./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/unroll-5.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:01,274 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:01,394 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:21:01,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:01,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:01,442 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:01,444 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:01,444 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:01,445 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:01,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:01,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:01,452 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:01,452 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:01,454 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:01,455 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:01,455 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:01,455 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:01,456 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:01,456 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:21:01,457 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:21:01,457 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:21:01,458 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:01,458 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:21:01,460 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:21:01,461 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:01,461 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:01,462 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:01,463 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:01,463 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:01,463 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:01,465 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:01,465 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:01,465 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:21:01,466 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:21:01,466 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:01,466 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:01,466 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:01,467 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:01,467 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_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2023-11-06 22:21:01,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:01,802 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:01,805 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:01,806 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:01,807 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:01,808 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2023-11-06 22:21:05,046 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:05,331 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:05,333 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/sv-benchmarks/c/weaver/unroll-5.wvr.c [2023-11-06 22:21:05,351 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data/61e642adc/52c99ed311b246638ee281147c3f6a59/FLAGedcc02bda [2023-11-06 22:21:05,377 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data/61e642adc/52c99ed311b246638ee281147c3f6a59 [2023-11-06 22:21:05,385 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:05,389 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:05,394 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:05,394 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:05,401 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:05,401 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:05" (1/1) ... [2023-11-06 22:21:05,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47dcf93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:05, skipping insertion in model container [2023-11-06 22:21:05,404 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:05" (1/1) ... [2023-11-06 22:21:05,443 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:05,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:05,741 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) [2023-11-06 22:21:05,745 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@26e186e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:05, skipping insertion in model container [2023-11-06 22:21:05,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:05,746 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:21:05,749 INFO L158 Benchmark]: Toolchain (without parser) took 358.17ms. Allocated memory is still 125.8MB. Free memory was 90.1MB in the beginning and 80.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:21:05,750 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:21:05,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.98ms. Allocated memory is still 125.8MB. Free memory was 90.1MB in the beginning and 80.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 22:21:05,753 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 125.8MB. Free memory is still 73.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.98ms. Allocated memory is still 125.8MB. Free memory was 90.1MB in the beginning and 80.3MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: 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_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/unroll-5.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:21:08,352 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:21:08,520 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:21:08,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:21:08,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:21:08,585 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:21:08,586 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:21:08,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:21:08,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:21:08,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:21:08,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:21:08,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:21:08,597 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:21:08,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:21:08,600 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:21:08,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:21:08,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:21:08,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:21:08,602 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:21:08,603 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:21:08,604 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:21:08,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:21:08,605 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:21:08,605 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:21:08,606 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:21:08,607 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:21:08,607 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:21:08,608 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:21:08,609 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:21:08,609 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:21:08,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:21:08,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:08,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:21:08,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:21:08,613 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:21:08,613 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:21:08,614 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:21:08,614 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:21:08,614 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:21:08,616 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:21:08,616 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:21:08,616 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_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8ce32899aa465c1eaa89b234122d94aaf792bb347295ccb743670e04bba6b8e [2023-11-06 22:21:09,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:21:09,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:21:09,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:21:09,128 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:21:09,129 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:21:09,132 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/unroll-5.wvr.c [2023-11-06 22:21:12,285 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:21:12,610 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:21:12,611 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/sv-benchmarks/c/weaver/unroll-5.wvr.c [2023-11-06 22:21:12,619 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data/7c78c5877/902f8b6997324729beff4c82ca19d539/FLAG2dd7f9554 [2023-11-06 22:21:12,635 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/data/7c78c5877/902f8b6997324729beff4c82ca19d539 [2023-11-06 22:21:12,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:21:12,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:21:12,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:12,641 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:21:12,650 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:21:12,652 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32d5ebd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:12, skipping insertion in model container [2023-11-06 22:21:12,653 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:21:12" (1/1) ... [2023-11-06 22:21:12,683 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:12,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:12,948 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:21:12,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:21:13,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:13,030 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:21:13,093 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:21:13,124 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:21:13,125 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13 WrapperNode [2023-11-06 22:21:13,126 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:21:13,127 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:13,127 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:21:13,128 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:21:13,137 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,169 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,224 INFO L138 Inliner]: procedures = 26, calls = 39, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 167 [2023-11-06 22:21:13,225 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:21:13,226 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:21:13,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:21:13,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:21:13,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,269 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,269 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,299 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,302 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,317 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,321 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:21:13,322 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:21:13,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:21:13,323 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:21:13,324 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (1/1) ... [2023-11-06 22:21:13,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:21:13,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:21:13,381 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:21:13,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:21:13,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:21:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:21:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:21:13,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:21:13,439 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:21:13,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:21:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:21:13,440 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:21:13,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:21:13,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:21:13,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:21:13,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:21:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:21:13,446 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:21:13,693 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:21:13,695 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:21:14,376 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:21:14,388 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:21:14,388 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:21:14,391 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:14 BoogieIcfgContainer [2023-11-06 22:21:14,391 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:21:14,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:21:14,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:21:14,397 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:21:14,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:21:12" (1/3) ... [2023-11-06 22:21:14,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a639e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:14, skipping insertion in model container [2023-11-06 22:21:14,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:21:13" (2/3) ... [2023-11-06 22:21:14,399 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78a639e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:21:14, skipping insertion in model container [2023-11-06 22:21:14,399 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:21:14" (3/3) ... [2023-11-06 22:21:14,400 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-5.wvr.c [2023-11-06 22:21:14,420 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:21:14,421 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2023-11-06 22:21:14,421 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:21:14,553 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:21:14,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 230 places, 240 transitions, 494 flow [2023-11-06 22:21:14,750 INFO L124 PetriNetUnfolderBase]: 17/238 cut-off events. [2023-11-06 22:21:14,750 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:21:14,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 238 events. 17/238 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 296 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-11-06 22:21:14,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 230 places, 240 transitions, 494 flow [2023-11-06 22:21:14,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 233 transitions, 478 flow [2023-11-06 22:21:14,777 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:21:14,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 233 transitions, 478 flow [2023-11-06 22:21:14,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 233 transitions, 478 flow [2023-11-06 22:21:14,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 233 transitions, 478 flow [2023-11-06 22:21:14,846 INFO L124 PetriNetUnfolderBase]: 17/233 cut-off events. [2023-11-06 22:21:14,846 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:21:14,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 233 events. 17/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 123. Up to 2 conditions per place. [2023-11-06 22:21:14,853 INFO L119 LiptonReduction]: Number of co-enabled transitions 6076 [2023-11-06 22:22:03,864 INFO L134 LiptonReduction]: Checked pairs total: 6336 [2023-11-06 22:22:03,865 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-11-06 22:22:03,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:22:03,892 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;@278f6cd2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:22:03,893 INFO L358 AbstractCegarLoop]: Starting to check reachability of 38 error locations. [2023-11-06 22:22:03,896 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:22:03,896 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:22:03,897 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:22:03,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:03,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:22:03,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:03,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:03,906 INFO L85 PathProgramCache]: Analyzing trace with hash 31355, now seen corresponding path program 1 times [2023-11-06 22:22:03,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:03,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [596454722] [2023-11-06 22:22:03,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:03,924 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 [2023-11-06 22:22:03,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:03,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:03,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:04,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:22:04,076 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:04,213 INFO L351 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 7 [2023-11-06 22:22:04,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:04,261 INFO L351 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 [2023-11-06 22:22:04,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:04,289 INFO L351 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 [2023-11-06 22:22:04,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:04,297 INFO L351 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 [2023-11-06 22:22:04,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:04,311 INFO L351 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 [2023-11-06 22:22:04,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:04,319 INFO L351 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 [2023-11-06 22:22:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:04,329 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:04,329 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:04,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [596454722] [2023-11-06 22:22:04,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [596454722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:04,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:04,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:04,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141023984] [2023-11-06 22:22:04,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:04,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:04,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:04,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:04,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 531 [2023-11-06 22:22:04,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:04,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:04,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 531 [2023-11-06 22:22:04,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:05,368 INFO L124 PetriNetUnfolderBase]: 597/840 cut-off events. [2023-11-06 22:22:05,368 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 22:22:05,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1700 conditions, 840 events. 