./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:54:34,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:54:34,524 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 21:54:34,533 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:54:34,534 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:54:34,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:54:34,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:54:34,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:54:34,583 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:54:34,591 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:54:34,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:54:34,592 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:54:34,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:54:34,595 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:54:34,595 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:54:34,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:54:34,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:54:34,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:54:34,597 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:54:34,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:54:34,600 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:54:34,600 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:54:34,601 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:54:34,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:54:34,602 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:54:34,602 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:54:34,603 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:54:34,603 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:54:34,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:54:34,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:54:34,606 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:54:34,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:54:34,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:34,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:54:34,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:54:34,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 21:54:34,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 21:54:34,608 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:54:34,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:54:34,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:54:34,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:54:34,609 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_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-24 21:54:34,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:54:34,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:54:34,973 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:54:34,974 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:54:34,975 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:54:34,976 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-24 21:54:38,294 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:54:38,549 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:54:38,550 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-24 21:54:38,559 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data/68c868e06/3a3f9521038a4409b4d4af8cfdc1a190/FLAG0fca85d3e [2023-11-24 21:54:38,574 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data/68c868e06/3a3f9521038a4409b4d4af8cfdc1a190 [2023-11-24 21:54:38,577 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:54:38,579 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:54:38,580 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:38,581 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:54:38,586 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:54:38,587 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:38" (1/1) ... [2023-11-24 21:54:38,588 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e10097e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:38, skipping insertion in model container [2023-11-24 21:54:38,588 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:38" (1/1) ... [2023-11-24 21:54:38,615 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:54:38,909 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:38,923 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) [2023-11-24 21:54:38,926 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@78203bf2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:38, skipping insertion in model container [2023-11-24 21:54:38,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:38,927 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 21:54:38,930 INFO L158 Benchmark]: Toolchain (without parser) took 349.54ms. Allocated memory is still 209.7MB. Free memory was 171.0MB in the beginning and 160.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:54:38,930 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 21:54:38,931 INFO L158 Benchmark]: CACSL2BoogieTranslator took 346.84ms. Allocated memory is still 209.7MB. Free memory was 170.5MB in the beginning and 160.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-24 21:54:38,933 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 104.9MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 346.84ms. Allocated memory is still 209.7MB. Free memory was 170.5MB in the beginning and 160.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 102]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 21:54:41,551 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 21:54:41,678 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 21:54:41,692 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 21:54:41,693 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 21:54:41,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 21:54:41,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 21:54:41,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 21:54:41,752 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 21:54:41,758 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 21:54:41,759 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 21:54:41,759 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 21:54:41,760 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 21:54:41,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 21:54:41,763 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 21:54:41,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 21:54:41,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 21:54:41,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 21:54:41,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 21:54:41,766 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 21:54:41,766 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 21:54:41,767 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 21:54:41,767 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 21:54:41,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 21:54:41,768 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 21:54:41,769 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 21:54:41,769 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 21:54:41,770 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 21:54:41,770 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 21:54:41,770 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 21:54:41,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 21:54:41,773 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 21:54:41,773 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 21:54:41,773 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 21:54:41,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:41,774 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 21:54:41,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 21:54:41,775 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 21:54:41,776 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 21:54:41,776 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 21:54:41,776 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 21:54:41,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 21:54:41,777 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 21:54:41,777 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 21:54:41,778 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_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db11e263e78e3a6bd75c2a0c3dda64920ec857df2fbb1d0b7b1072a48f36a31 [2023-11-24 21:54:42,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 21:54:42,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 21:54:42,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 21:54:42,274 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 21:54:42,275 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 21:54:42,277 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-24 21:54:45,564 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 21:54:45,933 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 21:54:45,934 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2023-11-24 21:54:45,947 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data/8d7aad4f2/1ae2f3b2f47344359bda7ee3d161e25a/FLAGca5c3f385 [2023-11-24 21:54:45,968 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/data/8d7aad4f2/1ae2f3b2f47344359bda7ee3d161e25a [2023-11-24 21:54:45,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 21:54:45,978 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 21:54:45,982 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:45,982 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 21:54:45,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 21:54:45,991 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:45" (1/1) ... [2023-11-24 21:54:45,993 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c20eae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:45, skipping insertion in model container [2023-11-24 21:54:45,993 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 09:54:45" (1/1) ... [2023-11-24 21:54:46,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:54:46,374 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:46,401 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 21:54:46,410 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 21:54:46,462 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:46,487 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 21:54:46,549 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 21:54:46,580 INFO L206 MainTranslator]: Completed translation [2023-11-24 21:54:46,581 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46 WrapperNode [2023-11-24 21:54:46,581 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 21:54:46,583 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 21:54:46,583 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 21:54:46,583 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 21:54:46,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,627 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,685 INFO L138 Inliner]: procedures = 28, calls = 51, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 289 [2023-11-24 21:54:46,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 21:54:46,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 21:54:46,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 21:54:46,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 21:54:46,702 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,703 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,710 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,747 INFO L175 MemorySlicer]: Split 22 memory accesses to 5 slices as follows [2, 6, 2, 2, 10]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 2, 1, 1, 2]. [2023-11-24 21:54:46,747 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,748 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,775 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,789 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 21:54:46,795 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 21:54:46,796 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 21:54:46,796 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 21:54:46,797 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (1/1) ... [2023-11-24 21:54:46,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 21:54:46,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 21:54:46,848 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 21:54:46,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 21:54:46,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 21:54:46,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-24 21:54:46,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-24 21:54:46,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-24 21:54:46,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-24 21:54:46,889 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-24 21:54:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-24 21:54:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-24 21:54:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-24 21:54:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-24 21:54:46,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-24 21:54:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 21:54:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-24 21:54:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-24 21:54:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-24 21:54:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-24 21:54:46,891 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-24 21:54:46,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-24 21:54:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-24 21:54:46,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-24 21:54:46,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-24 21:54:46,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 21:54:46,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 21:54:46,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 21:54:46,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0 [2023-11-24 21:54:46,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1 [2023-11-24 21:54:46,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#2 [2023-11-24 21:54:46,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#3 [2023-11-24 21:54:46,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#4 [2023-11-24 21:54:46,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 21:54:46,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-24 21:54:46,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-24 21:54:46,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-24 21:54:46,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-24 21:54:46,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-24 21:54:46,896 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-24 21:54:47,068 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 21:54:47,071 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 21:54:48,224 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 21:54:48,756 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 21:54:48,756 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 21:54:48,757 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:48 BoogieIcfgContainer [2023-11-24 21:54:48,757 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 21:54:48,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 21:54:48,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 21:54:48,764 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 21:54:48,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 09:54:45" (1/3) ... [2023-11-24 21:54:48,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b89740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:54:48, skipping insertion in model container [2023-11-24 21:54:48,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 09:54:46" (2/3) ... [2023-11-24 21:54:48,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59b89740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 09:54:48, skipping insertion in model container [2023-11-24 21:54:48,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 09:54:48" (3/3) ... [2023-11-24 21:54:48,770 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2023-11-24 21:54:48,793 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 21:54:48,793 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2023-11-24 21:54:48,793 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-24 21:54:48,910 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-24 21:54:48,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 95 transitions, 204 flow [2023-11-24 21:54:49,031 INFO L124 PetriNetUnfolderBase]: 8/93 cut-off events. [2023-11-24 21:54:49,032 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-24 