal successors, (677), 13 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:39,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:47:39,353 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:47:39,353 INFO L175 Difference]: Start difference. First operand has 294 places, 245 transitions, 4022 flow. Second operand 13 states and 677 transitions. [2023-11-29 00:47:39,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 335 transitions, 5508 flow [2023-11-29 00:47:40,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 335 transitions, 5311 flow, removed 66 selfloop flow, removed 5 redundant places. [2023-11-29 00:47:40,313 INFO L231 Difference]: Finished difference. Result has 307 places, 262 transitions, 4525 flow [2023-11-29 00:47:40,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=3836, PETRI_DIFFERENCE_MINUEND_PLACES=289, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=4525, PETRI_PLACES=307, PETRI_TRANSITIONS=262} [2023-11-29 00:47:40,314 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 232 predicate places. [2023-11-29 00:47:40,314 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 262 transitions, 4525 flow [2023-11-29 00:47:40,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:40,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:47:40,315 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:47:40,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2023-11-29 00:47:40,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:47:40,515 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:47:40,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:47:40,515 INFO L85 PathProgramCache]: Analyzing trace with hash -853241814, now seen corresponding path program 13 times [2023-11-29 00:47:40,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:47:40,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884122043] [2023-11-29 00:47:40,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:47:40,516 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 [2023-11-29 00:47:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:47:40,517 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:47:40,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2023-11-29 00:47:40,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:47:40,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:47:40,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:47:41,137 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:47:41,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:47:41,287 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:47:41,287 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:47:41,287 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:47:41,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884122043] [2023-11-29 00:47:41,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [884122043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:47:41,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:47:41,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:47:41,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799057229] [2023-11-29 00:47:41,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:47:41,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:47:41,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:47:41,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:47:41,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:47:45,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:47:45,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:47:45,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 262 transitions, 4525 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:47:45,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:47:45,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:47:45,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:47:49,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:47:53,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:47:56,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.31s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:48:04,679 INFO L124 PetriNetUnfolderBase]: 15156/29308 cut-off events. [2023-11-29 00:48:04,679 INFO L125 PetriNetUnfolderBase]: For 149058/149126 co-relation queries the response was YES. [2023-11-29 00:48:05,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105467 conditions, 29308 events. 15156/29308 cut-off events. For 149058/149126 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 241859 event pairs, 10434 based on Foata normal form. 9/29299 useless extension candidates. Maximal degree in co-relation 105339. Up to 16846 conditions per place. [2023-11-29 00:48:05,482 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 232 selfloop transitions, 91 changer transitions 0/342 dead transitions. [2023-11-29 00:48:05,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 342 transitions, 5756 flow [2023-11-29 00:48:05,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:48:05,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:48:05,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 632 transitions. [2023-11-29 00:48:05,484 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 00:48:05,484 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 632 transitions. [2023-11-29 00:48:05,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 632 transitions. [2023-11-29 00:48:05,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:48:05,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 632 transitions. [2023-11-29 00:48:05,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.666666666666664) internal successors, (632), 12 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:05,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:05,486 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:05,486 INFO L175 Difference]: Start difference. First operand has 307 places, 262 transitions, 4525 flow. Second operand 12 states and 632 transitions. [2023-11-29 00:48:05,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 342 transitions, 5756 flow [2023-11-29 00:48:06,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 342 transitions, 5361 flow, removed 125 selfloop flow, removed 6 redundant places. [2023-11-29 00:48:06,474 INFO L231 Difference]: Finished difference. Result has 316 places, 264 transitions, 4475 flow [2023-11-29 00:48:06,474 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4222, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4475, PETRI_PLACES=316, PETRI_TRANSITIONS=264} [2023-11-29 00:48:06,475 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 241 predicate places. [2023-11-29 00:48:06,475 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 264 transitions, 4475 flow [2023-11-29 00:48:06,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:06,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:48:06,475 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:06,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2023-11-29 00:48:06,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:06,676 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:48:06,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:06,676 INFO L85 PathProgramCache]: Analyzing trace with hash -149043744, now seen corresponding path program 14 times [2023-11-29 00:48:06,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:06,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575414751] [2023-11-29 00:48:06,677 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:48:06,677 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 [2023-11-29 00:48:06,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:06,678 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:48:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2023-11-29 00:48:06,867 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:48:06,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:48:06,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:48:06,873 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:07,200 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:48:07,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:48:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:48:07,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:48:07,319 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:07,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575414751] [2023-11-29 00:48:07,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575414751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:07,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:07,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:48:07,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456751051] [2023-11-29 00:48:07,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:07,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:48:07,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:48:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:48:08,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:48:08,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 264 transitions, 4475 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:08,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:48:08,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:48:08,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:48:17,092 INFO L124 PetriNetUnfolderBase]: 13992/27543 cut-off events. [2023-11-29 00:48:17,093 INFO L125 PetriNetUnfolderBase]: For 134863/134935 co-relation queries the response was YES. [2023-11-29 00:48:17,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99007 conditions, 27543 events. 13992/27543 cut-off events. For 134863/134935 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 230099 event pairs, 10101 based on Foata normal form. 10/27500 useless extension candidates. Maximal degree in co-relation 98875. Up to 15635 conditions per place. [2023-11-29 00:48:17,835 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 224 selfloop transitions, 88 changer transitions 0/332 dead transitions. [2023-11-29 00:48:17,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 332 transitions, 5496 flow [2023-11-29 00:48:17,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:48:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:48:17,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 635 transitions. [2023-11-29 00:48:17,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.669831223628692 [2023-11-29 00:48:17,837 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 635 transitions. [2023-11-29 00:48:17,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 635 transitions. [2023-11-29 00:48:17,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:48:17,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 635 transitions. [2023-11-29 00:48:17,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.916666666666664) internal successors, (635), 12 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:17,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:17,839 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:17,839 INFO L175 Difference]: Start difference. First operand has 316 places, 264 transitions, 4475 flow. Second operand 12 states and 635 transitions. [2023-11-29 00:48:17,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 332 transitions, 5496 flow [2023-11-29 00:48:18,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 320 places, 332 transitions, 5333 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-11-29 00:48:18,798 INFO L231 Difference]: Finished difference. Result has 323 places, 263 transitions, 4486 flow [2023-11-29 00:48:18,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4243, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4486, PETRI_PLACES=323, PETRI_TRANSITIONS=263} [2023-11-29 00:48:18,799 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 248 predicate places. [2023-11-29 00:48:18,799 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 263 transitions, 4486 flow [2023-11-29 00:48:18,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:18,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:48:18,799 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:18,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Ended with exit code 0 [2023-11-29 00:48:18,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:19,000 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:48:19,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:19,000 INFO L85 PathProgramCache]: Analyzing trace with hash -177458882, now seen corresponding path program 15 times [2023-11-29 00:48:19,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:19,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194252212] [2023-11-29 00:48:19,000 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:48:19,001 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 [2023-11-29 00:48:19,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:19,001 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:48:19,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2023-11-29 00:48:19,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:48:19,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:48:19,198 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:48:19,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:19,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:48:19,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:48:19,646 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:48:19,646 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:48:19,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:19,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194252212] [2023-11-29 00:48:19,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1194252212] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:19,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:19,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:48:19,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099368618] [2023-11-29 00:48:19,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:19,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:48:19,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:19,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:48:19,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:48:21,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:48:21,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 263 transitions, 4486 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:21,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:48:21,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:48:21,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:48:29,758 INFO L124 PetriNetUnfolderBase]: 14106/27876 cut-off events. [2023-11-29 00:48:29,758 INFO L125 PetriNetUnfolderBase]: For 134781/134863 co-relation queries the response was YES. [2023-11-29 00:48:30,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100621 conditions, 27876 events. 