597/840 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3606 event pairs, 286 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 1466. Up to 832 conditions per place. [2023-11-06 22:22:05,381 INFO L140 encePairwiseOnDemand]: 521/531 looper letters, 28 selfloop transitions, 4 changer transitions 0/34 dead transitions. [2023-11-06 22:22:05,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 144 flow [2023-11-06 22:22:05,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:05,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 680 transitions. [2023-11-06 22:22:05,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4268675455116133 [2023-11-06 22:22:05,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 680 transitions. [2023-11-06 22:22:05,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 680 transitions. [2023-11-06 22:22:05,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:05,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 680 transitions. [2023-11-06 22:22:05,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 226.66666666666666) internal successors, (680), 3 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,440 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 92 flow. Second operand 3 states and 680 transitions. [2023-11-06 22:22:05,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 144 flow [2023-11-06 22:22:05,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 136 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:22:05,448 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 80 flow [2023-11-06 22:22:05,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-11-06 22:22:05,456 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2023-11-06 22:22:05,456 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 80 flow [2023-11-06 22:22:05,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,457 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:05,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:22:05,479 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:05,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:05,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:05,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:05,674 INFO L85 PathProgramCache]: Analyzing trace with hash 31480, now seen corresponding path program 1 times [2023-11-06 22:22:05,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:05,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266994188] [2023-11-06 22:22:05,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:05,675 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 [2023-11-06 22:22:05,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:05,679 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:05,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:05,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:05,783 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:22:05,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:05,809 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:05,809 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:05,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266994188] [2023-11-06 22:22:05,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266994188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:05,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:05,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:05,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713565364] [2023-11-06 22:22:05,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:05,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:05,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 531 [2023-11-06 22:22:05,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:05,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:05,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 531 [2023-11-06 22:22:05,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:06,534 INFO L124 PetriNetUnfolderBase]: 597/842 cut-off events. [2023-11-06 22:22:06,535 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:06,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 842 events. 597/842 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3615 event pairs, 286 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 1668. Up to 835 conditions per place. [2023-11-06 22:22:06,544 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 32 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-11-06 22:22:06,544 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 36 transitions, 152 flow [2023-11-06 22:22:06,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:06,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:06,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2023-11-06 22:22:06,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42812303829252984 [2023-11-06 22:22:06,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2023-11-06 22:22:06,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2023-11-06 22:22:06,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:06,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2023-11-06 22:22:06,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 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) [2023-11-06 22:22:06,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:06,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:06,562 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 682 transitions. [2023-11-06 22:22:06,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 36 transitions, 152 flow [2023-11-06 22:22:06,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 144 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:06,565 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 88 flow [2023-11-06 22:22:06,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=35} [2023-11-06 22:22:06,567 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2023-11-06 22:22:06,567 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 88 flow [2023-11-06 22:22:06,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:06,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:06,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:22:06,583 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:06,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:06,783 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:06,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:06,784 INFO L85 PathProgramCache]: Analyzing trace with hash 31354, now seen corresponding path program 1 times [2023-11-06 22:22:06,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:06,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [687995163] [2023-11-06 22:22:06,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:06,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:06,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:06,793 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:06,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:06,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:06,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:22:06,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:06,909 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:22:06,937 INFO L351 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 13 treesize of output 7 [2023-11-06 22:22:06,969 INFO L351 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 13 treesize of output 7 [2023-11-06 22:22:07,000 INFO L351 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 18 treesize of output 7 [2023-11-06 22:22:07,029 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:22:07,054 INFO L351 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 13 treesize of output 7 [2023-11-06 22:22:07,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:07,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:07,108 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:07,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [687995163] [2023-11-06 22:22:07,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [687995163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:07,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:07,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:07,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033761807] [2023-11-06 22:22:07,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:07,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:07,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:07,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:07,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:07,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 531 [2023-11-06 22:22:07,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:07,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:07,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 531 [2023-11-06 22:22:07,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:08,359 INFO L124 PetriNetUnfolderBase]: 597/841 cut-off events. [2023-11-06 22:22:08,360 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:08,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 841 events. 597/841 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3598 event pairs, 286 based on Foata normal form. 1/186 useless extension candidates. Maximal degree in co-relation 1682. Up to 835 conditions per place. [2023-11-06 22:22:08,371 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 31 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-11-06 22:22:08,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 154 flow [2023-11-06 22:22:08,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:08,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 676 transitions. [2023-11-06 22:22:08,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243565599497803 [2023-11-06 22:22:08,376 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 676 transitions. [2023-11-06 22:22:08,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 676 transitions. [2023-11-06 22:22:08,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:08,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 676 transitions. [2023-11-06 22:22:08,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 225.33333333333334) internal successors, (676), 3 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,389 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 88 flow. Second operand 3 states and 676 transitions. [2023-11-06 22:22:08,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 154 flow [2023-11-06 22:22:08,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 35 transitions, 150 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:08,392 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 92 flow [2023-11-06 22:22:08,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-06 22:22:08,395 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2023-11-06 22:22:08,395 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 92 flow [2023-11-06 22:22:08,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:08,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:08,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:22:08,417 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:08,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:08,618 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:08,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:08,619 INFO L85 PathProgramCache]: Analyzing trace with hash 975926, now seen corresponding path program 1 times [2023-11-06 22:22:08,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:08,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419089487] [2023-11-06 22:22:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:08,622 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:08,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:08,623 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:08,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:08,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:08,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:22:08,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:08,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:08,774 INFO L351 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 13 [2023-11-06 22:22:08,787 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:22:08,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:08,855 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:22:08,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-06 22:22:08,869 INFO L351 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 [2023-11-06 22:22:09,068 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:09,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:09,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:09,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:09,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419089487] [2023-11-06 22:22:09,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419089487] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:09,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:09,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:22:09,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393176591] [2023-11-06 22:22:09,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:09,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:09,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:09,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:09,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:10,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 531 [2023-11-06 22:22:10,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 92 flow. Second operand has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:10,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:10,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 531 [2023-11-06 22:22:10,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:12,029 INFO L124 PetriNetUnfolderBase]: 603/853 cut-off events. [2023-11-06 22:22:12,029 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:12,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1732 conditions, 853 events. 603/853 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3635 event pairs, 286 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 1719. Up to 837 conditions per place. [2023-11-06 22:22:12,038 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 34 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-11-06 22:22:12,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 230 flow [2023-11-06 22:22:12,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:12,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1266 transitions. [2023-11-06 22:22:12,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3973634651600753 [2023-11-06 22:22:12,046 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1266 transitions. [2023-11-06 22:22:12,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1266 transitions. [2023-11-06 22:22:12,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:12,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1266 transitions. [2023-11-06 22:22:12,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.0) internal successors, (1266), 6 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:12,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:12,067 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:12,068 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 92 flow. Second operand 6 states and 1266 transitions. [2023-11-06 22:22:12,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 230 flow [2023-11-06 22:22:12,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 47 transitions, 226 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:12,071 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 182 flow [2023-11-06 22:22:12,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-06 22:22:12,072 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-11-06 22:22:12,073 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 182 flow [2023-11-06 22:22:12,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.0) internal successors, (1224), 6 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:12,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:12,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:22:12,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:12,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:12,289 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:12,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:12,289 INFO L85 PathProgramCache]: Analyzing trace with hash 975800, now seen corresponding path program 1 times [2023-11-06 22:22:12,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:12,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600155835] [2023-11-06 22:22:12,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:12,290 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 [2023-11-06 22:22:12,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:12,292 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:12,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:12,361 INFO L262 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:22:12,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:12,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:22:12,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:12,410 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:12,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:12,446 INFO L351 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 18 treesize of output 1 [2023-11-06 22:22:12,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:12,462 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:12,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:12,484 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:12,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:12,500 INFO L351 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 8 treesize of output 1 [2023-11-06 22:22:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:12,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:12,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:12,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:12,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [600155835] [2023-11-06 22:22:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [600155835] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:12,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:22:12,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795790474] [2023-11-06 22:22:12,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:12,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:22:12,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:12,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:22:12,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:22:14,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 531 [2023-11-06 22:22:14,202 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:14,202 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:14,202 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 531 [2023-11-06 22:22:14,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:15,628 INFO L124 PetriNetUnfolderBase]: 602/850 cut-off events. [2023-11-06 22:22:15,628 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:22:15,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1754 conditions, 850 events. 602/850 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 3648 event pairs, 286 based on Foata normal form. 3/197 useless extension candidates. Maximal degree in co-relation 1732. Up to 841 conditions per place. [2023-11-06 22:22:15,637 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 31 selfloop transitions, 11 changer transitions 0/44 dead transitions. [2023-11-06 22:22:15,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 268 flow [2023-11-06 22:22:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:15,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1293 transitions. [2023-11-06 22:22:15,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4058380414312618 [2023-11-06 22:22:15,654 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1293 transitions. [2023-11-06 22:22:15,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1293 transitions. [2023-11-06 22:22:15,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:15,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1293 transitions. [2023-11-06 22:22:15,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.5) internal successors, (1293), 6 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,673 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 182 flow. Second operand 6 states and 1293 transitions. [2023-11-06 22:22:15,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 268 flow [2023-11-06 22:22:15,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 244 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-06 22:22:15,680 INFO L231 Difference]: Finished difference. Result has 49 places, 44 transitions, 188 flow [2023-11-06 22:22:15,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=49, PETRI_TRANSITIONS=44} [2023-11-06 22:22:15,686 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-11-06 22:22:15,689 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 44 transitions, 188 flow [2023-11-06 22:22:15,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.0) internal successors, (1254), 6 states have internal predecessors, (1254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:15,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:15,690 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-06 22:22:15,701 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:15,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:15,896 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:15,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:15,896 INFO L85 PathProgramCache]: Analyzing trace with hash 30253751, now seen corresponding path program 1 times [2023-11-06 22:22:15,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:15,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502567087] [2023-11-06 22:22:15,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:15,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:15,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:15,899 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:15,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:16,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:16,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:22:16,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:16,098 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:22:16,099 INFO L351 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 24 treesize of output 22 [2023-11-06 22:22:16,137 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:22:16,137 INFO L351 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 19 treesize of output 22 [2023-11-06 22:22:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-06 22:22:16,242 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:16,242 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:16,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502567087] [2023-11-06 22:22:16,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502567087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:16,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:16,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:16,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411059801] [2023-11-06 22:22:16,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:16,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:16,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:16,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:16,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:16,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 531 [2023-11-06 22:22:16,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 44 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 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) [2023-11-06 22:22:16,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:16,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 531 [2023-11-06 22:22:16,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:17,018 INFO L124 PetriNetUnfolderBase]: 453/654 cut-off events. [2023-11-06 22:22:17,019 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-06 22:22:17,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1350 conditions, 654 events. 453/654 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 2746 event pairs, 215 based on Foata normal form. 2/172 useless extension candidates. Maximal degree in co-relation 1307. Up to 648 conditions per place. [2023-11-06 22:22:17,025 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 36 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-06 22:22:17,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 39 transitions, 223 flow [2023-11-06 22:22:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:17,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 665 transitions. [2023-11-06 22:22:17,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4174513496547395 [2023-11-06 22:22:17,031 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 665 transitions. [2023-11-06 22:22:17,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 665 transitions. [2023-11-06 22:22:17,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:17,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 665 transitions. [2023-11-06 22:22:17,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.66666666666666) internal successors, (665), 3 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,041 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:17,041 INFO L175 Difference]: Start difference. First operand has 49 places, 44 transitions, 188 flow. Second operand 3 states and 665 transitions. [2023-11-06 22:22:17,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 39 transitions, 223 flow [2023-11-06 22:22:17,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 191 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-11-06 22:22:17,045 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 119 flow [2023-11-06 22:22:17,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-11-06 22:22:17,046 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-11-06 22:22:17,046 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 119 flow [2023-11-06 22:22:17,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 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) [2023-11-06 22:22:17,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:17,047 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:22:17,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:17,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:17,262 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:17,262 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:17,262 INFO L85 PathProgramCache]: Analyzing trace with hash 937887183, now seen corresponding path program 1 times [2023-11-06 22:22:17,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:17,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427163016] [2023-11-06 22:22:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:17,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:17,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:17,264 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:17,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:17,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:17,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:22:17,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:17,431 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:22:17,432 INFO L351 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 11 treesize of output 17 [2023-11-06 22:22:17,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:17,483 INFO L322 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-06 22:22:17,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 13 [2023-11-06 22:22:17,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:17,545 INFO L322 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-06 22:22:17,546 INFO L351 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 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 22:22:17,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:17,999 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:18,352 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:18,353 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:18,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427163016] [2023-11-06 22:22:18,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427163016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:18,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:18,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:22:18,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47016018] [2023-11-06 22:22:18,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:18,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:22:18,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:18,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:22:18,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:22:20,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 203 out of 531 [2023-11-06 22:22:20,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 119 flow. Second operand has 8 states, 8 states have (on average 204.25) internal successors, (1634), 8 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:20,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:20,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 203 of 531 [2023-11-06 22:22:20,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:21,379 INFO L124 PetriNetUnfolderBase]: 430/617 cut-off events. [2023-11-06 22:22:21,379 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:22:21,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 617 events. 430/617 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 2538 event pairs, 204 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 1245. Up to 609 conditions per place. [2023-11-06 22:22:21,385 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 31 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-11-06 22:22:21,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 185 flow [2023-11-06 22:22:21,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:22:21,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:22:21,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1048 transitions. [2023-11-06 22:22:21,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39472693032015066 [2023-11-06 22:22:21,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1048 transitions. [2023-11-06 22:22:21,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1048 transitions. [2023-11-06 22:22:21,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:21,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1048 transitions. [2023-11-06 22:22:21,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 209.6) internal successors, (1048), 5 states have internal predecessors, (1048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 531.0) internal successors, (3186), 6 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,407 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 531.0) internal successors, (3186), 6 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,407 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 119 flow. Second operand 5 states and 1048 transitions. [2023-11-06 22:22:21,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 185 flow [2023-11-06 22:22:21,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:21,410 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 122 flow [2023-11-06 22:22:21,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=122, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-06 22:22:21,412 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-11-06 22:22:21,412 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 122 flow [2023-11-06 22:22:21,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 204.25) internal successors, (1634), 8 states have internal predecessors, (1634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:21,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:21,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:22:21,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:21,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:21,628 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:21,628 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:21,629 INFO L85 PathProgramCache]: Analyzing trace with hash 937887185, now seen corresponding path program 1 times [2023-11-06 22:22:21,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:21,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337403959] [2023-11-06 22:22:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:21,629 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 [2023-11-06 22:22:21,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:21,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:21,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:21,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:22:21,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:21,761 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:22:21,762 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-06 22:22:21,789 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:22:21,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-06 22:22:21,825 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:22:21,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-06 22:22:21,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:21,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:21,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:21,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337403959] [2023-11-06 22:22:21,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337403959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:21,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:21,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:21,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361214313] [2023-11-06 22:22:21,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:21,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:21,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:21,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:21,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:22,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 531 [2023-11-06 22:22:22,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:22,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:22,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 531 [2023-11-06 22:22:22,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:22,549 INFO L124 PetriNetUnfolderBase]: 407/580 cut-off events. [2023-11-06 22:22:22,549 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:22:22,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1187 conditions, 580 events. 