21:54:49,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 8/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 261 event pairs, 0 based on Foata normal form. 0/43 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2023-11-24 21:54:49,039 INFO L82 GeneralOperation]: Start removeDead. Operand has 94 places, 95 transitions, 204 flow [2023-11-24 21:54:49,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 92 transitions, 196 flow [2023-11-24 21:54:49,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 21:54:49,075 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;@6dacbfd2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 21:54:49,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 68 error locations. [2023-11-24 21:54:49,081 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-24 21:54:49,081 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2023-11-24 21:54:49,081 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-24 21:54:49,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:49,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:54:49,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:54:49,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:49,089 INFO L85 PathProgramCache]: Analyzing trace with hash 934249, now seen corresponding path program 1 times [2023-11-24 21:54:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354329132] [2023-11-24 21:54:49,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:49,105 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 [2023-11-24 21:54:49,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:49,111 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:49,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:49,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:49,289 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:49,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-24 21:54:49,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:49,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:54:49,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:49,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-24 21:54:49,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:49,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:54:49,432 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:49,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-24 21:54:49,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:49,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-24 21:54:49,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:49,455 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:49,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:49,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354329132] [2023-11-24 21:54:49,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354329132] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:49,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:49,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-24 21:54:49,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242360200] [2023-11-24 21:54:49,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:49,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:49,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:49,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:49,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:49,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:54:49,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 92 transitions, 196 flow. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:49,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:49,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:54:49,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:50,064 INFO L124 PetriNetUnfolderBase]: 185/616 cut-off events. [2023-11-24 21:54:50,064 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-24 21:54:50,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 616 events. 185/616 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3834 event pairs, 112 based on Foata normal form. 1/434 useless extension candidates. Maximal degree in co-relation 823. Up to 292 conditions per place. [2023-11-24 21:54:50,077 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 32 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-24 21:54:50,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 256 flow [2023-11-24 21:54:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:54:50,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 208 transitions. [2023-11-24 21:54:50,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7298245614035088 [2023-11-24 21:54:50,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 208 transitions. [2023-11-24 21:54:50,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 208 transitions. [2023-11-24 21:54:50,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:50,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 208 transitions. [2023-11-24 21:54:50,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:50,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:50,112 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:50,114 INFO L175 Difference]: Start difference. First operand has 91 places, 92 transitions, 196 flow. Second operand 3 states and 208 transitions. [2023-11-24 21:54:50,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 256 flow [2023-11-24 21:54:50,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 88 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-24 21:54:50,146 INFO L231 Difference]: Finished difference. Result has 85 places, 88 transitions, 184 flow [2023-11-24 21:54:50,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=85, PETRI_TRANSITIONS=88} [2023-11-24 21:54:50,152 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -6 predicate places. [2023-11-24 21:54:50,153 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 88 transitions, 184 flow [2023-11-24 21:54:50,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:50,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:50,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-24 21:54:50,162 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-24 21:54:50,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:50,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:54:50,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:50,357 INFO L85 PathProgramCache]: Analyzing trace with hash 934250, now seen corresponding path program 1 times [2023-11-24 21:54:50,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:50,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316372231] [2023-11-24 21:54:50,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:50,358 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 [2023-11-24 21:54:50,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:50,400 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:50,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:50,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:54:50,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:50,550 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:54:50,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:50,566 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:54:50,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:50,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:54:50,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:50,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:54:50,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:50,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:54:50,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:50,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:54:50,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:50,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:50,739 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:50,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316372231] [2023-11-24 21:54:50,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316372231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:50,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:50,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:50,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762178543] [2023-11-24 21:54:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:54:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:50,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:54:50,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:54:51,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:54:51,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 88 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:51,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:51,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:54:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:51,746 INFO L124 PetriNetUnfolderBase]: 186/621 cut-off events. [2023-11-24 21:54:51,746 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-24 21:54:51,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 938 conditions, 621 events. 