14106/27876 cut-off events. For 134781/134863 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 233863 event pairs, 9787 based on Foata normal form. 10/27833 useless extension candidates. Maximal degree in co-relation 100486. Up to 15776 conditions per place. [2023-11-29 00:48:30,359 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 201 selfloop transitions, 120 changer transitions 0/341 dead transitions. [2023-11-29 00:48:30,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 341 transitions, 5807 flow [2023-11-29 00:48:30,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:48:30,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:48:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 628 transitions. [2023-11-29 00:48:30,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6624472573839663 [2023-11-29 00:48:30,361 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 628 transitions. [2023-11-29 00:48:30,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 628 transitions. [2023-11-29 00:48:30,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:48:30,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 628 transitions. [2023-11-29 00:48:30,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.333333333333336) internal successors, (628), 12 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:30,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:30,363 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:30,363 INFO L175 Difference]: Start difference. First operand has 323 places, 263 transitions, 4486 flow. Second operand 12 states and 628 transitions. [2023-11-29 00:48:30,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 341 transitions, 5807 flow [2023-11-29 00:48:31,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 341 transitions, 5610 flow, removed 11 selfloop flow, removed 8 redundant places. [2023-11-29 00:48:31,359 INFO L231 Difference]: Finished difference. Result has 330 places, 275 transitions, 4873 flow [2023-11-29 00:48:31,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4307, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4873, PETRI_PLACES=330, PETRI_TRANSITIONS=275} [2023-11-29 00:48:31,360 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 255 predicate places. [2023-11-29 00:48:31,360 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 275 transitions, 4873 flow [2023-11-29 00:48:31,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:31,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:48:31,361 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:31,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (46)] Ended with exit code 0 [2023-11-29 00:48:31,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:31,561 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:48:31,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:31,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1532463314, now seen corresponding path program 16 times [2023-11-29 00:48:31,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:31,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1146520550] [2023-11-29 00:48:31,562 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:48:31,562 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 [2023-11-29 00:48:31,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:31,563 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:48:31,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2023-11-29 00:48:31,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:48:31,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:48:31,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:48:31,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:32,210 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:48:32,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:48:32,335 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:48:32,335 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:48:32,336 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:32,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1146520550] [2023-11-29 00:48:32,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1146520550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:32,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:32,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:48:32,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695077066] [2023-11-29 00:48:32,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:32,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:48:32,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:32,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:48:32,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:48:33,773 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:48:33,774 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 275 transitions, 4873 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:33,774 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:48:33,774 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:48:33,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:48:42,335 INFO L124 PetriNetUnfolderBase]: 14042/27594 cut-off events. [2023-11-29 00:48:42,335 INFO L125 PetriNetUnfolderBase]: For 137170/137238 co-relation queries the response was YES. [2023-11-29 00:48:42,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99857 conditions, 27594 events. 14042/27594 cut-off events. For 137170/137238 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 230183 event pairs, 9588 based on Foata normal form. 8/27545 useless extension candidates. Maximal degree in co-relation 99718. Up to 15635 conditions per place. [2023-11-29 00:48:42,869 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 209 selfloop transitions, 114 changer transitions 0/343 dead transitions. [2023-11-29 00:48:42,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 343 transitions, 5958 flow [2023-11-29 00:48:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:48:42,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:48:42,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 631 transitions. [2023-11-29 00:48:42,870 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6656118143459916 [2023-11-29 00:48:42,870 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 631 transitions. [2023-11-29 00:48:42,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 631 transitions. [2023-11-29 00:48:42,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:48:42,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 631 transitions. [2023-11-29 00:48:42,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.583333333333336) internal successors, (631), 12 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:42,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:42,872 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:42,872 INFO L175 Difference]: Start difference. First operand has 330 places, 275 transitions, 4873 flow. Second operand 12 states and 631 transitions. [2023-11-29 00:48:42,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 343 transitions, 5958 flow [2023-11-29 00:48:43,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 343 transitions, 5798 flow, removed 14 selfloop flow, removed 6 redundant places. [2023-11-29 00:48:43,936 INFO L231 Difference]: Finished difference. Result has 339 places, 277 transitions, 5031 flow [2023-11-29 00:48:43,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4714, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5031, PETRI_PLACES=339, PETRI_TRANSITIONS=277} [2023-11-29 00:48:43,936 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 264 predicate places. [2023-11-29 00:48:43,936 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 277 transitions, 5031 flow [2023-11-29 00:48:43,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:43,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:48:43,937 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:48:43,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (47)] Ended with exit code 0 [2023-11-29 00:48:44,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:44,137 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:48:44,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:48:44,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1296989062, now seen corresponding path program 17 times [2023-11-29 00:48:44,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:48:44,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378233720] [2023-11-29 00:48:44,138 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:48:44,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:48:44,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:48:44,139 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:48:44,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2023-11-29 00:48:44,655 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 00:48:44,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:48:44,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:48:44,668 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:48:45,002 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:48:45,002 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:48:45,149 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:48:45,149 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:48:45,149 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:48:45,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378233720] [2023-11-29 00:48:45,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1378233720] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:48:45,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:48:45,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:48:45,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540299544] [2023-11-29 00:48:45,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:48:45,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:48:45,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:48:45,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:48:45,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:48:48,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:48:48,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:48:48,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 277 transitions, 5031 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:48:48,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:48:48,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:48:48,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:48:51,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:48:59,742 INFO L124 PetriNetUnfolderBase]: 15230/29448 cut-off events. [2023-11-29 00:48:59,743 INFO L125 PetriNetUnfolderBase]: For 147940/148004 co-relation queries the response was YES. [2023-11-29 00:49:00,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106195 conditions, 29448 events. 15230/29448 cut-off events. For 147940/148004 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 242841 event pairs, 10483 based on Foata normal form. 9/29438 useless extension candidates. Maximal degree in co-relation 106052. Up to 16846 conditions per place. [2023-11-29 00:49:00,330 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 210 selfloop transitions, 119 changer transitions 0/348 dead transitions. [2023-11-29 00:49:00,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 348 transitions, 6066 flow [2023-11-29 00:49:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:49:00,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:49:00,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 624 transitions. [2023-11-29 00:49:00,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6582278481012658 [2023-11-29 00:49:00,332 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 624 transitions. [2023-11-29 00:49:00,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 624 transitions. [2023-11-29 00:49:00,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:49:00,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 624 transitions. [2023-11-29 00:49:00,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.0) internal successors, (624), 12 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:00,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:00,334 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:00,334 INFO L175 Difference]: Start difference. First operand has 339 places, 277 transitions, 5031 flow. Second operand 12 states and 624 transitions. [2023-11-29 00:49:00,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 348 transitions, 6066 flow [2023-11-29 00:49:01,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 348 transitions, 5795 flow, removed 18 selfloop flow, removed 8 redundant places. [2023-11-29 00:49:01,440 INFO L231 Difference]: Finished difference. Result has 345 places, 276 transitions, 4990 flow [2023-11-29 00:49:01,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4677, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4990, PETRI_PLACES=345, PETRI_TRANSITIONS=276} [2023-11-29 00:49:01,441 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 270 predicate places. [2023-11-29 00:49:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 276 transitions, 4990 flow [2023-11-29 00:49:01,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:01,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:49:01,441 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:01,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (48)] Ended with exit code 0 [2023-11-29 00:49:01,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:49:01,642 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:49:01,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:01,642 INFO L85 PathProgramCache]: Analyzing trace with hash 962413488, now seen corresponding path program 18 times [2023-11-29 00:49:01,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:49:01,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638481896] [2023-11-29 00:49:01,642 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:49:01,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:49:01,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:49:01,643 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:49:01,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2023-11-29 00:49:01,843 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 00:49:01,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:49:01,847 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:49:01,849 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:02,115 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:49:02,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:49:02,253 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:49:02,253 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:49:02,253 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:49:02,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638481896] [2023-11-29 00:49:02,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638481896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:49:02,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:49:02,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:49:02,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594089238] [2023-11-29 00:49:02,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:49:02,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:49:02,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:49:02,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:49:02,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:49:04,814 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:05,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:49:05,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 276 transitions, 4990 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:05,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:49:05,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:49:05,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:49:13,353 INFO L124 PetriNetUnfolderBase]: 14058/27779 cut-off events. [2023-11-29 00:49:13,353 INFO L125 PetriNetUnfolderBase]: For 136422/136502 co-relation queries the response was YES. [2023-11-29 00:49:13,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100331 conditions, 27779 events. 