407/580 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 2326 event pairs, 193 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 1174. Up to 574 conditions per place. [2023-11-06 22:22:22,554 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 32 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-06 22:22:22,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 184 flow [2023-11-06 22:22:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2023-11-06 22:22:22,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41494036409290647 [2023-11-06 22:22:22,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2023-11-06 22:22:22,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2023-11-06 22:22:22,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:22,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2023-11-06 22:22:22,563 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:22,567 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:22,568 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:22,569 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 122 flow. Second operand 3 states and 661 transitions. [2023-11-06 22:22:22,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 184 flow [2023-11-06 22:22:22,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:22:22,572 INFO L231 Difference]: Finished difference. Result has 41 places, 35 transitions, 114 flow [2023-11-06 22:22:22,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=41, PETRI_TRANSITIONS=35} [2023-11-06 22:22:22,573 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-11-06 22:22:22,573 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 35 transitions, 114 flow [2023-11-06 22:22:22,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:22,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:22,574 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:22:22,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:22,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:22,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:22,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:22,788 INFO L85 PathProgramCache]: Analyzing trace with hash -990913928, now seen corresponding path program 2 times [2023-11-06 22:22:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:22,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670040001] [2023-11-06 22:22:22,789 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:22:22,789 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 [2023-11-06 22:22:22,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:22,790 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:22,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:22,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:22:22,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:22,879 INFO L262 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 22:22:22,881 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:22,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:22,906 INFO L351 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 13 [2023-11-06 22:22:22,917 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:22:22,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:22,997 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:22:22,997 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-06 22:22:23,014 INFO L351 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 [2023-11-06 22:22:23,554 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:22:23,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:23,555 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:23,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670040001] [2023-11-06 22:22:23,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670040001] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:23,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:23,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:22:23,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115569248] [2023-11-06 22:22:23,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:23,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:22:23,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:23,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:22:23,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:22:24,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 531 [2023-11-06 22:22:24,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:24,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:24,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 531 [2023-11-06 22:22:24,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:24,424 INFO L124 PetriNetUnfolderBase]: 260/387 cut-off events. [2023-11-06 22:22:24,425 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:22:24,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 387 events. 260/387 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 1515 event pairs, 122 based on Foata normal form. 1/139 useless extension candidates. Maximal degree in co-relation 783. Up to 381 conditions per place. [2023-11-06 22:22:24,428 INFO L140 encePairwiseOnDemand]: 528/531 looper letters, 30 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-11-06 22:22:24,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 164 flow [2023-11-06 22:22:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:22:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:22:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 668 transitions. [2023-11-06 22:22:24,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41933458882611424 [2023-11-06 22:22:24,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 668 transitions. [2023-11-06 22:22:24,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 668 transitions. [2023-11-06 22:22:24,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:24,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 668 transitions. [2023-11-06 22:22:24,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 222.66666666666666) internal successors, (668), 3 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:24,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:24,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:24,442 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 114 flow. Second operand 3 states and 668 transitions. [2023-11-06 22:22:24,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 164 flow [2023-11-06 22:22:24,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 145 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-06 22:22:24,444 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 85 flow [2023-11-06 22:22:24,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=36, PETRI_TRANSITIONS=33} [2023-11-06 22:22:24,446 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2023-11-06 22:22:24,446 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 85 flow [2023-11-06 22:22:24,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.0) internal successors, (645), 3 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:24,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:24,447 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:22:24,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:24,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:24,661 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:24,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:24,662 INFO L85 PathProgramCache]: Analyzing trace with hash -990277549, now seen corresponding path program 1 times [2023-11-06 22:22:24,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:24,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786686746] [2023-11-06 22:22:24,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:24,662 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 [2023-11-06 22:22:24,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:24,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:24,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:24,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:24,748 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:22:24,750 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:24,772 INFO L351 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 7 [2023-11-06 22:22:24,786 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:24,787 INFO L351 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 [2023-11-06 22:22:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:24,794 INFO L351 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 [2023-11-06 22:22:24,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:24,809 INFO L351 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 [2023-11-06 22:22:24,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:24,825 INFO L351 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 [2023-11-06 22:22:24,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:24,836 INFO L351 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 [2023-11-06 22:22:24,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:24,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:22:24,869 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:24,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786686746] [2023-11-06 22:22:24,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786686746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:22:24,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:22:24,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:22:24,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209762743] [2023-11-06 22:22:24,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:22:24,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:22:24,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:24,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:22:24,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:22:25,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 531 [2023-11-06 22:22:25,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 85 flow. Second operand has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:25,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:25,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 531 [2023-11-06 22:22:25,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:25,629 INFO L124 PetriNetUnfolderBase]: 184/281 cut-off events. [2023-11-06 22:22:25,629 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:22:25,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 573 conditions, 281 events. 184/281 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1017 event pairs, 85 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 563. Up to 269 conditions per place. [2023-11-06 22:22:25,632 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 24 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-11-06 22:22:25,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 139 flow [2023-11-06 22:22:25,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:22:25,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:22:25,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 824 transitions. [2023-11-06 22:22:25,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3879472693032015 [2023-11-06 22:22:25,638 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 824 transitions. [2023-11-06 22:22:25,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 824 transitions. [2023-11-06 22:22:25,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:25,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 824 transitions. [2023-11-06 22:22:25,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:25,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:25,649 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:25,649 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 85 flow. Second operand 4 states and 824 transitions. [2023-11-06 22:22:25,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 139 flow [2023-11-06 22:22:25,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 138 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:22:25,651 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 90 flow [2023-11-06 22:22:25,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=90, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-11-06 22:22:25,652 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2023-11-06 22:22:25,653 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 90 flow [2023-11-06 22:22:25,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 201.25) internal successors, (805), 4 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:25,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:25,654 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:22:25,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:25,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:25,868 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:25,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:25,868 INFO L85 PathProgramCache]: Analyzing trace with hash -990914054, now seen corresponding path program 2 times [2023-11-06 22:22:25,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:25,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779622262] [2023-11-06 22:22:25,869 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:22:25,869 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 [2023-11-06 22:22:25,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:25,871 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:25,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:22:25,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:22:25,992 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:22:25,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:26,010 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:22:26,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:26,035 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:26,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:26,054 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:26,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:26,079 INFO L351 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 18 treesize of output 1 [2023-11-06 22:22:26,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:26,100 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:26,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:26,110 INFO L351 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 8 treesize of output 1 [2023-11-06 22:22:26,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:26,368 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:27,298 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:27,298 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:27,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779622262] [2023-11-06 22:22:27,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779622262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:27,299 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:27,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:22:27,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385016471] [2023-11-06 22:22:27,299 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:27,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:22:27,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:27,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:22:27,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:22:33,433 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 531 [2023-11-06 22:22:33,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 90 flow. Second operand has 12 states, 12 states have (on average 210.0) internal successors, (2520), 12 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:33,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:33,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 531 [2023-11-06 22:22:33,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:36,707 INFO L124 PetriNetUnfolderBase]: 190/293 cut-off events. [2023-11-06 22:22:36,707 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 22:22:36,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 293 events. 190/293 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 1060 event pairs, 85 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 603. Up to 279 conditions per place. [2023-11-06 22:22:36,710 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 21 selfloop transitions, 20 changer transitions 0/43 dead transitions. [2023-11-06 22:22:36,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 226 flow [2023-11-06 22:22:36,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:22:36,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:22:36,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2555 transitions. [2023-11-06 22:22:36,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009730069052103 [2023-11-06 22:22:36,724 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2555 transitions. [2023-11-06 22:22:36,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2555 transitions. [2023-11-06 22:22:36,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:36,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2555 transitions. [2023-11-06 22:22:36,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 212.91666666666666) internal successors, (2555), 12 states have internal predecessors, (2555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:36,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:36,754 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 531.0) internal successors, (6903), 13 states have internal predecessors, (6903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:36,755 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 90 flow. Second operand 12 states and 2555 transitions. [2023-11-06 22:22:36,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 226 flow [2023-11-06 22:22:36,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:22:36,758 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 206 flow [2023-11-06 22:22:36,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=206, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-11-06 22:22:36,759 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-11-06 22:22:36,759 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 206 flow [2023-11-06 22:22:36,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 210.0) internal successors, (2520), 12 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:36,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:36,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:22:36,782 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:22:36,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:36,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:36,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:36,977 INFO L85 PathProgramCache]: Analyzing trace with hash -990277548, now seen corresponding path program 1 times [2023-11-06 22:22:36,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:36,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214395116] [2023-11-06 22:22:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:36,978 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 [2023-11-06 22:22:36,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:36,980 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:37,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:37,093 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:22:37,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:37,216 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:37,217 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:37,414 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 31 [2023-11-06 22:22:37,576 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:22:37,576 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:37,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214395116] [2023-11-06 22:22:37,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214395116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:37,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:37,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:22:37,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809086885] [2023-11-06 22:22:37,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:37,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:22:37,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:37,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:22:37,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:22:40,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 531 [2023-11-06 22:22:40,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 206 flow. Second operand has 8 states, 8 states have (on average 206.25) internal successors, (1650), 8 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:40,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:40,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 531 [2023-11-06 22:22:40,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:22:41,808 INFO L124 PetriNetUnfolderBase]: 241/381 cut-off events. [2023-11-06 22:22:41,808 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-11-06 22:22:41,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 838 conditions, 381 events. 241/381 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 1621 event pairs, 44 based on Foata normal form. 0/168 useless extension candidates. Maximal degree in co-relation 821. Up to 232 conditions per place. [2023-11-06 22:22:41,810 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 43 selfloop transitions, 14 changer transitions 0/59 dead transitions. [2023-11-06 22:22:41,811 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 355 flow [2023-11-06 22:22:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:22:41,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:22:41,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1272 transitions. [2023-11-06 22:22:41,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3992467043314501 [2023-11-06 22:22:41,818 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1272 transitions. [2023-11-06 22:22:41,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1272 transitions. [2023-11-06 22:22:41,819 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:22:41,820 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1272 transitions. [2023-11-06 22:22:41,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.0) internal successors, (1272), 6 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:41,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:41,834 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:41,834 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 206 flow. Second operand 6 states and 1272 transitions. [2023-11-06 22:22:41,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 355 flow [2023-11-06 22:22:41,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 59 transitions, 320 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-11-06 22:22:41,838 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 216 flow [2023-11-06 22:22:41,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-06 22:22:41,840 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-11-06 22:22:41,840 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 216 flow [2023-11-06 22:22:41,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 206.25) internal successors, (1650), 8 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:41,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:22:41,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:22:41,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:42,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:22:42,055 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:22:42,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:22:42,056 INFO L85 PathProgramCache]: Analyzing trace with hash -633831959, now seen corresponding path program 1 times [2023-11-06 22:22:42,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:22:42,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1664522711] [2023-11-06 22:22:42,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:22:42,057 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 [2023-11-06 22:22:42,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:22:42,058 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:22:42,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:22:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:22:42,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:22:42,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:22:42,214 INFO L351 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 13 treesize of output 7 [2023-11-06 22:22:42,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:42,231 INFO L351 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 8 treesize of output 1 [2023-11-06 22:22:42,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:42,248 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:42,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:42,258 INFO L351 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 8 treesize of output 1 [2023-11-06 22:22:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:42,274 INFO L351 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 13 treesize of output 1 [2023-11-06 22:22:42,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:22:42,304 INFO L351 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 18 treesize of output 1 [2023-11-06 22:22:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:42,546 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:22:43,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:22:43,408 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:22:43,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1664522711] [2023-11-06 22:22:43,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1664522711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:22:43,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:22:43,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2023-11-06 22:22:43,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118800937] [2023-11-06 22:22:43,409 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:22:43,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:22:43,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:22:43,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:22:43,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:22:57,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 531 [2023-11-06 22:22:57,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 216 flow. Second operand has 8 states, 8 states have (on average 205.5) internal successors, (1644), 8 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:22:57,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:22:57,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 531 [2023-11-06 22:22:57,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:00,856 INFO L124 PetriNetUnfolderBase]: 336/576 cut-off events. [2023-11-06 22:23:00,856 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-06 22:23:00,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1335 conditions, 576 events. 336/576 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2626 event pairs, 183 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 1316. Up to 352 conditions per place. [2023-11-06 22:23:00,860 INFO L140 encePairwiseOnDemand]: 521/531 looper letters, 59 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-11-06 22:23:00,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 70 transitions, 422 flow [2023-11-06 22:23:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:23:00,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:23:00,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1697 transitions. [2023-11-06 22:23:00,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3994821092278719 [2023-11-06 22:23:00,869 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1697 transitions. [2023-11-06 22:23:00,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1697 transitions. [2023-11-06 22:23:00,871 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:00,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1697 transitions. [2023-11-06 22:23:00,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 212.125) internal successors, (1697), 8 states have internal predecessors, (1697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:00,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:00,887 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 531.0) internal successors, (4779), 9 states have internal predecessors, (4779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:00,887 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 216 flow. Second operand 8 states and 1697 transitions. [2023-11-06 22:23:00,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 70 transitions, 422 flow [2023-11-06 22:23:00,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 70 transitions, 413 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:23:00,893 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 254 flow [2023-11-06 22:23:00,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=254, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-11-06 22:23:00,894 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2023-11-06 22:23:00,894 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 254 flow [2023-11-06 22:23:00,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 205.5) internal successors, (1644), 8 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:00,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:00,895 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:23:00,910 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:23:01,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:01,110 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:23:01,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:01,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1118797013, now seen corresponding path program 2 times [2023-11-06 22:23:01,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:01,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229375978] [2023-11-06 22:23:01,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:23:01,111 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 [2023-11-06 22:23:01,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:01,114 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:23:01,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:23:01,254 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-06 22:23:01,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:01,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:23:01,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:01,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:23:01,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:01,294 INFO L351 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 13 treesize of output 1 [2023-11-06 22:23:01,319 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:01,320 INFO L351 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 18 treesize of output 1 [2023-11-06 22:23:01,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:01,332 INFO L351 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 13 treesize of output 1 [2023-11-06 22:23:01,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:01,345 INFO L351 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 13 treesize of output 1 [2023-11-06 22:23:01,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:01,352 INFO L351 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 8 treesize of output 1 [2023-11-06 22:23:01,489 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-06 22:23:01,489 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:23:01,490 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:01,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229375978] [2023-11-06 22:23:01,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229375978] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:23:01,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:23:01,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:23:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318600571] [2023-11-06 22:23:01,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:23:01,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:23:01,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:01,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:23:01,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:23:02,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 531 [2023-11-06 22:23:02,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:02,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:02,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 531 [2023-11-06 22:23:02,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:23:02,516 INFO L124 PetriNetUnfolderBase]: 179/341 cut-off events. [2023-11-06 22:23:02,517 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2023-11-06 22:23:02,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 341 events. 179/341 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1477 event pairs, 90 based on Foata normal form. 23/292 useless extension candidates. Maximal degree in co-relation 784. Up to 313 conditions per place. [2023-11-06 22:23:02,519 INFO L140 encePairwiseOnDemand]: 523/531 looper letters, 25 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2023-11-06 22:23:02,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 38 transitions, 288 flow [2023-11-06 22:23:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:23:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:23:02,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 866 transitions. [2023-11-06 22:23:02,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4077212806026365 [2023-11-06 22:23:02,524 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 866 transitions. [2023-11-06 22:23:02,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 866 transitions. [2023-11-06 22:23:02,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:23:02,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 866 transitions. [2023-11-06 22:23:02,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 216.5) internal successors, (866), 4 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:02,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:02,532 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:02,532 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 254 flow. Second operand 4 states and 866 transitions. [2023-11-06 22:23:02,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 38 transitions, 288 flow [2023-11-06 22:23:02,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 270 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:23:02,536 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 220 flow [2023-11-06 22:23:02,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=220, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-11-06 22:23:02,537 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 5 predicate places. [2023-11-06 22:23:02,537 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 220 flow [2023-11-06 22:23:02,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 212.5) internal successors, (850), 4 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:02,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:23:02,538 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-11-06 22:23:02,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:23:02,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:02,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:23:02,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:23:02,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1093460282, now seen corresponding path program 3 times [2023-11-06 22:23:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:23:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342013771] [2023-11-06 22:23:02,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:23:02,752 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:23:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:23:02,753 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:23:02,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:23:02,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:23:02,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:23:02,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:23:02,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:23:02,993 INFO L351 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 18 treesize of output 7 [2023-11-06 22:23:03,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:03,012 INFO L351 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 13 treesize of output 1 [2023-11-06 22:23:03,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:03,028 INFO L351 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 13 treesize of output 1 [2023-11-06 22:23:03,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:03,037 INFO L351 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 8 treesize of output 1 [2023-11-06 22:23:03,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:03,055 INFO L351 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 13 treesize of output 1 [2023-11-06 22:23:03,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:23:03,064 INFO L351 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 8 treesize of output 1 [2023-11-06 22:23:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:03,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:23:07,627 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:23:07,627 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:23:07,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342013771] [2023-11-06 22:23:07,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342013771] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:23:07,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:23:07,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-11-06 22:23:07,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665423366] [2023-11-06 22:23:07,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:23:07,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:23:07,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:23:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:23:07,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:23:39,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 531 [2023-11-06 22:23:39,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 220 flow. Second operand has 24 states, 24 states have (on average 210.0) internal successors, (5040), 24 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:23:39,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:23:39,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 531 [2023-11-06 22:23:39,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:01,222 INFO L124 PetriNetUnfolderBase]: 191/365 cut-off events. [2023-11-06 22:24:01,223 INFO L125 PetriNetUnfolderBase]: For 361/361 co-relation queries the response was YES. [2023-11-06 22:24:01,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 365 events. 191/365 cut-off events. For 361/361 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1521 event pairs, 90 based on Foata normal form. 12/305 useless extension candidates. Maximal degree in co-relation 909. Up to 329 conditions per place. [2023-11-06 22:24:01,225 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 16 selfloop transitions, 44 changer transitions 0/62 dead transitions. [2023-11-06 22:24:01,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 62 transitions, 544 flow [2023-11-06 22:24:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:24:01,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:24:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 5087 transitions. [2023-11-06 22:24:01,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3991682360326428 [2023-11-06 22:24:01,241 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 5087 transitions. [2023-11-06 22:24:01,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 5087 transitions. [2023-11-06 22:24:01,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:01,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 5087 transitions. [2023-11-06 22:24:01,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 211.95833333333334) internal successors, (5087), 24 states have internal predecessors, (5087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:01,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 531.0) internal successors, (13275), 25 states have internal predecessors, (13275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:01,290 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 531.0) internal successors, (13275), 25 states have internal predecessors, (13275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:01,291 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 220 flow. Second operand 24 states and 5087 transitions. [2023-11-06 22:24:01,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 62 transitions, 544 flow [2023-11-06 22:24:01,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:01,298 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 552 flow [2023-11-06 22:24:01,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=552, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2023-11-06 22:24:01,299 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-11-06 22:24:01,299 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 552 flow [2023-11-06 22:24:01,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 210.0) internal successors, (5040), 24 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:01,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:01,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:01,319 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:01,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:01,519 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:01,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:01,519 INFO L85 PathProgramCache]: Analyzing trace with hash 78233360, now seen corresponding path program 1 times [2023-11-06 22:24:01,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:01,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917677437] [2023-11-06 22:24:01,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:01,520 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 [2023-11-06 22:24:01,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:01,521 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:01,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:01,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:01,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:24:01,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:01,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:01,739 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:01,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:01,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917677437] [2023-11-06 22:24:01,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917677437] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:01,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:01,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:24:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536111857] [2023-11-06 22:24:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:24:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:24:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:24:01,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 531 [2023-11-06 22:24:01,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 552 flow. Second operand has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:01,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:01,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 531 [2023-11-06 22:24:01,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:02,214 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2023-11-06 22:24:02,214 INFO L125 PetriNetUnfolderBase]: For 240/240 co-relation queries the response was YES. [2023-11-06 22:24:02,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1177 conditions, 434 events. 233/434 cut-off events. For 240/240 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1877 event pairs, 39 based on Foata normal form. 3/359 useless extension candidates. Maximal degree in co-relation 1146. Up to 301 conditions per place. [2023-11-06 22:24:02,219 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 66 selfloop transitions, 3 changer transitions 1/72 dead transitions. [2023-11-06 22:24:02,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 717 flow [2023-11-06 22:24:02,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:24:02,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:24:02,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 672 transitions. [2023-11-06 22:24:02,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4218455743879473 [2023-11-06 22:24:02,223 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 672 transitions. [2023-11-06 22:24:02,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 672 transitions. [2023-11-06 22:24:02,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:02,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 672 transitions. [2023-11-06 22:24:02,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,233 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 531.0) internal successors, (2124), 4 states have internal predecessors, (2124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,233 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 552 flow. Second operand 3 states and 672 transitions. [2023-11-06 22:24:02,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 717 flow [2023-11-06 22:24:02,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 72 transitions, 577 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-11-06 22:24:02,244 INFO L231 Difference]: Finished difference. Result has 74 places, 64 transitions, 433 flow [2023-11-06 22:24:02,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=433, PETRI_PLACES=74, PETRI_TRANSITIONS=64} [2023-11-06 22:24:02,246 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 30 predicate places. [2023-11-06 22:24:02,247 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 64 transitions, 433 flow [2023-11-06 22:24:02,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:02,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:02,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:02,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:02,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:02,463 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:02,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash -912437128, now seen corresponding path program 1 times [2023-11-06 22:24:02,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:02,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676563155] [2023-11-06 22:24:02,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:02,464 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 [2023-11-06 22:24:02,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:02,466 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:02,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:02,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:02,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:02,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:02,697 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:02,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676563155] [2023-11-06 22:24:02,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676563155] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:02,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:02,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:02,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088384072] [2023-11-06 22:24:02,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:02,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:02,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:02,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:02,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:02,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 531 [2023-11-06 22:24:02,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 64 transitions, 433 flow. Second operand has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:02,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:02,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 531 [2023-11-06 22:24:02,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:03,350 INFO L124 PetriNetUnfolderBase]: 272/545 cut-off events. [2023-11-06 22:24:03,351 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2023-11-06 22:24:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1469 conditions, 545 events. 272/545 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2463 event pairs, 78 based on Foata normal form. 36/581 useless extension candidates. Maximal degree in co-relation 1437. Up to 268 conditions per place. [2023-11-06 22:24:03,356 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 52 selfloop transitions, 26 changer transitions 8/86 dead transitions. [2023-11-06 22:24:03,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 86 transitions, 662 flow [2023-11-06 22:24:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:03,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:03,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1290 transitions. [2023-11-06 22:24:03,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4048964218455744 [2023-11-06 22:24:03,363 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1290 transitions. [2023-11-06 22:24:03,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1290 transitions. [2023-11-06 22:24:03,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:03,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1290 transitions. [2023-11-06 22:24:03,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.0) internal successors, (1290), 6 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,373 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:03,374 INFO L175 Difference]: Start difference. First operand has 74 places, 64 transitions, 433 flow. Second operand 6 states and 1290 transitions. [2023-11-06 22:24:03,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 86 transitions, 662 flow [2023-11-06 22:24:03,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:03,382 INFO L231 Difference]: Finished difference. Result has 81 places, 65 transitions, 499 flow [2023-11-06 22:24:03,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=499, PETRI_PLACES=81, PETRI_TRANSITIONS=65} [2023-11-06 22:24:03,383 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-11-06 22:24:03,383 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 65 transitions, 499 flow [2023-11-06 22:24:03,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:03,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:03,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:03,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:03,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:03,597 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:03,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:03,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1553315508, now seen corresponding path program 2 times [2023-11-06 22:24:03,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:03,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1762045433] [2023-11-06 22:24:03,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:03,598 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 [2023-11-06 22:24:03,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:03,600 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:03,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:03,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:03,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:03,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:24:03,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:03,916 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:03,917 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:03,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:03,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1762045433] [2023-11-06 22:24:03,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1762045433] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:03,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:03,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2023-11-06 22:24:03,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629723646] [2023-11-06 22:24:03,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:03,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:24:04,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 531 [2023-11-06 22:24:04,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 65 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:04,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:04,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 531 [2023-11-06 22:24:04,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:04,569 INFO L124 PetriNetUnfolderBase]: 272/524 cut-off events. [2023-11-06 22:24:04,569 INFO L125 PetriNetUnfolderBase]: For 856/889 co-relation queries the response was YES. [2023-11-06 22:24:04,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 524 events. 272/524 cut-off events. For 856/889 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2302 event pairs, 72 based on Foata normal form. 21/530 useless extension candidates. Maximal degree in co-relation 1705. Up to 312 conditions per place. [2023-11-06 22:24:04,575 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 69 selfloop transitions, 4 changer transitions 4/78 dead transitions. [2023-11-06 22:24:04,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 700 flow [2023-11-06 22:24:04,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:04,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:24:04,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 889 transitions. [2023-11-06 22:24:04,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4185499058380414 [2023-11-06 22:24:04,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 889 transitions. [2023-11-06 22:24:04,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 889 transitions. [2023-11-06 22:24:04,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:04,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 889 transitions. [2023-11-06 22:24:04,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 222.25) internal successors, (889), 4 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:04,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:04,586 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:04,587 INFO L175 Difference]: Start difference. First operand has 81 places, 65 transitions, 499 flow. Second operand 4 states and 889 transitions. [2023-11-06 22:24:04,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 700 flow [2023-11-06 22:24:04,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 78 transitions, 618 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-11-06 22:24:04,597 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 451 flow [2023-11-06 22:24:04,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2023-11-06 22:24:04,598 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-11-06 22:24:04,598 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 451 flow [2023-11-06 22:24:04,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 217.75) internal successors, (871), 4 states have internal predecessors, (871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:04,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:04,599 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:04,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:04,815 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:04,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2080000999, now seen corresponding path program 1 times [2023-11-06 22:24:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:04,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [660852479] [2023-11-06 22:24:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:24:04,816 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 [2023-11-06 22:24:04,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:04,817 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:04,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:24:04,967 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:04,969 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:05,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:05,068 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:05,068 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:05,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [660852479] [2023-11-06 22:24:05,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [660852479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:05,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:05,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:05,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751090547] [2023-11-06 22:24:05,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:05,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:05,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:05,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:05,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:05,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 531 [2023-11-06 22:24:05,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 451 flow. Second operand has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:05,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:05,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 531 [2023-11-06 22:24:05,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:05,824 INFO L124 PetriNetUnfolderBase]: 302/599 cut-off events. [2023-11-06 22:24:05,824 INFO L125 PetriNetUnfolderBase]: For 840/840 co-relation queries the response was YES. [2023-11-06 22:24:05,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 599 events. 302/599 cut-off events. For 840/840 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2737 event pairs, 78 based on Foata normal form. 6/605 useless extension candidates. Maximal degree in co-relation 1955. Up to 286 conditions per place. [2023-11-06 22:24:05,830 INFO L140 encePairwiseOnDemand]: 524/531 looper letters, 52 selfloop transitions, 31 changer transitions 10/93 dead transitions. [2023-11-06 22:24:05,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 93 transitions, 735 flow [2023-11-06 22:24:05,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:24:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:24:05,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1495 transitions. [2023-11-06 22:24:05,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40220608017218185 [2023-11-06 22:24:05,835 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1495 transitions. [2023-11-06 22:24:05,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1495 transitions. [2023-11-06 22:24:05,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:05,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1495 transitions. [2023-11-06 22:24:05,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 213.57142857142858) internal successors, (1495), 7 states have internal predecessors, (1495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:05,841 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 531.0) internal successors, (4248), 8 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:05,842 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 531.0) internal successors, (4248), 8 states have internal predecessors, (4248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:05,842 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 451 flow. Second operand 7 states and 1495 transitions. [2023-11-06 22:24:05,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 93 transitions, 735 flow [2023-11-06 22:24:05,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 730 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:05,852 INFO L231 Difference]: Finished difference. Result has 88 places, 70 transitions, 547 flow [2023-11-06 22:24:05,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=547, PETRI_PLACES=88, PETRI_TRANSITIONS=70} [2023-11-06 22:24:05,853 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 44 predicate places. [2023-11-06 22:24:05,853 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 70 transitions, 547 flow [2023-11-06 22:24:05,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 209.66666666666666) internal successors, (1258), 6 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:05,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:05,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:05,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:06,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:06,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:06,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:06,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1373460347, now seen corresponding path program 2 times [2023-11-06 22:24:06,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:06,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1249089758] [2023-11-06 22:24:06,069 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:24:06,069 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 [2023-11-06 22:24:06,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:06,070 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:06,074 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:06,226 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:06,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:06,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:24:06,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:06,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:06,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:06,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:06,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1249089758] [2023-11-06 22:24:06,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1249089758] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:24:06,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:24:06,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2023-11-06 22:24:06,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343200706] [2023-11-06 22:24:06,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:24:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:06,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:24:06,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:24:06,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 531 [2023-11-06 22:24:06,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 70 transitions, 547 flow. Second operand has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:06,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:06,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 531 [2023-11-06 22:24:06,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:07,274 INFO L124 PetriNetUnfolderBase]: 266/527 cut-off events. [2023-11-06 22:24:07,274 INFO L125 PetriNetUnfolderBase]: For 1195/1219 co-relation queries the response was YES. [2023-11-06 22:24:07,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 527 events. 266/527 cut-off events. For 1195/1219 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2346 event pairs, 48 based on Foata normal form. 30/545 useless extension candidates. Maximal degree in co-relation 2082. Up to 312 conditions per place. [2023-11-06 22:24:07,281 INFO L140 encePairwiseOnDemand]: 527/531 looper letters, 73 selfloop transitions, 6 changer transitions 4/85 dead transitions. [2023-11-06 22:24:07,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 770 flow [2023-11-06 22:24:07,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:24:07,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:24:07,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 875 transitions. [2023-11-06 22:24:07,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119585687382298 [2023-11-06 22:24:07,285 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 875 transitions. [2023-11-06 22:24:07,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 875 transitions. [2023-11-06 22:24:07,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:07,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 875 transitions. [2023-11-06 22:24:07,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 218.75) internal successors, (875), 4 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:07,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:07,292 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 531.0) internal successors, (2655), 5 states have internal predecessors, (2655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:07,293 INFO L175 Difference]: Start difference. First operand has 88 places, 70 transitions, 547 flow. Second operand 4 states and 875 transitions. [2023-11-06 22:24:07,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 770 flow [2023-11-06 22:24:07,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 708 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-06 22:24:07,303 INFO L231 Difference]: Finished difference. Result has 89 places, 72 transitions, 524 flow [2023-11-06 22:24:07,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=524, PETRI_PLACES=89, PETRI_TRANSITIONS=72} [2023-11-06 22:24:07,304 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 45 predicate places. [2023-11-06 22:24:07,304 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 72 transitions, 524 flow [2023-11-06 22:24:07,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 213.75) internal successors, (855), 4 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:07,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:07,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:07,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:07,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:07,516 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:07,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:07,516 INFO L85 PathProgramCache]: Analyzing trace with hash -405040173, now seen corresponding path program 3 times [2023-11-06 22:24:07,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:07,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464523441] [2023-11-06 22:24:07,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:24:07,517 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 [2023-11-06 22:24:07,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:07,519 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:07,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:07,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:24:07,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:07,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:07,686 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:07,750 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:07,750 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:07,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464523441] [2023-11-06 22:24:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464523441] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:07,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:07,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:07,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719556203] [2023-11-06 22:24:07,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:07,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:07,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:07,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:07,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:07,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 531 [2023-11-06 22:24:07,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 72 transitions, 524 flow. Second operand has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:07,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:07,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 531 [2023-11-06 22:24:07,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:08,402 INFO L124 PetriNetUnfolderBase]: 341/686 cut-off events. [2023-11-06 22:24:08,403 INFO L125 PetriNetUnfolderBase]: For 1680/1680 co-relation queries the response was YES. [2023-11-06 22:24:08,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 686 events. 341/686 cut-off events. For 1680/1680 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3274 event pairs, 114 based on Foata normal form. 18/704 useless extension candidates. Maximal degree in co-relation 2732. Up to 424 conditions per place. [2023-11-06 22:24:08,411 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 57 selfloop transitions, 30 changer transitions 8/95 dead transitions. [2023-11-06 22:24:08,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 95 transitions, 826 flow [2023-11-06 22:24:08,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:08,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:08,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1288 transitions. [2023-11-06 22:24:08,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40426867545511613 [2023-11-06 22:24:08,414 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1288 transitions. [2023-11-06 22:24:08,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1288 transitions. [2023-11-06 22:24:08,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:08,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1288 transitions. [2023-11-06 22:24:08,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:08,432 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:08,433 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:08,433 INFO L175 Difference]: Start difference. First operand has 89 places, 72 transitions, 524 flow. Second operand 6 states and 1288 transitions. [2023-11-06 22:24:08,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 95 transitions, 826 flow [2023-11-06 22:24:08,441 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 95 transitions, 815 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-11-06 22:24:08,443 INFO L231 Difference]: Finished difference. Result has 96 places, 74 transitions, 609 flow [2023-11-06 22:24:08,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=514, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=609, PETRI_PLACES=96, PETRI_TRANSITIONS=74} [2023-11-06 22:24:08,444 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 52 predicate places. [2023-11-06 22:24:08,444 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 74 transitions, 609 flow [2023-11-06 22:24:08,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:08,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:08,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:08,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:08,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:08,659 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:08,659 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash -336410986, now seen corresponding path program 3 times [2023-11-06 22:24:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:08,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83994642] [2023-11-06 22:24:08,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:24:08,659 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 [2023-11-06 22:24:08,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:08,660 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:08,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:08,809 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-06 22:24:08,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:08,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:24:08,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:08,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:08,901 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:08,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:08,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83994642] [2023-11-06 22:24:08,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83994642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:08,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:08,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:08,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771423621] [2023-11-06 22:24:08,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:08,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:08,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:08,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:08,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:09,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 531 [2023-11-06 22:24:09,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 74 transitions, 609 flow. Second operand has 6 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:09,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:09,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 531 [2023-11-06 22:24:09,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:09,566 INFO L124 PetriNetUnfolderBase]: 353/689 cut-off events. [2023-11-06 22:24:09,566 INFO L125 PetriNetUnfolderBase]: For 2419/2419 co-relation queries the response was YES. [2023-11-06 22:24:09,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 689 events. 353/689 cut-off events. For 2419/2419 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3190 event pairs, 132 based on Foata normal form. 12/701 useless extension candidates. Maximal degree in co-relation 3150. Up to 418 conditions per place. [2023-11-06 22:24:09,594 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 57 selfloop transitions, 32 changer transitions 1/90 dead transitions. [2023-11-06 22:24:09,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 90 transitions, 881 flow [2023-11-06 22:24:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1298 transitions. [2023-11-06 22:24:09,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074074074074074 [2023-11-06 22:24:09,599 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1298 transitions. [2023-11-06 22:24:09,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1298 transitions. [2023-11-06 22:24:09,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:09,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1298 transitions. [2023-11-06 22:24:09,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 216.33333333333334) internal successors, (1298), 6 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:09,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:09,609 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:09,609 INFO L175 Difference]: Start difference. First operand has 96 places, 74 transitions, 609 flow. Second operand 6 states and 1298 transitions. [2023-11-06 22:24:09,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 90 transitions, 881 flow [2023-11-06 22:24:09,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 803 flow, removed 13 selfloop flow, removed 3 redundant places. [2023-11-06 22:24:09,624 INFO L231 Difference]: Finished difference. Result has 98 places, 76 transitions, 633 flow [2023-11-06 22:24:09,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=633, PETRI_PLACES=98, PETRI_TRANSITIONS=76} [2023-11-06 22:24:09,627 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 54 predicate places. [2023-11-06 22:24:09,628 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 76 transitions, 633 flow [2023-11-06 22:24:09,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 212.66666666666666) internal successors, (1276), 6 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:09,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:09,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:09,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:09,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:09,840 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:09,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:09,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2079716096, now seen corresponding path program 4 times [2023-11-06 22:24:09,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:09,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402988646] [2023-11-06 22:24:09,841 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:24:09,842 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 [2023-11-06 22:24:09,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:09,843 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:09,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:10,019 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:24:10,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:10,025 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:10,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:10,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:10,109 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:10,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402988646] [2023-11-06 22:24:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402988646] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:10,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:10,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:10,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716084339] [2023-11-06 22:24:10,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:10,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:10,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:10,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:10,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:10,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 531 [2023-11-06 22:24:10,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 76 transitions, 633 flow. Second operand has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:10,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:10,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 531 [2023-11-06 22:24:10,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:10,917 INFO L124 PetriNetUnfolderBase]: 371/719 cut-off events. [2023-11-06 22:24:10,918 INFO L125 PetriNetUnfolderBase]: For 2656/2656 co-relation queries the response was YES. [2023-11-06 22:24:10,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3289 conditions, 719 events. 371/719 cut-off events. For 2656/2656 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3282 event pairs, 144 based on Foata normal form. 12/731 useless extension candidates. Maximal degree in co-relation 3246. Up to 460 conditions per place. [2023-11-06 22:24:10,927 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 58 selfloop transitions, 33 changer transitions 5/96 dead transitions. [2023-11-06 22:24:10,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 96 transitions, 944 flow [2023-11-06 22:24:10,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1289 transitions. [2023-11-06 22:24:10,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40458254865034526 [2023-11-06 22:24:10,932 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1289 transitions. [2023-11-06 22:24:10,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1289 transitions. [2023-11-06 22:24:10,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:10,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1289 transitions. [2023-11-06 22:24:10,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.83333333333334) internal successors, (1289), 6 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:10,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:10,940 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:10,940 INFO L175 Difference]: Start difference. First operand has 98 places, 76 transitions, 633 flow. Second operand 6 states and 1289 transitions. [2023-11-06 22:24:10,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 96 transitions, 944 flow [2023-11-06 22:24:10,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 879 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:24:10,985 INFO L231 Difference]: Finished difference. Result has 103 places, 80 transitions, 703 flow [2023-11-06 22:24:10,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=703, PETRI_PLACES=103, PETRI_TRANSITIONS=80} [2023-11-06 22:24:10,986 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 59 predicate places. [2023-11-06 22:24:10,986 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 80 transitions, 703 flow [2023-11-06 22:24:10,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:10,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:10,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:11,004 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:11,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:11,188 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:11,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:11,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1898756373, now seen corresponding path program 4 times [2023-11-06 22:24:11,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:11,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658755657] [2023-11-06 22:24:11,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:24:11,189 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 [2023-11-06 22:24:11,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:11,190 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:11,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:11,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:24:11,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:11,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:11,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:11,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:11,436 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:24:11,436 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:11,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658755657] [2023-11-06 22:24:11,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658755657] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:24:11,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:24:11,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:24:11,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103366708] [2023-11-06 22:24:11,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:24:11,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:24:11,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:11,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:24:11,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:24:11,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 531 [2023-11-06 22:24:11,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 80 transitions, 703 flow. Second operand has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:11,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:11,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 531 [2023-11-06 22:24:11,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:12,181 INFO L124 PetriNetUnfolderBase]: 395/761 cut-off events. [2023-11-06 22:24:12,181 INFO L125 PetriNetUnfolderBase]: For 3250/3250 co-relation queries the response was YES. [2023-11-06 22:24:12,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3628 conditions, 761 events. 395/761 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3540 event pairs, 132 based on Foata normal form. 18/779 useless extension candidates. Maximal degree in co-relation 3582. Up to 442 conditions per place. [2023-11-06 22:24:12,191 INFO L140 encePairwiseOnDemand]: 525/531 looper letters, 61 selfloop transitions, 35 changer transitions 1/97 dead transitions. [2023-11-06 22:24:12,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 97 transitions, 970 flow [2023-11-06 22:24:12,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:24:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:24:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1288 transitions. [2023-11-06 22:24:12,195 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40426867545511613 [2023-11-06 22:24:12,195 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1288 transitions. [2023-11-06 22:24:12,195 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1288 transitions. [2023-11-06 22:24:12,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:12,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1288 transitions. [2023-11-06 22:24:12,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 214.66666666666666) internal successors, (1288), 6 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:12,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:12,200 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 531.0) internal successors, (3717), 7 states have internal predecessors, (3717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:12,200 INFO L175 Difference]: Start difference. First operand has 103 places, 80 transitions, 703 flow. Second operand 6 states and 1288 transitions. [2023-11-06 22:24:12,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 97 transitions, 970 flow [2023-11-06 22:24:12,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 97 transitions, 909 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-06 22:24:12,211 INFO L231 Difference]: Finished difference. Result has 107 places, 81 transitions, 729 flow [2023-11-06 22:24:12,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=729, PETRI_PLACES=107, PETRI_TRANSITIONS=81} [2023-11-06 22:24:12,212 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 63 predicate places. [2023-11-06 22:24:12,212 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 81 transitions, 729 flow [2023-11-06 22:24:12,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 210.66666666666666) internal successors, (1264), 6 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) [2023-11-06 22:24:12,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:12,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:12,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:12,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:12,413 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:12,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1521575841, now seen corresponding path program 5 times [2023-11-06 22:24:12,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:12,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1319303717] [2023-11-06 22:24:12,414 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:24:12,414 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:12,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:12,415 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:12,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:12,555 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:24:12,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:12,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:24:12,562 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:12,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:12,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:12,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:12,805 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:12,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1319303717] [2023-11-06 22:24:12,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1319303717] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:12,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-06 22:24:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332726099] [2023-11-06 22:24:12,806 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:12,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:24:12,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:12,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:24:12,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:24:12,972 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 531 [2023-11-06 22:24:12,974 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 81 transitions, 729 flow. Second operand has 8 states, 8 states have (on average 216.875) internal successors, (1735), 8 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:12,974 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:24:12,974 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 531 [2023-11-06 22:24:12,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:24:14,112 INFO L124 PetriNetUnfolderBase]: 527/989 cut-off events. [2023-11-06 22:24:14,112 INFO L125 PetriNetUnfolderBase]: For 4372/4462 co-relation queries the response was YES. [2023-11-06 22:24:14,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 989 events. 527/989 cut-off events. For 4372/4462 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4940 event pairs, 45 based on Foata normal form. 210/1187 useless extension candidates. Maximal degree in co-relation 4635. Up to 331 conditions per place. [2023-11-06 22:24:14,123 INFO L140 encePairwiseOnDemand]: 526/531 looper letters, 82 selfloop transitions, 40 changer transitions 8/133 dead transitions. [2023-11-06 22:24:14,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 133 transitions, 1325 flow [2023-11-06 22:24:14,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:24:14,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:24:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1984 transitions. [2023-11-06 22:24:14,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151496128897259 [2023-11-06 22:24:14,129 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1984 transitions. [2023-11-06 22:24:14,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1984 transitions. [2023-11-06 22:24:14,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:24:14,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1984 transitions. [2023-11-06 22:24:14,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 220.44444444444446) internal successors, (1984), 9 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:14,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 531.0) internal successors, (5310), 10 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:14,139 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 531.0) internal successors, (5310), 10 states have internal predecessors, (5310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:14,139 INFO L175 Difference]: Start difference. First operand has 107 places, 81 transitions, 729 flow. Second operand 9 states and 1984 transitions. [2023-11-06 22:24:14,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 133 transitions, 1325 flow [2023-11-06 22:24:14,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 133 transitions, 1231 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-06 22:24:14,154 INFO L231 Difference]: Finished difference. Result has 112 places, 85 transitions, 776 flow [2023-11-06 22:24:14,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=531, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=776, PETRI_PLACES=112, PETRI_TRANSITIONS=85} [2023-11-06 22:24:14,155 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 68 predicate places. [2023-11-06 22:24:14,155 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 85 transitions, 776 flow [2023-11-06 22:24:14,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.875) internal successors, (1735), 8 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:24:14,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:24:14,156 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:24:14,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:24:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:24:14,363 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 35 more)] === [2023-11-06 22:24:14,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:24:14,363 INFO L85 PathProgramCache]: Analyzing trace with hash -601515828, now seen corresponding path program 6 times [2023-11-06 22:24:14,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:24:14,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1576695915] [2023-11-06 22:24:14,363 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-06 22:24:14,364 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 [2023-11-06 22:24:14,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:24:14,364 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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) [2023-11-06 22:24:14,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83b673b6-9e9c-4ad6-9a2c-d9c7aa3dae8e/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 [2023-11-06 22:24:14,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-06 22:24:14,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:24:14,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:24:14,546 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:24:15,179 INFO L322 Elim1Store]: treesize reduction 568, result has 4.2 percent of original size [2023-11-06 22:24:15,179 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 838 treesize of output 152 [2023-11-06 22:24:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:15,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:24:18,078 INFO L322 Elim1Store]: treesize reduction 498, result has 21.3 percent of original size [2023-11-06 22:24:18,079 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 20 new quantified variables, introduced 66 case distinctions, treesize of input 955 treesize of output 282 [2023-11-06 22:24:45,597 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:24:45,597 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:24:45,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1576695915] [2023-11-06 22:24:45,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1576695915] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:24:45,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:24:45,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-06 22:24:45,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088331290] [2023-11-06 22:24:45,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:24:45,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:24:45,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:24:45,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:24:45,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:24:47,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:24:50,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:24:53,394 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-06 22:24:57,006 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1]