186/621 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3852 event pairs, 112 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 904. Up to 301 conditions per place. [2023-11-24 21:54:51,754 INFO L140 encePairwiseOnDemand]: 87/95 looper letters, 35 selfloop transitions, 6 changer transitions 0/93 dead transitions. [2023-11-24 21:54:51,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 93 transitions, 278 flow [2023-11-24 21:54:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:54:51,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:54:51,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2023-11-24 21:54:51,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7157894736842105 [2023-11-24 21:54:51,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 272 transitions. [2023-11-24 21:54:51,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 272 transitions. [2023-11-24 21:54:51,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:51,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 272 transitions. [2023-11-24 21:54:51,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:51,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:51,765 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:51,765 INFO L175 Difference]: Start difference. First operand has 85 places, 88 transitions, 184 flow. Second operand 4 states and 272 transitions. [2023-11-24 21:54:51,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 93 transitions, 278 flow [2023-11-24 21:54:51,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:54:51,770 INFO L231 Difference]: Finished difference. Result has 88 places, 92 transitions, 219 flow [2023-11-24 21:54:51,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=88, PETRI_TRANSITIONS=92} [2023-11-24 21:54:51,772 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, -3 predicate places. [2023-11-24 21:54:51,772 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 92 transitions, 219 flow [2023-11-24 21:54:51,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 57.75) internal successors, (231), 4 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:51,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:51,773 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2023-11-24 21:54:51,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:51,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:51,976 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:54:51,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:51,976 INFO L85 PathProgramCache]: Analyzing trace with hash 897844199, now seen corresponding path program 1 times [2023-11-24 21:54:51,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:51,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000163429] [2023-11-24 21:54:51,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:51,977 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 [2023-11-24 21:54:51,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:51,979 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:51,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:52,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:52,096 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:54:52,098 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:52,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-24 21:54:52,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:52,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:54:52,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:52,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:54:52,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:52,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:54:52,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:52,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:54:52,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:54:52,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:54:52,446 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:52,446 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:54:52,929 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:54:52,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:52,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000163429] [2023-11-24 21:54:52,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000163429] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:54:52,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:54:52,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-24 21:54:52,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963614476] [2023-11-24 21:54:52,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:54:52,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-24 21:54:52,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:52,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-24 21:54:52,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-11-24 21:54:54,974 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:54:54,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 92 transitions, 219 flow. Second operand has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:54,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:54,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:54:54,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:57,179 INFO L124 PetriNetUnfolderBase]: 192/639 cut-off events. [2023-11-24 21:54:57,180 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-24 21:54:57,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 639 events. 192/639 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3942 event pairs, 112 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 913. Up to 304 conditions per place. [2023-11-24 21:54:57,224 INFO L140 encePairwiseOnDemand]: 86/95 looper letters, 35 selfloop transitions, 24 changer transitions 0/111 dead transitions. [2023-11-24 21:54:57,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 111 transitions, 408 flow [2023-11-24 21:54:57,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-24 21:54:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-24 21:54:57,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 635 transitions. [2023-11-24 21:54:57,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6684210526315789 [2023-11-24 21:54:57,230 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 635 transitions. [2023-11-24 21:54:57,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 635 transitions. [2023-11-24 21:54:57,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:57,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 635 transitions. [2023-11-24 21:54:57,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 63.5) internal successors, (635), 10 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:57,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:57,237 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 95.0) internal successors, (1045), 11 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:57,238 INFO L175 Difference]: Start difference. First operand has 88 places, 92 transitions, 219 flow. Second operand 10 states and 635 transitions. [2023-11-24 21:54:57,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 111 transitions, 408 flow [2023-11-24 21:54:57,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 111 transitions, 408 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-24 21:54:57,243 INFO L231 Difference]: Finished difference. Result has 100 places, 111 transitions, 374 flow [2023-11-24 21:54:57,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=374, PETRI_PLACES=100, PETRI_TRANSITIONS=111} [2023-11-24 21:54:57,244 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2023-11-24 21:54:57,244 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 111 transitions, 374 flow [2023-11-24 21:54:57,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 