14058/27779 cut-off events. For 136422/136502 co-relation queries the response was YES. Maximal size of possible extension queue 441. Compared 232990 event pairs, 9762 based on Foata normal form. 11/27737 useless extension candidates. Maximal degree in co-relation 100185. Up to 15776 conditions per place. [2023-11-29 00:49:13,931 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 210 selfloop transitions, 109 changer transitions 0/339 dead transitions. [2023-11-29 00:49:13,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 339 transitions, 5929 flow [2023-11-29 00:49:13,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:49:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:49:13,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 632 transitions. [2023-11-29 00:49:13,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 00:49:13,933 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 632 transitions. [2023-11-29 00:49:13,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 632 transitions. [2023-11-29 00:49:13,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:49:13,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 632 transitions. [2023-11-29 00:49:13,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.666666666666664) internal successors, (632), 12 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:13,934 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:13,935 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:13,935 INFO L175 Difference]: Start difference. First operand has 345 places, 276 transitions, 4990 flow. Second operand 12 states and 632 transitions. [2023-11-29 00:49:13,935 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 339 transitions, 5929 flow [2023-11-29 00:49:15,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 339 transitions, 5661 flow, removed 25 selfloop flow, removed 8 redundant places. [2023-11-29 00:49:15,176 INFO L231 Difference]: Finished difference. Result has 351 places, 273 transitions, 4884 flow [2023-11-29 00:49:15,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4626, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4884, PETRI_PLACES=351, PETRI_TRANSITIONS=273} [2023-11-29 00:49:15,177 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 276 predicate places. [2023-11-29 00:49:15,177 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 273 transitions, 4884 flow [2023-11-29 00:49:15,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:15,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:49:15,177 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:15,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2023-11-29 00:49:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:49:15,378 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:49:15,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:15,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2095731838, now seen corresponding path program 19 times [2023-11-29 00:49:15,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:49:15,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956515428] [2023-11-29 00:49:15,379 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:49:15,379 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 [2023-11-29 00:49:15,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:49:15,380 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:49:15,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2023-11-29 00:49:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:49:15,684 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:49:15,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:16,083 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:49:16,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:49:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:49:16,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:49:16,144 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:49:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956515428] [2023-11-29 00:49:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956515428] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:49:16,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:49:16,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:49:16,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016827900] [2023-11-29 00:49:16,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:49:16,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:49:16,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:49:16,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:49:16,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:49:21,023 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.97s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:21,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:49:21,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 273 transitions, 4884 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:21,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:49:21,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:49:21,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:49:25,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:33,721 INFO L124 PetriNetUnfolderBase]: 15383/29831 cut-off events. [2023-11-29 00:49:33,721 INFO L125 PetriNetUnfolderBase]: For 153954/154046 co-relation queries the response was YES. [2023-11-29 00:49:34,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108311 conditions, 29831 events. 15383/29831 cut-off events. For 153954/154046 co-relation queries the response was YES. Maximal size of possible extension queue 449. Compared 248427 event pairs, 10216 based on Foata normal form. 9/29812 useless extension candidates. Maximal degree in co-relation 108162. Up to 16987 conditions per place. [2023-11-29 00:49:34,559 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 285 selfloop transitions, 67 changer transitions 0/371 dead transitions. [2023-11-29 00:49:34,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 371 transitions, 6621 flow [2023-11-29 00:49:34,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:49:34,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:49:34,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 690 transitions. [2023-11-29 00:49:34,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6718597857838364 [2023-11-29 00:49:34,561 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 690 transitions. [2023-11-29 00:49:34,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 690 transitions. [2023-11-29 00:49:34,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:49:34,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 690 transitions. [2023-11-29 00:49:34,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 53.07692307692308) internal successors, (690), 13 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:34,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:49:34,563 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:49:34,563 INFO L175 Difference]: Start difference. First operand has 351 places, 273 transitions, 4884 flow. Second operand 13 states and 690 transitions. [2023-11-29 00:49:34,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 371 transitions, 6621 flow [2023-11-29 00:49:35,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 371 transitions, 6401 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-29 00:49:35,809 INFO L231 Difference]: Finished difference. Result has 362 places, 291 transitions, 5325 flow [2023-11-29 00:49:35,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=4674, PETRI_DIFFERENCE_MINUEND_PLACES=343, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5325, PETRI_PLACES=362, PETRI_TRANSITIONS=291} [2023-11-29 00:49:35,810 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 287 predicate places. [2023-11-29 00:49:35,810 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 291 transitions, 5325 flow [2023-11-29 00:49:35,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:35,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:49:35,810 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:49:35,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (50)] Ended with exit code 0 [2023-11-29 00:49:36,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:49:36,011 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:49:36,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:49:36,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1636307350, now seen corresponding path program 20 times [2023-11-29 00:49:36,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:49:36,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [216913006] [2023-11-29 00:49:36,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:49:36,012 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 [2023-11-29 00:49:36,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:49:36,014 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:49:36,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2023-11-29 00:49:36,219 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:49:36,219 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:49:36,223 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:49:36,224 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:49:36,566 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:49:36,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:49:36,612 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:49:36,612 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:49:36,612 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:49:36,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [216913006] [2023-11-29 00:49:36,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [216913006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:49:36,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:49:36,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:49:36,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104645961] [2023-11-29 00:49:36,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:49:36,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:49:36,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:49:36,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:49:36,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:49:40,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.28s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:41,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:49:41,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 291 transitions, 5325 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:49:41,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:49:41,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:49:41,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:49:45,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:48,512 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:50,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:49:52,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:01,296 INFO L124 PetriNetUnfolderBase]: 15416/29872 cut-off events. [2023-11-29 00:50:01,297 INFO L125 PetriNetUnfolderBase]: For 159668/159724 co-relation queries the response was YES. [2023-11-29 00:50:02,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108603 conditions, 29872 events. 15416/29872 cut-off events. For 159668/159724 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 248011 event pairs, 11041 based on Foata normal form. 11/29856 useless extension candidates. Maximal degree in co-relation 108447. Up to 16987 conditions per place. [2023-11-29 00:50:02,110 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 295 selfloop transitions, 70 changer transitions 0/384 dead transitions. [2023-11-29 00:50:02,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 384 transitions, 7033 flow [2023-11-29 00:50:02,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:50:02,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:50:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 690 transitions. [2023-11-29 00:50:02,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6718597857838364 [2023-11-29 00:50:02,112 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 690 transitions. [2023-11-29 00:50:02,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 690 transitions. [2023-11-29 00:50:02,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:02,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 690 transitions. [2023-11-29 00:50:02,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 53.07692307692308) internal successors, (690), 13 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:02,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:50:02,114 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:50:02,114 INFO L175 Difference]: Start difference. First operand has 362 places, 291 transitions, 5325 flow. Second operand 13 states and 690 transitions. [2023-11-29 00:50:02,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 384 transitions, 7033 flow [2023-11-29 00:50:03,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 384 transitions, 6794 flow, removed 100 selfloop flow, removed 4 redundant places. [2023-11-29 00:50:03,434 INFO L231 Difference]: Finished difference. Result has 376 places, 304 transitions, 5675 flow [2023-11-29 00:50:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=5112, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5675, PETRI_PLACES=376, PETRI_TRANSITIONS=304} [2023-11-29 00:50:03,435 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 301 predicate places. [2023-11-29 