58.0) internal successors, (580), 10 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:57,245 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:57,245 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:57,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:57,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:57,448 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:54:57,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:57,449 INFO L85 PathProgramCache]: Analyzing trace with hash -460111189, now seen corresponding path program 1 times [2023-11-24 21:54:57,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:57,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229447936] [2023-11-24 21:54:57,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:57,449 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 [2023-11-24 21:54:57,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:57,454 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:57,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:57,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:57,570 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 21:54:57,571 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:57,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 21:54:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:54:57,592 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:57,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:57,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229447936] [2023-11-24 21:54:57,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [229447936] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:57,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:57,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 21:54:57,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637836153] [2023-11-24 21:54:57,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:57,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 21:54:57,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:57,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 21:54:57,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 21:54:57,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:54:57,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 111 transitions, 374 flow. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:57,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:57,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:54:57,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:58,069 INFO L124 PetriNetUnfolderBase]: 192/637 cut-off events. [2023-11-24 21:54:58,069 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-11-24 21:54:58,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 637 events. 192/637 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3935 event pairs, 112 based on Foata normal form. 0/457 useless extension candidates. Maximal degree in co-relation 987. Up to 311 conditions per place. [2023-11-24 21:54:58,078 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 51 selfloop transitions, 6 changer transitions 0/109 dead transitions. [2023-11-24 21:54:58,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 109 transitions, 484 flow [2023-11-24 21:54:58,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 21:54:58,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-24 21:54:58,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2023-11-24 21:54:58,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263157894736842 [2023-11-24 21:54:58,080 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2023-11-24 21:54:58,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2023-11-24 21:54:58,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:58,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2023-11-24 21:54:58,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:58,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:58,083 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:58,083 INFO L175 Difference]: Start difference. First operand has 100 places, 111 transitions, 374 flow. Second operand 3 states and 207 transitions. [2023-11-24 21:54:58,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 109 transitions, 484 flow [2023-11-24 21:54:58,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 109 transitions, 432 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-24 21:54:58,090 INFO L231 Difference]: Finished difference. Result has 96 places, 109 transitions, 330 flow [2023-11-24 21:54:58,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=330, PETRI_PLACES=96, PETRI_TRANSITIONS=109} [2023-11-24 21:54:58,092 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 5 predicate places. [2023-11-24 21:54:58,092 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 109 transitions, 330 flow [2023-11-24 21:54:58,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:58,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:58,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:58,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:58,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:58,296 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:54:58,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -460111188, now seen corresponding path program 1 times [2023-11-24 21:54:58,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:58,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [576464789] [2023-11-24 21:54:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:58,297 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 [2023-11-24 21:54:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:58,300 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:58,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:58,432 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:54:58,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:54:58,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:54:58,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:54:58,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:54:58,559 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:54:58,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [576464789] [2023-11-24 21:54:58,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [576464789] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:54:58,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:54:58,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:54:58,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119320549] [2023-11-24 21:54:58,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:54:58,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:54:58,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:54:58,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:54:58,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:54:59,104 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:54:59,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 109 transitions, 330 flow. Second operand has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:59,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:54:59,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:54:59,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:54:59,623 INFO L124 PetriNetUnfolderBase]: 193/640 cut-off events. [2023-11-24 21:54:59,623 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-24 21:54:59,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 640 events. 193/640 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3934 event pairs, 112 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 981. Up to 319 conditions per place. [2023-11-24 21:54:59,629 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 53 selfloop transitions, 9 changer transitions 0/112 dead transitions. [2023-11-24 21:54:59,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 112 transitions, 460 flow [2023-11-24 21:54:59,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:54:59,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:54:59,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2023-11-24 21:54:59,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-24 21:54:59,632 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 325 transitions. [2023-11-24 21:54:59,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 325 transitions. [2023-11-24 21:54:59,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:54:59,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 325 transitions. [2023-11-24 21:54:59,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:59,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:59,635 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:59,636 INFO L175 Difference]: Start difference. First operand has 96 places, 109 transitions, 330 flow. Second operand 5 states and 325 transitions. [2023-11-24 21:54:59,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 112 transitions, 460 flow [2023-11-24 21:54:59,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 448 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:54:59,641 INFO L231 Difference]: Finished difference. Result has 100 places, 112 transitions, 359 flow [2023-11-24 21:54:59,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=359, PETRI_PLACES=100, PETRI_TRANSITIONS=112} [2023-11-24 21:54:59,642 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 9 predicate places. [2023-11-24 21:54:59,642 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 112 transitions, 359 flow [2023-11-24 21:54:59,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.4) internal successors, (292), 5 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:54:59,643 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:54:59,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:54:59,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:59,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:54:59,846 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:54:59,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:54:59,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1378543421, now seen corresponding path program 1 times [2023-11-24 21:54:59,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:54:59,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464788062] [2023-11-24 21:54:59,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:54:59,847 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 [2023-11-24 21:54:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:54:59,848 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:54:59,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:54:59,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:54:59,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 21:54:59,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:00,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:55:00,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:55:00,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:00,071 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:00,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464788062] [2023-11-24 21:55:00,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464788062] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:00,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:00,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 21:55:00,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589512377] [2023-11-24 21:55:00,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:00,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 21:55:00,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:00,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 21:55:00,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 21:55:00,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:55:00,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 112 transitions, 359 flow. Second operand has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:00,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:00,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:55:00,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:01,130 INFO L124 PetriNetUnfolderBase]: 194/643 cut-off events. [2023-11-24 21:55:01,130 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2023-11-24 21:55:01,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1052 conditions, 643 events. 194/643 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3955 event pairs, 112 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 1022. Up to 314 conditions per place. [2023-11-24 21:55:01,138 INFO L140 encePairwiseOnDemand]: 89/95 looper letters, 56 selfloop transitions, 9 changer transitions 0/115 dead transitions. [2023-11-24 21:55:01,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 115 transitions, 495 flow [2023-11-24 21:55:01,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 21:55:01,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-24 21:55:01,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 325 transitions. [2023-11-24 21:55:01,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6842105263157895 [2023-11-24 21:55:01,141 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 325 transitions. [2023-11-24 21:55:01,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 325 transitions. [2023-11-24 21:55:01,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:01,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 325 transitions. [2023-11-24 21:55:01,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 65.0) internal successors, (325), 5 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:01,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:01,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:01,145 INFO L175 Difference]: Start difference. First operand has 100 places, 112 transitions, 359 flow. Second operand 5 states and 325 transitions. [2023-11-24 21:55:01,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 115 transitions, 495 flow [2023-11-24 21:55:01,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 115 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:55:01,153 INFO L231 Difference]: Finished difference. Result has 104 places, 115 transitions, 388 flow [2023-11-24 21:55:01,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=388, PETRI_PLACES=104, PETRI_TRANSITIONS=115} [2023-11-24 21:55:01,157 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 13 predicate places. [2023-11-24 21:55:01,158 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 115 transitions, 388 flow [2023-11-24 21:55:01,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 58.6) internal successors, (293), 5 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:01,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:01,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:01,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:01,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:55:01,361 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:55:01,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:01,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1378543466, now seen corresponding path program 1 times [2023-11-24 21:55:01,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:01,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [946232678] [2023-11-24 21:55:01,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:01,362 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 [2023-11-24 21:55:01,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:01,363 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:55:01,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:01,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 21:55:01,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:01,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:55:01,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:01,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:01,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [946232678] [2023-11-24 21:55:01,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [946232678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:01,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:01,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:55:01,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077725770] [2023-11-24 21:55:01,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:01,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:55:01,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:01,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:55:01,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:55:01,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 95 [2023-11-24 21:55:01,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 115 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:01,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:01,681 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 95 [2023-11-24 21:55:01,681 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:02,084 INFO L124 PetriNetUnfolderBase]: 193/642 cut-off events. [2023-11-24 21:55:02,084 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-24 21:55:02,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 642 events. 