00:50:03,435 INFO L495 AbstractCegarLoop]: Abstraction has has 376 places, 304 transitions, 5675 flow [2023-11-29 00:50:03,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:03,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:03,435 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:03,439 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (51)] Ended with exit code 0 [2023-11-29 00:50:03,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:50:03,636 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:50:03,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:03,636 INFO L85 PathProgramCache]: Analyzing trace with hash -271840948, now seen corresponding path program 21 times [2023-11-29 00:50:03,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:50:03,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80441388] [2023-11-29 00:50:03,637 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:50:03,637 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 [2023-11-29 00:50:03,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:50:03,638 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:50:03,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2023-11-29 00:50:03,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:50:03,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:50:03,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:50:03,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:04,340 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:50:04,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:50:04,395 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:50:04,395 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:50:04,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:50:04,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80441388] [2023-11-29 00:50:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80441388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:04,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:04,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:50:04,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767827919] [2023-11-29 00:50:04,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:04,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:50:04,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:50:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:50:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:50:08,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.51s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:09,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:50:09,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 376 places, 304 transitions, 5675 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:09,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:09,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:50:09,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:11,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:14,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:23,777 INFO L124 PetriNetUnfolderBase]: 15288/29448 cut-off events. [2023-11-29 00:50:23,777 INFO L125 PetriNetUnfolderBase]: For 166927/166967 co-relation queries the response was YES. [2023-11-29 00:50:24,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107632 conditions, 29448 events. 15288/29448 cut-off events. For 166927/166967 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 241498 event pairs, 11135 based on Foata normal form. 8/29410 useless extension candidates. Maximal degree in co-relation 107470. Up to 16637 conditions per place. [2023-11-29 00:50:24,584 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 291 selfloop transitions, 87 changer transitions 0/397 dead transitions. [2023-11-29 00:50:24,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 397 transitions, 7350 flow [2023-11-29 00:50:24,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:50:24,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:50:24,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 685 transitions. [2023-11-29 00:50:24,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6669912366114897 [2023-11-29 00:50:24,585 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 685 transitions. [2023-11-29 00:50:24,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 685 transitions. [2023-11-29 00:50:24,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:24,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 685 transitions. [2023-11-29 00:50:24,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:24,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:50:24,587 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:50:24,587 INFO L175 Difference]: Start difference. First operand has 376 places, 304 transitions, 5675 flow. Second operand 13 states and 685 transitions. [2023-11-29 00:50:24,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 397 transitions, 7350 flow [2023-11-29 00:50:25,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 397 transitions, 7134 flow, removed 82 selfloop flow, removed 5 redundant places. [2023-11-29 00:50:26,006 INFO L231 Difference]: Finished difference. Result has 389 places, 321 transitions, 6197 flow [2023-11-29 00:50:26,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=5486, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6197, PETRI_PLACES=389, PETRI_TRANSITIONS=321} [2023-11-29 00:50:26,007 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 314 predicate places. [2023-11-29 00:50:26,007 INFO L495 AbstractCegarLoop]: Abstraction has has 389 places, 321 transitions, 6197 flow [2023-11-29 00:50:26,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:26,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:26,007 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:26,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (52)] Ended with exit code 0 [2023-11-29 00:50:26,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:50:26,207 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:50:26,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:26,208 INFO L85 PathProgramCache]: Analyzing trace with hash -2063226110, now seen corresponding path program 22 times [2023-11-29 00:50:26,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:50:26,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1957428250] [2023-11-29 00:50:26,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:50:26,208 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 [2023-11-29 00:50:26,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:50:26,209 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:50:26,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2023-11-29 00:50:26,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:50:26,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:50:26,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:50:26,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:26,856 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:50:26,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:50:26,964 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:50:26,965 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:50:26,965 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:50:26,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1957428250] [2023-11-29 00:50:26,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1957428250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:26,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:26,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:50:26,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095562467] [2023-11-29 00:50:26,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:26,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:50:26,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:50:26,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:50:26,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:50:31,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:31,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:50:31,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 321 transitions, 6197 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:31,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:31,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:50:31,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:50:35,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:38,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:42,532 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.40s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:51,817 INFO L124 PetriNetUnfolderBase]: 15461/29974 cut-off events. [2023-11-29 00:50:51,817 INFO L125 PetriNetUnfolderBase]: For 163594/163648 co-relation queries the response was YES. [2023-11-29 00:50:52,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109384 conditions, 29974 events. 15461/29974 cut-off events. For 163594/163648 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 248530 event pairs, 11075 based on Foata normal form. 11/29958 useless extension candidates. Maximal degree in co-relation 109216. Up to 16987 conditions per place. [2023-11-29 00:50:52,671 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 292 selfloop transitions, 84 changer transitions 0/395 dead transitions. [2023-11-29 00:50:52,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 395 transitions, 7588 flow [2023-11-29 00:50:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:50:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:50:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 636 transitions. [2023-11-29 00:50:52,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:50:52,673 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 636 transitions. [2023-11-29 00:50:52,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 636 transitions. [2023-11-29 00:50:52,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:50:52,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 636 transitions. [2023-11-29 00:50:52,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:52,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:52,676 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:52,676 INFO L175 Difference]: Start difference. First operand has 389 places, 321 transitions, 6197 flow. Second operand 12 states and 636 transitions. [2023-11-29 00:50:52,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 395 transitions, 7588 flow [2023-11-29 00:50:54,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 395 transitions, 7096 flow, removed 183 selfloop flow, removed 6 redundant places. [2023-11-29 00:50:54,059 INFO L231 Difference]: Finished difference. Result has 398 places, 323 transitions, 6090 flow [2023-11-29 00:50:54,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=5853, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6090, PETRI_PLACES=398, PETRI_TRANSITIONS=323} [2023-11-29 00:50:54,060 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 323 predicate places. [2023-11-29 00:50:54,060 INFO L495 AbstractCegarLoop]: Abstraction has has 398 places, 323 transitions, 6090 flow [2023-11-29 00:50:54,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:54,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:50:54,060 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:50:54,064 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (53)] Ended with exit code 0 [2023-11-29 00:50:54,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:50:54,261 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:50:54,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:50:54,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1242463086, now seen corresponding path program 23 times [2023-11-29 00:50:54,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:50:54,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688810293] [2023-11-29 00:50:54,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:50:54,262 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 [2023-11-29 00:50:54,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:50:54,262 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:50:54,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2023-11-29 00:50:54,719 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 00:50:54,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:50:54,730 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:50:54,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:50:55,034 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:50:55,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:50:55,173 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:50:55,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:50:55,173 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:50:55,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688810293] [2023-11-29 00:50:55,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688810293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:50:55,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:50:55,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:50:55,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239859572] [2023-11-29 00:50:55,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:50:55,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:50:55,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:50:55,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:50:55,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:50:58,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:50:59,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:50:59,821 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 398 places, 323 transitions, 6090 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:50:59,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:50:59,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:50:59,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:51:03,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:51:13,808 INFO L124 PetriNetUnfolderBase]: 15287/29450 cut-off events. [2023-11-29 00:51:13,808 INFO L125 PetriNetUnfolderBase]: For 154292/154336 co-relation queries the response was YES. [2023-11-29 00:51:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106813 conditions, 29450 events. 15287/29450 cut-off events. For 154292/154336 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 241746 event pairs, 11625 based on Foata normal form. 10/29417 useless extension candidates. Maximal degree in co-relation 106641. Up to 16637 conditions per place. [2023-11-29 00:51:14,693 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 292 selfloop transitions, 81 changer transitions 0/392 dead transitions. [2023-11-29 00:51:14,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 392 transitions, 7254 flow [2023-11-29 00:51:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:51:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:51:14,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 635 transitions. [2023-11-29 00:51:14,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.669831223628692 [2023-11-29 00:51:14,695 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 635 transitions. [2023-11-29 00:51:14,695 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 635 transitions. [2023-11-29 00:51:14,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:51:14,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 635 transitions. [2023-11-29 00:51:14,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.916666666666664) internal successors, (635), 12 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:14,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:14,698 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:14,698 INFO L175 Difference]: Start difference. First operand has 398 places, 323 transitions, 6090 flow. Second operand 12 states and 635 transitions. [2023-11-29 00:51:14,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 392 transitions, 7254 flow [2023-11-29 00:51:15,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 392 transitions, 7107 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-11-29 00:51:15,868 INFO L231 Difference]: Finished difference. Result has 405 places, 322 transitions, 6102 flow [2023-11-29 00:51:15,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=5869, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6102, PETRI_PLACES=405, PETRI_TRANSITIONS=322} [2023-11-29 00:51:15,869 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 330 predicate places. [2023-11-29 00:51:15,869 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 322 transitions, 6102 flow [2023-11-29 00:51:15,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:15,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:51:15,869 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:15,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2023-11-29 00:51:16,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:16,070 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:51:16,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:16,070 INFO L85 PathProgramCache]: Analyzing trace with hash -101857778, now seen corresponding path program 24 times [2023-11-29 00:51:16,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:16,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694248595] [2023-11-29 00:51:16,071 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:51:16,071 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 [2023-11-29 00:51:16,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:16,071 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:51:16,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2023-11-29 00:51:16,284 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 00:51:16,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:51:16,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:51:16,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:16,625 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:16,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:51:16,743 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:51:16,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:51:16,743 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694248595] [2023-11-29 00:51:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694248595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:16,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:16,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:51:16,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94519469] [2023-11-29 00:51:16,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:16,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:51:16,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:16,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:51:16,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:51:20,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:51:21,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:51:21,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 322 transitions, 6102 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:21,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:51:21,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:51:21,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:51:31,701 INFO L124 PetriNetUnfolderBase]: 15363/29579 cut-off events. [2023-11-29 00:51:31,701 INFO L125 PetriNetUnfolderBase]: For 157182/157224 co-relation queries the response was YES. [2023-11-29 00:51:32,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107784 conditions, 29579 events. 15363/29579 cut-off events. For 157182/157224 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 242732 event pairs, 11683 based on Foata normal form. 10/29537 useless extension candidates. Maximal degree in co-relation 107609. Up to 16637 conditions per place. [2023-11-29 00:51:32,792 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 286 selfloop transitions, 97 changer transitions 0/402 dead transitions. [2023-11-29 00:51:32,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 402 transitions, 7508 flow [2023-11-29 00:51:32,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:51:32,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:51:32,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 636 transitions. [2023-11-29 00:51:32,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:51:32,794 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 636 transitions. [2023-11-29 00:51:32,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 636 transitions. [2023-11-29 00:51:32,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:51:32,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 636 transitions. [2023-11-29 00:51:32,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:32,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:32,796 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:32,796 INFO L175 Difference]: Start difference. First operand has 405 places, 322 transitions, 6102 flow. Second operand 12 states and 636 transitions. [2023-11-29 00:51:32,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 402 transitions, 7508 flow [2023-11-29 00:51:33,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 402 transitions, 7333 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-11-29 00:51:34,006 INFO L231 Difference]: Finished difference. Result has 412 places, 334 transitions, 6468 flow [2023-11-29 00:51:34,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=5945, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6468, PETRI_PLACES=412, PETRI_TRANSITIONS=334} [2023-11-29 00:51:34,006 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 337 predicate places. [2023-11-29 00:51:34,007 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 334 transitions, 6468 flow [2023-11-29 00:51:34,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:34,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:51:34,007 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:34,009 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (55)] Ended with exit code 0 [2023-11-29 00:51:34,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:34,207 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:51:34,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1705596768, now seen corresponding path program 25 times [2023-11-29 00:51:34,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:34,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [94485466] [2023-11-29 00:51:34,208 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:51:34,208 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 [2023-11-29 00:51:34,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:34,209 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:51:34,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2023-11-29 00:51:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:51:34,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:51:34,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:34,875 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:34,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:51:34,984 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:51:34,984 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:51:34,985 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:34,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [94485466] [2023-11-29 00:51:34,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [94485466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:34,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:34,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:51:34,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954341335] [2023-11-29 00:51:34,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:34,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:51:34,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:34,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:51:34,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:51:38,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:51:39,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:51:39,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 334 transitions, 6468 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:39,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:51:39,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:51:39,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:51:42,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.37s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:51:52,401 INFO L124 PetriNetUnfolderBase]: 15355/29530 cut-off events. [2023-11-29 00:51:52,402 INFO L125 PetriNetUnfolderBase]: For 157236/157274 co-relation queries the response was YES. [2023-11-29 00:51:53,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107811 conditions, 29530 events. 15355/29530 cut-off events. For 157236/157274 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 241957 event pairs, 11153 based on Foata normal form. 8/29489 useless extension candidates. Maximal degree in co-relation 107632. Up to 16637 conditions per place. [2023-11-29 00:51:53,412 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 290 selfloop transitions, 95 changer transitions 0/404 dead transitions. [2023-11-29 00:51:53,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 404 transitions, 7611 flow [2023-11-29 00:51:53,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:51:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:51:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 639 transitions. [2023-11-29 00:51:53,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6740506329113924 [2023-11-29 00:51:53,414 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 639 transitions. [2023-11-29 00:51:53,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 639 transitions. [2023-11-29 00:51:53,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:51:53,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 639 transitions. [2023-11-29 00:51:53,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.25) internal successors, (639), 12 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:53,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:53,416 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:53,416 INFO L175 Difference]: Start difference. First operand has 412 places, 334 transitions, 6468 flow. Second operand 12 states and 639 transitions. [2023-11-29 00:51:53,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 404 transitions, 7611 flow [2023-11-29 00:51:54,859 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 404 transitions, 7495 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-29 00:51:54,866 INFO L231 Difference]: Finished difference. Result has 422 places, 336 transitions, 6624 flow [2023-11-29 00:51:54,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6352, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6624, PETRI_PLACES=422, PETRI_TRANSITIONS=336} [2023-11-29 00:51:54,867 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 347 predicate places. [2023-11-29 00:51:54,867 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 336 transitions, 6624 flow [2023-11-29 00:51:54,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:51:54,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:51:54,867 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:51:54,872 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (56)] Ended with exit code 0 [2023-11-29 00:51:55,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:51:55,068 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:51:55,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:51:55,068 INFO L85 PathProgramCache]: Analyzing trace with hash -961354110, now seen corresponding path program 26 times [2023-11-29 00:51:55,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:51:55,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877480226] [2023-11-29 00:51:55,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:51:55,069 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 [2023-11-29 00:51:55,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:51:55,070 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:51:55,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2023-11-29 00:51:55,291 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:51:55,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:51:55,296 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:51:55,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:51:55,597 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:51:55,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:51:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:51:55,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:51:55,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:51:55,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877480226] [2023-11-29 00:51:55,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877480226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:51:55,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:51:55,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:51:55,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283686341] [2023-11-29 00:51:55,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:51:55,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:51:55,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:51:55,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:51:55,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:51:59,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.30s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:52:00,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:52:00,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 336 transitions, 6624 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:00,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:00,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:52:00,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:03,758 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.23s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:52:14,083 INFO L124 PetriNetUnfolderBase]: 15535/30130 cut-off events. [2023-11-29 00:52:14,083 INFO L125 PetriNetUnfolderBase]: For 155942/156030 co-relation queries the response was YES. [2023-11-29 00:52:14,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109809 conditions, 30130 events. 15535/30130 cut-off events. For 155942/156030 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 250836 event pairs, 10261 based on Foata normal form. 9/30108 useless extension candidates. Maximal degree in co-relation 109626. Up to 16987 conditions per place. [2023-11-29 00:52:14,892 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 287 selfloop transitions, 96 changer transitions 0/402 dead transitions. [2023-11-29 00:52:14,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 402 transitions, 7685 flow [2023-11-29 00:52:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:52:14,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:52:14,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 636 transitions. [2023-11-29 00:52:14,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:52:14,893 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 636 transitions. [2023-11-29 00:52:14,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 636 transitions. [2023-11-29 00:52:14,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:14,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 636 transitions. [2023-11-29 00:52:14,895 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.0) internal successors, (636), 12 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:14,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:14,896 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:14,896 INFO L175 Difference]: Start difference. First operand has 422 places, 336 transitions, 6624 flow. Second operand 12 states and 636 transitions. [2023-11-29 00:52:14,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 402 transitions, 7685 flow [2023-11-29 00:52:16,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 402 transitions, 7503 flow, removed 8 selfloop flow, removed 7 redundant places. [2023-11-29 00:52:16,440 INFO L231 Difference]: Finished difference. Result has 429 places, 335 transitions, 6616 flow [2023-11-29 00:52:16,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6349, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6616, PETRI_PLACES=429, PETRI_TRANSITIONS=335} [2023-11-29 00:52:16,440 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 354 predicate places. [2023-11-29 00:52:16,440 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 335 transitions, 6616 flow [2023-11-29 00:52:16,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:16,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:16,441 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:16,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (57)] Ended with exit code 0 [2023-11-29 00:52:16,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:52:16,641 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:52:16,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:16,641 INFO L85 PathProgramCache]: Analyzing trace with hash 929952000, now seen corresponding path program 27 times [2023-11-29 00:52:16,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:52:16,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675716871] [2023-11-29 00:52:16,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:52:16,642 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 [2023-11-29 00:52:16,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:52:16,643 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:52:16,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2023-11-29 00:52:16,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:52:16,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:16,859 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:52:16,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:17,136 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:52:17,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:52:17,246 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:52:17,246 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:17,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:52:17,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [675716871] [2023-11-29 00:52:17,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [675716871] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:17,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:17,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:52:17,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895886581] [2023-11-29 00:52:17,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:17,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:52:17,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:52:17,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:52:17,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:52:18,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:52:18,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 335 transitions, 6616 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:18,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:18,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:52:18,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:28,574 INFO L124 PetriNetUnfolderBase]: 14208/27720 cut-off events. [2023-11-29 00:52:28,574 INFO L125 PetriNetUnfolderBase]: For 152862/152902 co-relation queries the response was YES. [2023-11-29 00:52:29,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101783 conditions, 27720 events. 14208/27720 cut-off events. For 152862/152902 co-relation queries the response was YES. Maximal size of possible extension queue 436. Compared 229622 event pairs, 10298 based on Foata normal form. 9/27659 useless extension candidates. Maximal degree in co-relation 101597. Up to 15635 conditions per place. [2023-11-29 00:52:29,305 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 282 selfloop transitions, 90 changer transitions 0/392 dead transitions. [2023-11-29 00:52:29,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 392 transitions, 7577 flow [2023-11-29 00:52:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:52:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:52:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 643 transitions. [2023-11-29 00:52:29,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6782700421940928 [2023-11-29 00:52:29,307 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 643 transitions. [2023-11-29 00:52:29,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 643 transitions. [2023-11-29 00:52:29,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:29,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 643 transitions. [2023-11-29 00:52:29,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.583333333333336) internal successors, (643), 12 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:29,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:29,309 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:29,309 INFO L175 Difference]: Start difference. First operand has 429 places, 335 transitions, 6616 flow. Second operand 12 states and 643 transitions. [2023-11-29 00:52:29,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 392 transitions, 7577 flow [2023-11-29 00:52:30,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 392 transitions, 7346 flow, removed 26 selfloop flow, removed 9 redundant places. [2023-11-29 00:52:30,526 INFO L231 Difference]: Finished difference. Result has 434 places, 332 transitions, 6499 flow [2023-11-29 00:52:30,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6279, PETRI_DIFFERENCE_MINUEND_PLACES=420, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=6499, PETRI_PLACES=434, PETRI_TRANSITIONS=332} [2023-11-29 00:52:30,526 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 359 predicate places. [2023-11-29 00:52:30,526 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 332 transitions, 6499 flow [2023-11-29 00:52:30,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:30,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:30,527 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:30,529 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (58)] Ended with exit code 0 [2023-11-29 00:52:30,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:52:30,727 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:52:30,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:30,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1590351438, now seen corresponding path program 28 times [2023-11-29 00:52:30,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:52:30,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1442161012] [2023-11-29 00:52:30,728 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:52:30,728 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 [2023-11-29 00:52:30,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:52:30,729 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:52:30,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2023-11-29 00:52:31,035 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:52:31,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:31,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:52:31,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:31,385 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:52:31,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:52:31,434 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:52:31,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:31,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:52:31,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1442161012] [2023-11-29 00:52:31,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1442161012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:31,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:31,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:52:31,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554426526] [2023-11-29 00:52:31,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:31,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:52:31,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:52:31,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:52:31,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:52:33,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:52:33,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 332 transitions, 6499 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:33,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:33,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:52:33,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:43,850 INFO L124 PetriNetUnfolderBase]: 14368/28308 cut-off events. [2023-11-29 00:52:43,850 INFO L125 PetriNetUnfolderBase]: For 148908/149000 co-relation queries the response was YES. [2023-11-29 00:52:44,484 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103964 conditions, 28308 events. 14368/28308 cut-off events. For 148908/149000 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 238566 event pairs, 9347 based on Foata normal form. 8/28252 useless extension candidates. Maximal degree in co-relation 103775. Up to 15776 conditions per place. [2023-11-29 00:52:44,565 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 240 selfloop transitions, 161 changer transitions 0/421 dead transitions. [2023-11-29 00:52:44,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 421 transitions, 8180 flow [2023-11-29 00:52:44,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:52:44,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:52:44,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 689 transitions. [2023-11-29 00:52:44,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6708860759493671 [2023-11-29 00:52:44,567 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 689 transitions. [2023-11-29 00:52:44,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 689 transitions. [2023-11-29 00:52:44,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:52:44,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 689 transitions. [2023-11-29 00:52:44,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 53.0) internal successors, (689), 13 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:44,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:52:44,569 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:52:44,569 INFO L175 Difference]: Start difference. First operand has 434 places, 332 transitions, 6499 flow. Second operand 13 states and 689 transitions. [2023-11-29 00:52:44,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 421 transitions, 8180 flow [2023-11-29 00:52:45,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 421 transitions, 7986 flow, removed 3 selfloop flow, removed 8 redundant places. [2023-11-29 00:52:45,964 INFO L231 Difference]: Finished difference. Result has 444 places, 352 transitions, 7289 flow [2023-11-29 00:52:45,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=6327, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7289, PETRI_PLACES=444, PETRI_TRANSITIONS=352} [2023-11-29 00:52:45,964 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 369 predicate places. [2023-11-29 00:52:45,964 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 352 transitions, 7289 flow [2023-11-29 00:52:45,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:45,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:52:45,964 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:52:45,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2023-11-29 00:52:46,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:52:46,165 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:52:46,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:52:46,165 INFO L85 PathProgramCache]: Analyzing trace with hash -2093666214, now seen corresponding path program 29 times [2023-11-29 00:52:46,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:52:46,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [723211205] [2023-11-29 00:52:46,166 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 00:52:46,166 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 [2023-11-29 00:52:46,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:52:46,167 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:52:46,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2023-11-29 00:52:46,609 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-11-29 00:52:46,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:52:46,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:52:46,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:52:46,920 INFO L349 Elim1Store]: treesize reduction 29, result has 12.1 percent of original size [2023-11-29 00:52:46,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 98 treesize of output 38 [2023-11-29 00:52:46,976 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:52:46,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:52:46,977 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:52:46,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [723211205] [2023-11-29 00:52:46,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [723211205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:52:46,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:52:46,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:52:46,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710662901] [2023-11-29 00:52:46,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:52:46,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:52:46,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:52:46,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:52:46,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:52:50,352 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.94s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:52:51,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:52:51,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 352 transitions, 7289 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:52:51,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:52:51,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:52:51,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:52:54,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.73s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:52:56,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:53:06,161 INFO L124 PetriNetUnfolderBase]: 15494/29836 cut-off events. [2023-11-29 00:53:06,162 INFO L125 PetriNetUnfolderBase]: For 171221/171265 co-relation queries the response was YES. [2023-11-29 00:53:06,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110291 conditions, 29836 events. 15494/29836 cut-off events. For 171221/171265 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 245282 event pairs, 11717 based on Foata normal form. 10/29788 useless extension candidates. Maximal degree in co-relation 110096. Up to 16637 conditions per place. [2023-11-29 00:53:06,997 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 273 selfloop transitions, 145 changer transitions 0/437 dead transitions. [2023-11-29 00:53:06,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 437 transitions, 8835 flow [2023-11-29 00:53:06,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-29 00:53:06,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-29 00:53:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 685 transitions. [2023-11-29 00:53:06,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6669912366114897 [2023-11-29 00:53:06,999 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 685 transitions. [2023-11-29 00:53:06,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 685 transitions. [2023-11-29 00:53:06,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:06,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 685 transitions. [2023-11-29 00:53:07,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 52.69230769230769) internal successors, (685), 13 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:07,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:53:07,001 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 79.0) internal successors, (1106), 14 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) [2023-11-29 00:53:07,001 INFO L175 Difference]: Start difference. First operand has 444 places, 352 transitions, 7289 flow. Second operand 13 states and 685 transitions. [2023-11-29 00:53:07,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 437 transitions, 8835 flow [2023-11-29 00:53:08,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 437 transitions, 8658 flow, removed 47 selfloop flow, removed 5 redundant places. [2023-11-29 00:53:08,561 INFO L231 Difference]: Finished difference. Result has 457 places, 364 transitions, 7856 flow [2023-11-29 00:53:08,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=7113, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=352, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7856, PETRI_PLACES=457, PETRI_TRANSITIONS=364} [2023-11-29 00:53:08,561 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 382 predicate places. [2023-11-29 00:53:08,561 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 364 transitions, 7856 flow [2023-11-29 00:53:08,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:08,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:08,562 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:08,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2023-11-29 00:53:08,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:53:08,762 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:53:08,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash 679993320, now seen corresponding path program 30 times [2023-11-29 00:53:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:53:08,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144819684] [2023-11-29 00:53:08,763 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-29 00:53:08,763 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 [2023-11-29 00:53:08,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:53:08,764 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:53:08,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2023-11-29 00:53:08,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-29 00:53:08,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:53:08,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:53:08,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:09,279 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:09,279 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:53:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:53:09,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:53:09,391 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:53:09,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144819684] [2023-11-29 00:53:09,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144819684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:09,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:09,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:53:09,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892559210] [2023-11-29 00:53:09,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:09,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:53:09,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:53:09,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:53:09,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:53:11,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:53:12,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:53:12,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 364 transitions, 7856 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:12,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:12,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:53:12,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:23,010 INFO L124 PetriNetUnfolderBase]: 14380/28358 cut-off events. [2023-11-29 00:53:23,010 INFO L125 PetriNetUnfolderBase]: For 155533/155625 co-relation queries the response was YES. [2023-11-29 00:53:23,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105260 conditions, 28358 events. 14380/28358 cut-off events. For 155533/155625 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 239272 event pairs, 9346 based on Foata normal form. 8/28306 useless extension candidates. Maximal degree in co-relation 105059. Up to 15776 conditions per place. [2023-11-29 00:53:23,993 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 244 selfloop transitions, 163 changer transitions 0/427 dead transitions. [2023-11-29 00:53:23,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 427 transitions, 8984 flow [2023-11-29 00:53:23,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:53:23,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:53:23,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 637 transitions. [2023-11-29 00:53:23,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6719409282700421 [2023-11-29 00:53:23,995 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 637 transitions. [2023-11-29 00:53:23,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 637 transitions. [2023-11-29 00:53:23,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:23,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 637 transitions. [2023-11-29 00:53:23,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.083333333333336) internal successors, (637), 12 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:23,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:23,997 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:23,997 INFO L175 Difference]: Start difference. First operand has 457 places, 364 transitions, 7856 flow. Second operand 12 states and 637 transitions. [2023-11-29 00:53:23,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 427 transitions, 8984 flow [2023-11-29 00:53:25,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 427 transitions, 8672 flow, removed 77 selfloop flow, removed 6 redundant places. [2023-11-29 00:53:25,480 INFO L231 Difference]: Finished difference. Result has 466 places, 366 transitions, 7943 flow [2023-11-29 00:53:25,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=7544, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7943, PETRI_PLACES=466, PETRI_TRANSITIONS=366} [2023-11-29 00:53:25,481 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 391 predicate places. [2023-11-29 00:53:25,481 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 366 transitions, 7943 flow [2023-11-29 00:53:25,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:25,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:25,481 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:25,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (61)] Ended with exit code 0 [2023-11-29 00:53:25,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:53:25,681 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:53:25,682 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:25,682 INFO L85 PathProgramCache]: Analyzing trace with hash -1442341378, now seen corresponding path program 31 times [2023-11-29 00:53:25,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:53:25,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193489146] [2023-11-29 00:53:25,682 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-29 00:53:25,682 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 [2023-11-29 00:53:25,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:53:25,683 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:53:25,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2023-11-29 00:53:25,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:53:25,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:53:25,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:26,271 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:26,272 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:53:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:53:26,386 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:53:26,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:53:26,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193489146] [2023-11-29 00:53:26,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193489146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:26,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:26,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:53:26,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691421069] [2023-11-29 00:53:26,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:26,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:53:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:53:26,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:53:26,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:53:30,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.95s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:53:30,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:53:30,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 366 transitions, 7943 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:30,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:30,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:53:30,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:34,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:53:45,674 INFO L124 PetriNetUnfolderBase]: 15594/29832 cut-off events. [2023-11-29 00:53:45,674 INFO L125 PetriNetUnfolderBase]: For 173164/173206 co-relation queries the response was YES. [2023-11-29 00:53:46,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111347 conditions, 29832 events. 15594/29832 cut-off events. For 173164/173206 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 244258 event pairs, 11755 based on Foata normal form. 11/29816 useless extension candidates. Maximal degree in co-relation 111142. Up to 16846 conditions per place. [2023-11-29 00:53:46,543 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 253 selfloop transitions, 160 changer transitions 0/432 dead transitions. [2023-11-29 00:53:46,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 432 transitions, 8994 flow [2023-11-29 00:53:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:53:46,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:53:46,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 633 transitions. [2023-11-29 00:53:46,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6677215189873418 [2023-11-29 00:53:46,545 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 633 transitions. [2023-11-29 00:53:46,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 633 transitions. [2023-11-29 00:53:46,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:53:46,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 633 transitions. [2023-11-29 00:53:46,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.75) internal successors, (633), 12 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:46,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:46,546 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:46,546 INFO L175 Difference]: Start difference. First operand has 466 places, 366 transitions, 7943 flow. Second operand 12 states and 633 transitions. [2023-11-29 00:53:46,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 432 transitions, 8994 flow [2023-11-29 00:53:47,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 432 transitions, 8685 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 00:53:48,006 INFO L231 Difference]: Finished difference. Result has 473 places, 365 transitions, 7929 flow [2023-11-29 00:53:48,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=7542, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7929, PETRI_PLACES=473, PETRI_TRANSITIONS=365} [2023-11-29 00:53:48,007 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 398 predicate places. [2023-11-29 00:53:48,007 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 365 transitions, 7929 flow [2023-11-29 00:53:48,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:48,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:53:48,007 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:53:48,013 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (62)] Ended with exit code 0 [2023-11-29 00:53:48,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:53:48,208 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:53:48,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:53:48,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2126534822, now seen corresponding path program 32 times [2023-11-29 00:53:48,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:53:48,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055065750] [2023-11-29 00:53:48,209 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 00:53:48,209 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 [2023-11-29 00:53:48,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:53:48,209 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:53:48,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2023-11-29 00:53:48,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 00:53:48,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:53:48,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:53:48,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:53:48,730 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:53:48,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:53:48,847 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:53:48,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:53:48,847 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:53:48,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055065750] [2023-11-29 00:53:48,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055065750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:53:48,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:53:48,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:53:48,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340781899] [2023-11-29 00:53:48,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:53:48,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:53:48,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:53:48,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:53:48,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:53:52,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:53:53,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:53:53,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 365 transitions, 7929 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:53:53,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:53:53,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:53:53,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:53:56,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:54:07,502 INFO L124 PetriNetUnfolderBase]: 15566/29978 cut-off events. [2023-11-29 00:54:07,502 INFO L125 PetriNetUnfolderBase]: For 170028/170072 co-relation queries the response was YES. [2023-11-29 00:54:08,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111562 conditions, 29978 events. 15566/29978 cut-off events. For 170028/170072 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 246727 event pairs, 11749 based on Foata normal form. 10/29930 useless extension candidates. Maximal degree in co-relation 111354. Up to 16637 conditions per place. [2023-11-29 00:54:08,629 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 269 selfloop transitions, 154 changer transitions 0/442 dead transitions. [2023-11-29 00:54:08,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 442 transitions, 9324 flow [2023-11-29 00:54:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:54:08,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:54:08,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 632 transitions. [2023-11-29 00:54:08,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2023-11-29 00:54:08,631 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 632 transitions. [2023-11-29 00:54:08,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 632 transitions. [2023-11-29 00:54:08,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:08,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 632 transitions. [2023-11-29 00:54:08,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 52.666666666666664) internal successors, (632), 12 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:08,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:08,633 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:08,633 INFO L175 Difference]: Start difference. First operand has 473 places, 365 transitions, 7929 flow. Second operand 12 states and 632 transitions. [2023-11-29 00:54:08,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 442 transitions, 9324 flow [2023-11-29 00:54:10,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 442 transitions, 8991 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-11-29 00:54:10,313 INFO L231 Difference]: Finished difference. Result has 480 places, 377 transitions, 8259 flow [2023-11-29 00:54:10,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=7610, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8259, PETRI_PLACES=480, PETRI_TRANSITIONS=377} [2023-11-29 00:54:10,313 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 405 predicate places. [2023-11-29 00:54:10,313 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 377 transitions, 8259 flow [2023-11-29 00:54:10,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:10,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:10,314 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:10,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (63)] Ended with exit code 0 [2023-11-29 00:54:10,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:54:10,514 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:54:10,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:10,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1005588744, now seen corresponding path program 33 times [2023-11-29 00:54:10,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:54:10,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856054874] [2023-11-29 00:54:10,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 00:54:10,515 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 [2023-11-29 00:54:10,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:54:10,516 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:54:10,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2023-11-29 00:54:10,749 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-29 00:54:10,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:54:10,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 00:54:10,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:11,075 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:54:11,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:54:11,195 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:54:11,195 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:54:11,195 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:54:11,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856054874] [2023-11-29 00:54:11,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856054874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:11,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:11,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:54:11,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086895412] [2023-11-29 00:54:11,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:11,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:54:11,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:54:11,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:54:11,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:54:13,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 79 [2023-11-29 00:54:13,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 377 transitions, 8259 flow. Second operand has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:13,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:13,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 79 [2023-11-29 00:54:13,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:24,093 INFO L124 PetriNetUnfolderBase]: 14434/28434 cut-off events. [2023-11-29 00:54:24,094 INFO L125 PetriNetUnfolderBase]: For 154160/154250 co-relation queries the response was YES. [2023-11-29 00:54:25,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106066 conditions, 28434 events. 14434/28434 cut-off events. For 154160/154250 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 239158 event pairs, 9428 based on Foata normal form. 8/28365 useless extension candidates. Maximal degree in co-relation 105854. Up to 15776 conditions per place. [2023-11-29 00:54:25,097 INFO L140 encePairwiseOnDemand]: 65/79 looper letters, 266 selfloop transitions, 152 changer transitions 0/438 dead transitions. [2023-11-29 00:54:25,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 438 transitions, 9391 flow [2023-11-29 00:54:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:54:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:54:25,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 639 transitions. [2023-11-29 00:54:25,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6740506329113924 [2023-11-29 00:54:25,099 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 639 transitions. [2023-11-29 00:54:25,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 639 transitions. [2023-11-29 00:54:25,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:54:25,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 639 transitions. [2023-11-29 00:54:25,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 53.25) internal successors, (639), 12 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:25,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:25,101 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 79.0) internal successors, (1027), 13 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:25,101 INFO L175 Difference]: Start difference. First operand has 480 places, 377 transitions, 8259 flow. Second operand 12 states and 639 transitions. [2023-11-29 00:54:25,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 438 transitions, 9391 flow [2023-11-29 00:54:26,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 438 transitions, 9117 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-11-29 00:54:26,763 INFO L231 Difference]: Finished difference. Result has 488 places, 379 transitions, 8375 flow [2023-11-29 00:54:26,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=79, PETRI_DIFFERENCE_MINUEND_FLOW=7986, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=8375, PETRI_PLACES=488, PETRI_TRANSITIONS=379} [2023-11-29 00:54:26,764 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 413 predicate places. [2023-11-29 00:54:26,764 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 379 transitions, 8375 flow [2023-11-29 00:54:26,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 45.333333333333336) internal successors, (544), 12 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:26,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:54:26,764 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:54:26,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2023-11-29 00:54:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 00:54:26,964 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 45 more)] === [2023-11-29 00:54:26,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:54:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash 213360454, now seen corresponding path program 34 times [2023-11-29 00:54:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 00:54:26,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969313939] [2023-11-29 00:54:26,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 00:54:26,965 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 [2023-11-29 00:54:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 00:54:26,966 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -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) [2023-11-29 00:54:26,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_63afe8f3-5700-47e9-924b-afc9c41e5667/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2023-11-29 00:54:27,386 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 00:54:27,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 00:54:27,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 00:54:27,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 00:54:27,695 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 00:54:27,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 101 treesize of output 69 [2023-11-29 00:54:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-29 00:54:27,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 00:54:27,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 00:54:27,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969313939] [2023-11-29 00:54:27,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969313939] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:54:27,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:54:27,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-29 00:54:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958667877] [2023-11-29 00:54:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:54:27,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 00:54:27,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 00:54:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 00:54:27,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-29 00:54:32,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.41s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2023-11-29 00:54:32,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 79 [2023-11-29 00:54:32,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 379 transitions, 8375 flow. Second operand has 12 states, 12 states have (on average 44.333333333333336) internal successors, (532), 12 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:54:32,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:54:32,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 79 [2023-11-29 00:54:32,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:54:35,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]