193/642 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3910 event pairs, 112 based on Foata normal form. 1/465 useless extension candidates. Maximal degree in co-relation 1030. Up to 319 conditions per place. [2023-11-24 21:55:02,091 INFO L140 encePairwiseOnDemand]: 91/95 looper letters, 55 selfloop transitions, 7 changer transitions 0/114 dead transitions. [2023-11-24 21:55:02,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 114 transitions, 505 flow [2023-11-24 21:55:02,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:55:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:55:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 273 transitions. [2023-11-24 21:55:02,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.718421052631579 [2023-11-24 21:55:02,095 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 273 transitions. [2023-11-24 21:55:02,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 273 transitions. [2023-11-24 21:55:02,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:02,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 273 transitions. [2023-11-24 21:55:02,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:02,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:02,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:02,098 INFO L175 Difference]: Start difference. First operand has 104 places, 115 transitions, 388 flow. Second operand 4 states and 273 transitions. [2023-11-24 21:55:02,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 114 transitions, 505 flow [2023-11-24 21:55:02,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 114 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-24 21:55:02,102 INFO L231 Difference]: Finished difference. Result has 105 places, 114 transitions, 384 flow [2023-11-24 21:55:02,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=105, PETRI_TRANSITIONS=114} [2023-11-24 21:55:02,104 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 14 predicate places. [2023-11-24 21:55:02,104 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 114 transitions, 384 flow [2023-11-24 21:55:02,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:02,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:02,105 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:02,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:02,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:55:02,313 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:55:02,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:02,313 INFO L85 PathProgramCache]: Analyzing trace with hash 214809318, now seen corresponding path program 1 times [2023-11-24 21:55:02,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:02,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645066397] [2023-11-24 21:55:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:02,314 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 [2023-11-24 21:55:02,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:02,316 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:55:02,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:02,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-24 21:55:02,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:02,476 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 21:55:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:55:02,618 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:03,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-24 21:55:03,177 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:03,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645066397] [2023-11-24 21:55:03,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645066397] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:03,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:03,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-24 21:55:03,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181888958] [2023-11-24 21:55:03,178 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:03,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 21:55:03,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:03,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 21:55:03,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-11-24 21:55:06,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:55:06,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 114 transitions, 384 flow. Second operand has 11 states, 11 states have (on average 58.63636363636363) internal successors, (645), 11 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) [2023-11-24 21:55:06,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:06,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:55:06,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:08,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:55:09,321 INFO L124 PetriNetUnfolderBase]: 197/654 cut-off events. [2023-11-24 21:55:09,322 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-11-24 21:55:09,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1103 conditions, 654 events. 197/654 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3981 event pairs, 112 based on Foata normal form. 0/472 useless extension candidates. Maximal degree in co-relation 1063. Up to 320 conditions per place. [2023-11-24 21:55:09,330 INFO L140 encePairwiseOnDemand]: 85/95 looper letters, 53 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2023-11-24 21:55:09,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 126 transitions, 590 flow [2023-11-24 21:55:09,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 21:55:09,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-24 21:55:09,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 684 transitions. [2023-11-24 21:55:09,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2023-11-24 21:55:09,336 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 684 transitions. [2023-11-24 21:55:09,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 684 transitions. [2023-11-24 21:55:09,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:09,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 684 transitions. [2023-11-24 21:55:09,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 62.18181818181818) internal successors, (684), 11 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:09,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:09,343 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 95.0) internal successors, (1140), 12 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:09,344 INFO L175 Difference]: Start difference. First operand has 105 places, 114 transitions, 384 flow. Second operand 11 states and 684 transitions. [2023-11-24 21:55:09,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 126 transitions, 590 flow [2023-11-24 21:55:09,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 126 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-24 21:55:09,349 INFO L231 Difference]: Finished difference. Result has 116 places, 126 transitions, 506 flow [2023-11-24 21:55:09,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=506, PETRI_PLACES=116, PETRI_TRANSITIONS=126} [2023-11-24 21:55:09,351 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 25 predicate places. [2023-11-24 21:55:09,351 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 126 transitions, 506 flow [2023-11-24 21:55:09,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.63636363636363) internal successors, (645), 11 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) [2023-11-24 21:55:09,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:09,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 21:55:09,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:09,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:55:09,555 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:55:09,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:09,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1930844259, now seen corresponding path program 1 times [2023-11-24 21:55:09,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:09,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35022588] [2023-11-24 21:55:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 21:55:09,557 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 [2023-11-24 21:55:09,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:09,558 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:55:09,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 21:55:09,723 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 21:55:09,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:09,779 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 21:55:09,779 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 21:55:09,780 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:09,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35022588] [2023-11-24 21:55:09,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35022588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 21:55:09,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 21:55:09,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 21:55:09,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686053233] [2023-11-24 21:55:09,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 21:55:09,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 21:55:09,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:09,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 21:55:09,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 21:55:09,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 95 [2023-11-24 21:55:09,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 126 transitions, 506 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:09,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:09,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 95 [2023-11-24 21:55:09,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:10,283 INFO L124 PetriNetUnfolderBase]: 196/653 cut-off events. [2023-11-24 21:55:10,283 INFO L125 PetriNetUnfolderBase]: For 40/40 co-relation queries the response was YES. [2023-11-24 21:55:10,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 653 events. 196/653 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3940 event pairs, 112 based on Foata normal form. 1/475 useless extension candidates. Maximal degree in co-relation 1079. Up to 329 conditions per place. [2023-11-24 21:55:10,292 INFO L140 encePairwiseOnDemand]: 90/95 looper letters, 66 selfloop transitions, 7 changer transitions 0/125 dead transitions. [2023-11-24 21:55:10,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 125 transitions, 644 flow [2023-11-24 21:55:10,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 21:55:10,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-24 21:55:10,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2023-11-24 21:55:10,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7236842105263158 [2023-11-24 21:55:10,296 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 275 transitions. [2023-11-24 21:55:10,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 275 transitions. [2023-11-24 21:55:10,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-24 21:55:10,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 275 transitions. [2023-11-24 21:55:10,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:10,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:10,306 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:10,306 INFO L175 Difference]: Start difference. First operand has 116 places, 126 transitions, 506 flow. Second operand 4 states and 275 transitions. [2023-11-24 21:55:10,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 125 transitions, 644 flow [2023-11-24 21:55:10,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 125 transitions, 603 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-11-24 21:55:10,314 INFO L231 Difference]: Finished difference. Result has 115 places, 125 transitions, 471 flow [2023-11-24 21:55:10,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=95, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=471, PETRI_PLACES=115, PETRI_TRANSITIONS=125} [2023-11-24 21:55:10,317 INFO L281 CegarLoopForPetriNet]: 91 programPoint places, 24 predicate places. [2023-11-24 21:55:10,317 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 125 transitions, 471 flow [2023-11-24 21:55:10,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:10,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-24 21:55:10,318 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1] [2023-11-24 21:55:10,327 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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)] Ended with exit code 0 [2023-11-24 21:55:10,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-24 21:55:10,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 65 more)] === [2023-11-24 21:55:10,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 21:55:10,522 INFO L85 PathProgramCache]: Analyzing trace with hash -482310178, now seen corresponding path program 2 times [2023-11-24 21:55:10,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 21:55:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [418074817] [2023-11-24 21:55:10,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 21:55:10,523 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 [2023-11-24 21:55:10,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 21:55:10,524 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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) [2023-11-24 21:55:10,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f98b797-7bcd-4be5-aad7-f8285ed27843/bin/uautomizer-verify-NlZe1sFDwI/mathsat -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 [2023-11-24 21:55:10,655 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 21:55:10,655 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 21:55:10,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 21:55:10,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 21:55:10,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-24 21:55:10,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:10,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:55:10,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:10,699 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-24 21:55:10,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:10,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:55:10,724 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:10,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-24 21:55:10,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 21:55:10,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-24 21:55:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:11,081 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 21:55:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 21:55:12,032 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 21:55:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [418074817] [2023-11-24 21:55:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [418074817] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 21:55:12,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 21:55:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12 [2023-11-24 21:55:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628175902] [2023-11-24 21:55:12,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 21:55:12,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-24 21:55:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 21:55:12,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-24 21:55:12,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2023-11-24 21:55:18,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 95 [2023-11-24 21:55:18,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 125 transitions, 471 flow. Second operand has 14 states, 14 states have (on average 58.57142857142857) internal successors, (820), 14 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-24 21:55:18,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-24 21:55:18,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 95 [2023-11-24 21:55:18,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-24 21:55:24,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.69s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:55:27,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.12s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:55:31,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-24 21:55:32,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []