./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:50:29,940 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:50:30,026 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:50:30,033 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:50:30,036 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:50:30,096 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:50:30,100 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:50:30,101 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:50:30,102 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:50:30,108 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:50:30,110 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:50:30,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:50:30,112 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:50:30,114 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:50:30,115 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:50:30,115 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:50:30,116 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:50:30,116 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:50:30,117 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:50:30,117 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:50:30,118 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:50:30,119 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:50:30,119 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:50:30,120 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:50:30,120 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:50:30,121 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:50:30,121 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:50:30,122 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:50:30,122 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:50:30,123 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:30,125 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:50:30,125 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:50:30,125 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:50:30,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:50:30,126 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:50:30,126 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:50:30,127 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:50:30,127 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:50:30,127 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_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2023-11-06 22:50:30,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:50:30,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:50:30,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:50:30,560 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:50:30,561 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:50:30,562 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2023-11-06 22:50:34,428 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:34,751 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:34,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2023-11-06 22:50:34,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data/cf87dd3bd/10c557c126d44f1488ff3a078a106e7f/FLAG04cf5036c [2023-11-06 22:50:34,794 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data/cf87dd3bd/10c557c126d44f1488ff3a078a106e7f [2023-11-06 22:50:34,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:34,805 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:34,811 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:34,811 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:34,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:34,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:34" (1/1) ... [2023-11-06 22:50:34,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd34a89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:34, skipping insertion in model container [2023-11-06 22:50:34,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:34" (1/1) ... [2023-11-06 22:50:34,861 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:35,124 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:35,141 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-06 22:50:35,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4127bcf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:35, skipping insertion in model container [2023-11-06 22:50:35,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:35,143 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 22:50:35,145 INFO L158 Benchmark]: Toolchain (without parser) took 339.51ms. Allocated memory is still 167.8MB. Free memory was 129.7MB in the beginning and 120.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:50:35,146 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:50:35,147 INFO L158 Benchmark]: CACSL2BoogieTranslator took 332.11ms. Allocated memory is still 167.8MB. Free memory was 129.7MB in the beginning and 120.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:50:35,149 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 117.4MB. Free memory is still 69.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 332.11ms. Allocated memory is still 167.8MB. Free memory was 129.7MB in the beginning and 120.2MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 96]: 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_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:50:38,312 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:50:38,474 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 22:50:38,485 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:50:38,486 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:50:38,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:50:38,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:50:38,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:50:38,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:50:38,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:50:38,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:50:38,558 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:50:38,559 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:50:38,566 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:50:38,566 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:50:38,567 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:50:38,567 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:50:38,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:50:38,568 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:50:38,570 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:50:38,570 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:50:38,571 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:50:38,572 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:50:38,572 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 22:50:38,573 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 22:50:38,573 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:50:38,574 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:50:38,574 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:50:38,575 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:50:38,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:50:38,578 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:50:38,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:38,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:50:38,579 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:50:38,579 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 22:50:38,580 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 22:50:38,580 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:50:38,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:50:38,581 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:50:38,582 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 22:50:38,582 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:50:38,583 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_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c642b478618f67be61772197bb614a61e988cb880f57faee5dd0470714f61e7e [2023-11-06 22:50:39,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:50:39,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:50:39,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:50:39,141 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:50:39,141 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:50:39,143 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2023-11-06 22:50:42,806 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:50:43,143 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:50:43,143 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/sv-benchmarks/c/weaver/popl20-bad-counter-queue.wvr.c [2023-11-06 22:50:43,154 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data/2f91b7ad5/378e4f25533849fdb725c94a77a34ceb/FLAG4d740adc5 [2023-11-06 22:50:43,173 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/data/2f91b7ad5/378e4f25533849fdb725c94a77a34ceb [2023-11-06 22:50:43,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:50:43,179 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:50:43,180 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:43,181 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:50:43,190 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:50:43,191 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,192 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5eb91d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43, skipping insertion in model container [2023-11-06 22:50:43,192 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,224 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:43,457 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:43,488 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 22:50:43,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:50:43,540 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:43,558 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:50:43,627 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:50:43,654 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:50:43,654 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:50:43,684 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:50:43,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43 WrapperNode [2023-11-06 22:50:43,697 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:50:43,699 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:43,699 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:50:43,700 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:50:43,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,742 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,786 INFO L138 Inliner]: procedures = 28, calls = 41, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 146 [2023-11-06 22:50:43,787 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:50:43,788 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:50:43,788 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:50:43,788 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:50:43,801 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,802 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,830 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,862 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,867 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,886 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:50:43,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:50:43,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:50:43,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:50:43,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (1/1) ... [2023-11-06 22:50:43,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:50:43,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:50:43,944 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:50:43,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:50:44,007 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:50:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 22:50:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:50:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 22:50:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:50:44,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:50:44,009 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:50:44,010 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:50:44,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:50:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:50:44,013 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 22:50:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:50:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:50:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:50:44,014 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 22:50:44,017 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:50:44,235 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:50:44,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:50:44,942 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:50:45,257 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:50:45,259 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-06 22:50:45,262 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:45 BoogieIcfgContainer [2023-11-06 22:50:45,262 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:50:45,266 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:50:45,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:50:45,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:50:45,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:50:43" (1/3) ... [2023-11-06 22:50:45,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5cda3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:45, skipping insertion in model container [2023-11-06 22:50:45,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:50:43" (2/3) ... [2023-11-06 22:50:45,276 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5cda3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:50:45, skipping insertion in model container [2023-11-06 22:50:45,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:50:45" (3/3) ... [2023-11-06 22:50:45,278 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-counter-queue.wvr.c [2023-11-06 22:50:45,302 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:50:45,303 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-06 22:50:45,303 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:50:45,421 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:50:45,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 139 transitions, 292 flow [2023-11-06 22:50:45,568 INFO L124 PetriNetUnfolderBase]: 9/137 cut-off events. [2023-11-06 22:50:45,569 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:50:45,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 9/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 145 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-06 22:50:45,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 137 places, 139 transitions, 292 flow [2023-11-06 22:50:45,583 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 132 transitions, 276 flow [2023-11-06 22:50:45,588 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:50:45,607 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 132 transitions, 276 flow [2023-11-06 22:50:45,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 132 transitions, 276 flow [2023-11-06 22:50:45,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 132 transitions, 276 flow [2023-11-06 22:50:45,686 INFO L124 PetriNetUnfolderBase]: 9/132 cut-off events. [2023-11-06 22:50:45,686 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:50:45,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 132 events. 9/132 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 144 event pairs, 0 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2023-11-06 22:50:45,691 INFO L119 LiptonReduction]: Number of co-enabled transitions 1036 [2023-11-06 22:51:02,907 INFO L134 LiptonReduction]: Checked pairs total: 1662 [2023-11-06 22:51:02,907 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-11-06 22:51:02,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:51:02,933 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;@52825299, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:51:02,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-06 22:51:02,936 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:51:02,937 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 22:51:02,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:51:02,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:02,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:51:02,939 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:02,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 20761, now seen corresponding path program 1 times [2023-11-06 22:51:02,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:02,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1755740941] [2023-11-06 22:51:02,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:02,962 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:02,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:02,973 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:02,980 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-06 22:51:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:03,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:51:03,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:03,215 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:51:03,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:03,238 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:03,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:03,273 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:03,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:03,303 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:03,321 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:03,322 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:03,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:03,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:03,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:03,359 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:03,361 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:03,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1755740941] [2023-11-06 22:51:03,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1755740941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:03,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:03,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004457507] [2023-11-06 22:51:03,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:03,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:03,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:03,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:03,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 279 [2023-11-06 22:51:03,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:03,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:03,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 279 [2023-11-06 22:51:03,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:04,110 INFO L124 PetriNetUnfolderBase]: 432/634 cut-off events. [2023-11-06 22:51:04,111 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-11-06 22:51:04,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1287 conditions, 634 events. 432/634 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2685 event pairs, 222 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 1124. Up to 627 conditions per place. [2023-11-06 22:51:04,126 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 31 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-06 22:51:04,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 38 transitions, 160 flow [2023-11-06 22:51:04,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:04,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-06 22:51:04,159 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46833930704898447 [2023-11-06 22:51:04,160 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-06 22:51:04,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-06 22:51:04,167 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:04,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-06 22:51:04,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,186 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,190 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 80 flow. Second operand 3 states and 392 transitions. [2023-11-06 22:51:04,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 38 transitions, 160 flow [2023-11-06 22:51:04,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 152 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:51:04,199 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 103 flow [2023-11-06 22:51:04,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-11-06 22:51:04,208 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-11-06 22:51:04,208 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 103 flow [2023-11-06 22:51:04,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:04,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:51:04,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:04,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:04,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:04,425 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:04,426 INFO L85 PathProgramCache]: Analyzing trace with hash 20760, now seen corresponding path program 1 times [2023-11-06 22:51:04,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:04,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1473780876] [2023-11-06 22:51:04,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:04,427 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:04,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:04,462 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:04,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-06 22:51:04,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:04,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:51:04,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:04,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-06 22:51:04,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:04,549 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:51:04,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:04,558 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:51:04,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:04,568 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:51:04,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:04,583 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:51:04,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:04,603 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:51:04,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:04,608 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:04,609 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:04,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1473780876] [2023-11-06 22:51:04,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1473780876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:04,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:04,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:04,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265801632] [2023-11-06 22:51:04,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:04,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:04,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:04,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 279 [2023-11-06 22:51:04,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:04,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:04,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 279 [2023-11-06 22:51:04,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:05,124 INFO L124 PetriNetUnfolderBase]: 432/632 cut-off events. [2023-11-06 22:51:05,125 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:51:05,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1283 conditions, 632 events. 432/632 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2669 event pairs, 222 based on Foata normal form. 2/227 useless extension candidates. Maximal degree in co-relation 1245. Up to 623 conditions per place. [2023-11-06 22:51:05,136 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 27 selfloop transitions, 7 changer transitions 0/36 dead transitions. [2023-11-06 22:51:05,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 36 transitions, 169 flow [2023-11-06 22:51:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:05,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:05,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions. [2023-11-06 22:51:05,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635603345280765 [2023-11-06 22:51:05,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions. [2023-11-06 22:51:05,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions. [2023-11-06 22:51:05,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:05,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions. [2023-11-06 22:51:05,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,151 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 103 flow. Second operand 3 states and 388 transitions. [2023-11-06 22:51:05,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 36 transitions, 169 flow [2023-11-06 22:51:05,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 36 transitions, 162 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:05,155 INFO L231 Difference]: Finished difference. Result has 36 places, 36 transitions, 108 flow [2023-11-06 22:51:05,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=36, PETRI_TRANSITIONS=36} [2023-11-06 22:51:05,157 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -2 predicate places. [2023-11-06 22:51:05,157 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 36 transitions, 108 flow [2023-11-06 22:51:05,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:05,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:05,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:51:05,179 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:05,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:05,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:05,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:05,374 INFO L85 PathProgramCache]: Analyzing trace with hash 644852, now seen corresponding path program 1 times [2023-11-06 22:51:05,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:05,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1421630349] [2023-11-06 22:51:05,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:05,376 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:05,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:05,389 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:05,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-06 22:51:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:05,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:51:05,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:05,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:05,530 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-06 22:51:05,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:51:05,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:05,611 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 22:51:05,611 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-06 22:51:05,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-06 22:51:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:05,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:06,141 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:06,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1421630349] [2023-11-06 22:51:06,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1421630349] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:06,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:06,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:51:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337180892] [2023-11-06 22:51:06,142 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:06,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:51:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:06,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:51:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:51:07,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 279 [2023-11-06 22:51:07,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 36 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:07,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:07,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 279 [2023-11-06 22:51:07,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:08,241 INFO L124 PetriNetUnfolderBase]: 437/643 cut-off events. [2023-11-06 22:51:08,242 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-06 22:51:08,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 643 events. 437/643 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 2707 event pairs, 222 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 1245. Up to 627 conditions per place. [2023-11-06 22:51:08,248 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 32 selfloop transitions, 13 changer transitions 0/47 dead transitions. [2023-11-06 22:51:08,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 47 transitions, 252 flow [2023-11-06 22:51:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:51:08,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:51:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 697 transitions. [2023-11-06 22:51:08,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4163679808841099 [2023-11-06 22:51:08,254 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 697 transitions. [2023-11-06 22:51:08,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 697 transitions. [2023-11-06 22:51:08,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:08,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 697 transitions. [2023-11-06 22:51:08,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.16666666666667) internal successors, (697), 6 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 279.0) internal successors, (1953), 7 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,266 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 279.0) internal successors, (1953), 7 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,266 INFO L175 Difference]: Start difference. First operand has 36 places, 36 transitions, 108 flow. Second operand 6 states and 697 transitions. [2023-11-06 22:51:08,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 47 transitions, 252 flow [2023-11-06 22:51:08,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 47 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:08,270 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 190 flow [2023-11-06 22:51:08,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-06 22:51:08,271 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-11-06 22:51:08,272 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 190 flow [2023-11-06 22:51:08,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.0) internal successors, (654), 6 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:08,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 22:51:08,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:08,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:08,487 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:08,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash 20789, now seen corresponding path program 1 times [2023-11-06 22:51:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:08,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557970651] [2023-11-06 22:51:08,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:08,488 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:08,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:08,495 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:08,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-06 22:51:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:08,579 INFO L262 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:51:08,581 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:08,618 INFO L322 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-06 22:51:08,619 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-06 22:51:08,647 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:51:08,648 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-06 22:51:08,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:08,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:08,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:08,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557970651] [2023-11-06 22:51:08,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557970651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:08,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:08,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:08,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862399095] [2023-11-06 22:51:08,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:08,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:08,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:08,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:08,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:08,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 279 [2023-11-06 22:51:08,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:08,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:08,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 279 [2023-11-06 22:51:08,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:09,162 INFO L124 PetriNetUnfolderBase]: 331/499 cut-off events. [2023-11-06 22:51:09,163 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:51:09,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 499 events. 331/499 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2026 event pairs, 167 based on Foata normal form. 2/203 useless extension candidates. Maximal degree in co-relation 1001. Up to 493 conditions per place. [2023-11-06 22:51:09,168 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 36 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-11-06 22:51:09,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 231 flow [2023-11-06 22:51:09,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-11-06 22:51:09,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45161290322580644 [2023-11-06 22:51:09,172 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-11-06 22:51:09,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-11-06 22:51:09,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:09,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-11-06 22:51:09,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:09,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:09,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:09,180 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 190 flow. Second operand 3 states and 378 transitions. [2023-11-06 22:51:09,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 231 flow [2023-11-06 22:51:09,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 228 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:09,184 INFO L231 Difference]: Finished difference. Result has 42 places, 39 transitions, 156 flow [2023-11-06 22:51:09,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=42, PETRI_TRANSITIONS=39} [2023-11-06 22:51:09,185 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-06 22:51:09,186 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 39 transitions, 156 flow [2023-11-06 22:51:09,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:09,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:09,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:51:09,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:09,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:09,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:09,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:09,401 INFO L85 PathProgramCache]: Analyzing trace with hash 644822, now seen corresponding path program 1 times [2023-11-06 22:51:09,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:09,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478286016] [2023-11-06 22:51:09,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:09,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:09,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:09,403 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:09,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-06 22:51:09,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:09,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:51:09,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:09,498 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:51:09,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:09,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:09,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:09,563 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:09,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:09,579 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:09,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:09,595 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:09,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:09,605 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:09,673 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:09,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:09,953 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:09,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478286016] [2023-11-06 22:51:09,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478286016] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:09,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:09,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 22:51:09,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441922539] [2023-11-06 22:51:09,954 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:09,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:51:09,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:09,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:51:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:51:11,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 279 [2023-11-06 22:51:11,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 39 transitions, 156 flow. Second operand has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 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) [2023-11-06 22:51:11,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:11,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 279 [2023-11-06 22:51:11,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:12,075 INFO L124 PetriNetUnfolderBase]: 330/496 cut-off events. [2023-11-06 22:51:12,075 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-06 22:51:12,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1036 conditions, 496 events. 330/496 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2075 event pairs, 167 based on Foata normal form. 3/201 useless extension candidates. Maximal degree in co-relation 1023. Up to 487 conditions per place. [2023-11-06 22:51:12,080 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 27 selfloop transitions, 9 changer transitions 0/38 dead transitions. [2023-11-06 22:51:12,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 222 flow [2023-11-06 22:51:12,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:51:12,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 22:51:12,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-11-06 22:51:12,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4283154121863799 [2023-11-06 22:51:12,086 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-11-06 22:51:12,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-11-06 22:51:12,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:12,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-11-06 22:51:12,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 279.0) internal successors, (1953), 7 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,096 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 279.0) internal successors, (1953), 7 states have internal predecessors, (1953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,097 INFO L175 Difference]: Start difference. First operand has 42 places, 39 transitions, 156 flow. Second operand 6 states and 717 transitions. [2023-11-06 22:51:12,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 222 flow [2023-11-06 22:51:12,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 38 transitions, 203 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:12,100 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 149 flow [2023-11-06 22:51:12,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=149, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-06 22:51:12,102 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 7 predicate places. [2023-11-06 22:51:12,102 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 149 flow [2023-11-06 22:51:12,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 114.0) internal successors, (684), 6 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) [2023-11-06 22:51:12,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:12,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:51:12,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:12,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:12,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:12,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:12,312 INFO L85 PathProgramCache]: Analyzing trace with hash 19994603, now seen corresponding path program 1 times [2023-11-06 22:51:12,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:12,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939180862] [2023-11-06 22:51:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:12,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:12,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:12,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:12,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-06 22:51:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:12,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:51:12,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:12,457 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:51:12,457 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-06 22:51:12,492 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:51:12,494 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-06 22:51:12,522 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 22:51:12,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-06 22:51:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:12,593 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:12,593 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:12,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939180862] [2023-11-06 22:51:12,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939180862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:12,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:12,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:12,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303617403] [2023-11-06 22:51:12,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:12,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:12,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:12,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:12,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:12,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 279 [2023-11-06 22:51:12,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:12,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:12,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 279 [2023-11-06 22:51:12,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:12,998 INFO L124 PetriNetUnfolderBase]: 313/467 cut-off events. [2023-11-06 22:51:12,998 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-06 22:51:12,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 977 conditions, 467 events. 313/467 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1893 event pairs, 158 based on Foata normal form. 0/193 useless extension candidates. Maximal degree in co-relation 964. Up to 461 conditions per place. [2023-11-06 22:51:13,004 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 33 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-06 22:51:13,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 36 transitions, 213 flow [2023-11-06 22:51:13,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:13,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:13,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-11-06 22:51:13,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44922341696535245 [2023-11-06 22:51:13,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-11-06 22:51:13,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-11-06 22:51:13,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:13,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-11-06 22:51:13,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,014 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 149 flow. Second operand 3 states and 376 transitions. [2023-11-06 22:51:13,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 36 transitions, 213 flow [2023-11-06 22:51:13,016 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 36 transitions, 185 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-06 22:51:13,018 INFO L231 Difference]: Finished difference. Result has 40 places, 36 transitions, 119 flow [2023-11-06 22:51:13,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=40, PETRI_TRANSITIONS=36} [2023-11-06 22:51:13,019 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 2 predicate places. [2023-11-06 22:51:13,019 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 36 transitions, 119 flow [2023-11-06 22:51:13,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:13,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:51:13,038 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:13,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:13,235 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:13,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:13,235 INFO L85 PathProgramCache]: Analyzing trace with hash 19994602, now seen corresponding path program 1 times [2023-11-06 22:51:13,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:13,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [470539607] [2023-11-06 22:51:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:13,236 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:13,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:13,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:13,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-06 22:51:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:13,326 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:51:13,328 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:13,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-06 22:51:13,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:13,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:13,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:51:13,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:13,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:13,404 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:51:13,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:13,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:13,438 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:13,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [470539607] [2023-11-06 22:51:13,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [470539607] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:13,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:13,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:51:13,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623002628] [2023-11-06 22:51:13,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:13,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:51:13,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:13,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:51:13,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:51:13,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 279 [2023-11-06 22:51:13,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:13,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 279 [2023-11-06 22:51:13,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:13,822 INFO L124 PetriNetUnfolderBase]: 296/438 cut-off events. [2023-11-06 22:51:13,823 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 22:51:13,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 903 conditions, 438 events. 296/438 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 1749 event pairs, 149 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 890. Up to 432 conditions per place. [2023-11-06 22:51:13,828 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 31 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-06 22:51:13,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 179 flow [2023-11-06 22:51:13,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:13,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:13,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2023-11-06 22:51:13,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45758661887694146 [2023-11-06 22:51:13,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2023-11-06 22:51:13,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2023-11-06 22:51:13,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:13,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2023-11-06 22:51:13,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,837 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 119 flow. Second operand 3 states and 383 transitions. [2023-11-06 22:51:13,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 179 flow [2023-11-06 22:51:13,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:13,840 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 116 flow [2023-11-06 22:51:13,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2023-11-06 22:51:13,841 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-11-06 22:51:13,841 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 116 flow [2023-11-06 22:51:13,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:13,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:13,842 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:13,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:14,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:14,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:14,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:14,056 INFO L85 PathProgramCache]: Analyzing trace with hash 619828646, now seen corresponding path program 1 times [2023-11-06 22:51:14,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:14,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663617200] [2023-11-06 22:51:14,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:14,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:14,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:14,060 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:14,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-06 22:51:14,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:14,135 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:51:14,139 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:14,156 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-06 22:51:14,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:14,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-06 22:51:14,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:14,189 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:51:14,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:14,200 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:51:14,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:14,231 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-06 22:51:14,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:14,239 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-06 22:51:14,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:14,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:14,262 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:14,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663617200] [2023-11-06 22:51:14,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663617200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:14,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:14,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:14,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934951941] [2023-11-06 22:51:14,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:14,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:14,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:14,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:14,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:14,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 279 [2023-11-06 22:51:14,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:14,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 279 [2023-11-06 22:51:14,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:14,796 INFO L124 PetriNetUnfolderBase]: 196/301 cut-off events. [2023-11-06 22:51:14,797 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-11-06 22:51:14,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 301 events. 196/301 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1110 event pairs, 99 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 616. Up to 289 conditions per place. [2023-11-06 22:51:14,800 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 23 selfloop transitions, 7 changer transitions 0/32 dead transitions. [2023-11-06 22:51:14,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 172 flow [2023-11-06 22:51:14,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:51:14,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:51:14,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 484 transitions. [2023-11-06 22:51:14,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4336917562724014 [2023-11-06 22:51:14,804 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 484 transitions. [2023-11-06 22:51:14,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 484 transitions. [2023-11-06 22:51:14,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:14,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 484 transitions. [2023-11-06 22:51:14,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,811 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 116 flow. Second operand 4 states and 484 transitions. [2023-11-06 22:51:14,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 172 flow [2023-11-06 22:51:14,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 32 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:14,818 INFO L231 Difference]: Finished difference. Result has 39 places, 32 transitions, 125 flow [2023-11-06 22:51:14,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=32} [2023-11-06 22:51:14,823 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 1 predicate places. [2023-11-06 22:51:14,823 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 32 transitions, 125 flow [2023-11-06 22:51:14,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 116.0) internal successors, (464), 4 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:14,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:14,824 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:51:14,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:15,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:15,037 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:15,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:15,037 INFO L85 PathProgramCache]: Analyzing trace with hash 619828647, now seen corresponding path program 1 times [2023-11-06 22:51:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:15,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1545291947] [2023-11-06 22:51:15,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:15,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:15,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:15,040 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:15,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-06 22:51:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:15,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:51:15,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:15,146 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:51:15,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:15,159 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:15,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:15,190 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:15,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:15,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:15,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:15,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:15,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:15,244 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:15,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:15,379 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:15,379 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:15,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1545291947] [2023-11-06 22:51:15,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1545291947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:15,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:15,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:15,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727565576] [2023-11-06 22:51:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:15,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:51:15,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:51:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:51:15,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 279 [2023-11-06 22:51:15,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 32 transitions, 125 flow. Second operand has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 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) [2023-11-06 22:51:15,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:15,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 279 [2023-11-06 22:51:15,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:16,295 INFO L124 PetriNetUnfolderBase]: 252/391 cut-off events. [2023-11-06 22:51:16,296 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 22:51:16,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 391 events. 252/391 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1528 event pairs, 103 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 806. Up to 282 conditions per place. [2023-11-06 22:51:16,300 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 32 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2023-11-06 22:51:16,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 232 flow [2023-11-06 22:51:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:51:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:51:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-11-06 22:51:16,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43010752688172044 [2023-11-06 22:51:16,304 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-11-06 22:51:16,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-11-06 22:51:16,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:16,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-11-06 22:51:16,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:16,312 INFO L175 Difference]: Start difference. First operand has 39 places, 32 transitions, 125 flow. Second operand 5 states and 600 transitions. [2023-11-06 22:51:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 232 flow [2023-11-06 22:51:16,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:16,315 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 150 flow [2023-11-06 22:51:16,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-11-06 22:51:16,316 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-11-06 22:51:16,316 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 150 flow [2023-11-06 22:51:16,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.0) internal successors, (570), 5 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) [2023-11-06 22:51:16,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:16,317 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 22:51:16,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:16,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:16,531 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:16,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2031245401, now seen corresponding path program 2 times [2023-11-06 22:51:16,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:16,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779063508] [2023-11-06 22:51:16,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:51:16,532 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:16,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:16,533 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:16,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-06 22:51:16,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:51:16,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:51:16,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:51:16,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:16,652 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:51:16,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:16,669 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:16,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:16,686 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:16,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:16,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:16,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:16,731 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:16,745 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:16,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:17,929 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:17,930 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:17,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779063508] [2023-11-06 22:51:17,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779063508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:17,930 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:17,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:51:17,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5588699] [2023-11-06 22:51:17,931 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:17,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:51:17,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:17,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:51:17,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:51:21,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 279 [2023-11-06 22:51:21,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 150 flow. Second operand has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:21,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:21,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 279 [2023-11-06 22:51:21,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:24,757 INFO L124 PetriNetUnfolderBase]: 232/361 cut-off events. [2023-11-06 22:51:24,757 INFO L125 PetriNetUnfolderBase]: For 119/134 co-relation queries the response was YES. [2023-11-06 22:51:24,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 361 events. 232/361 cut-off events. For 119/134 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 1386 event pairs, 127 based on Foata normal form. 21/263 useless extension candidates. Maximal degree in co-relation 932. Up to 348 conditions per place. [2023-11-06 22:51:24,762 INFO L140 encePairwiseOnDemand]: 274/279 looper letters, 23 selfloop transitions, 27 changer transitions 0/52 dead transitions. [2023-11-06 22:51:24,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 52 transitions, 418 flow [2023-11-06 22:51:24,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-06 22:51:24,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-06 22:51:24,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1422 transitions. [2023-11-06 22:51:24,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42473118279569894 [2023-11-06 22:51:24,771 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1422 transitions. [2023-11-06 22:51:24,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1422 transitions. [2023-11-06 22:51:24,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:24,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1422 transitions. [2023-11-06 22:51:24,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.5) internal successors, (1422), 12 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:24,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 279.0) internal successors, (3627), 13 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:24,787 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 279.0) internal successors, (3627), 13 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:24,788 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 150 flow. Second operand 12 states and 1422 transitions. [2023-11-06 22:51:24,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 52 transitions, 418 flow [2023-11-06 22:51:24,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:51:24,792 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 373 flow [2023-11-06 22:51:24,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=373, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2023-11-06 22:51:24,793 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2023-11-06 22:51:24,793 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 373 flow [2023-11-06 22:51:24,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 115.0) internal successors, (1380), 12 states have internal predecessors, (1380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:24,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:24,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 22:51:24,814 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:25,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:25,014 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:25,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:25,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2034960573, now seen corresponding path program 1 times [2023-11-06 22:51:25,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:25,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819203881] [2023-11-06 22:51:25,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:25,015 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:25,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:25,016 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:25,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-06 22:51:25,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:25,109 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 22:51:25,110 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:25,168 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:25,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:25,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819203881] [2023-11-06 22:51:25,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1819203881] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:25,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:25,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:51:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494523760] [2023-11-06 22:51:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:51:25,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:25,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:51:25,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:51:25,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 279 [2023-11-06 22:51:25,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:25,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:25,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 279 [2023-11-06 22:51:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:25,560 INFO L124 PetriNetUnfolderBase]: 152/250 cut-off events. [2023-11-06 22:51:25,560 INFO L125 PetriNetUnfolderBase]: For 79/89 co-relation queries the response was YES. [2023-11-06 22:51:25,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 250 events. 152/250 cut-off events. For 79/89 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 906 event pairs, 81 based on Foata normal form. 17/204 useless extension candidates. Maximal degree in co-relation 640. Up to 246 conditions per place. [2023-11-06 22:51:25,563 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 41 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-06 22:51:25,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 44 transitions, 358 flow [2023-11-06 22:51:25,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:51:25,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:51:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-11-06 22:51:25,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44563918757467147 [2023-11-06 22:51:25,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-11-06 22:51:25,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-11-06 22:51:25,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:25,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-11-06 22:51:25,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:25,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:25,572 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:25,572 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 373 flow. Second operand 3 states and 373 transitions. [2023-11-06 22:51:25,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 44 transitions, 358 flow [2023-11-06 22:51:25,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 44 transitions, 270 flow, removed 27 selfloop flow, removed 8 redundant places. [2023-11-06 22:51:25,576 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 188 flow [2023-11-06 22:51:25,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-06 22:51:25,578 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-11-06 22:51:25,578 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 188 flow [2023-11-06 22:51:25,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:25,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:25,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:25,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-06 22:51:25,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:25,792 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:25,793 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1345107157, now seen corresponding path program 1 times [2023-11-06 22:51:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253663053] [2023-11-06 22:51:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:25,794 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:25,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:25,796 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:25,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-06 22:51:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:25,922 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:51:25,924 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:25,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:51:25,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:25,974 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:25,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:25,993 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:26,001 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:26,002 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:26,030 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:26,031 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:26,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:26,052 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:26,261 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:26,261 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:26,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253663053] [2023-11-06 22:51:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253663053] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:26,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:26,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:51:26,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905502777] [2023-11-06 22:51:26,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:26,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:51:26,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:26,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:51:26,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:51:26,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 279 [2023-11-06 22:51:26,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:26,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:26,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 279 [2023-11-06 22:51:26,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:27,340 INFO L124 PetriNetUnfolderBase]: 192/336 cut-off events. [2023-11-06 22:51:27,341 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-11-06 22:51:27,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 336 events. 192/336 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1312 event pairs, 101 based on Foata normal form. 8/267 useless extension candidates. Maximal degree in co-relation 804. Up to 273 conditions per place. [2023-11-06 22:51:27,345 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 55 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-06 22:51:27,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 351 flow [2023-11-06 22:51:27,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:51:27,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:51:27,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 603 transitions. [2023-11-06 22:51:27,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432258064516129 [2023-11-06 22:51:27,350 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 603 transitions. [2023-11-06 22:51:27,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 603 transitions. [2023-11-06 22:51:27,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:27,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 603 transitions. [2023-11-06 22:51:27,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.6) internal successors, (603), 5 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:27,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:27,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:27,359 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 188 flow. Second operand 5 states and 603 transitions. [2023-11-06 22:51:27,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 351 flow [2023-11-06 22:51:27,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 61 transitions, 350 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:51:27,368 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 220 flow [2023-11-06 22:51:27,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=220, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-11-06 22:51:27,369 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 15 predicate places. [2023-11-06 22:51:27,370 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 220 flow [2023-11-06 22:51:27,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.4) internal successors, (567), 5 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:27,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:27,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:27,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:27,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:27,592 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:27,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:27,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1340734149, now seen corresponding path program 1 times [2023-11-06 22:51:27,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:27,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770592452] [2023-11-06 22:51:27,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:27,593 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:27,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:27,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:27,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-06 22:51:27,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:27,689 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:51:27,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:27,707 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:51:27,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:27,727 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:27,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:27,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:27,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:27,765 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:27,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:27,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:27,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:27,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:27,949 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:51:27,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:27,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770592452] [2023-11-06 22:51:27,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770592452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:51:27,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:51:27,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:51:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694278306] [2023-11-06 22:51:27,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:51:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:51:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:27,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:51:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:51:28,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 279 [2023-11-06 22:51:28,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 220 flow. Second operand has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:28,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:28,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 279 [2023-11-06 22:51:28,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:28,593 INFO L124 PetriNetUnfolderBase]: 212/368 cut-off events. [2023-11-06 22:51:28,593 INFO L125 PetriNetUnfolderBase]: For 208/241 co-relation queries the response was YES. [2023-11-06 22:51:28,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 368 events. 212/368 cut-off events. For 208/241 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1461 event pairs, 100 based on Foata normal form. 33/364 useless extension candidates. Maximal degree in co-relation 1012. Up to 263 conditions per place. [2023-11-06 22:51:28,596 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 42 selfloop transitions, 15 changer transitions 0/59 dead transitions. [2023-11-06 22:51:28,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 59 transitions, 385 flow [2023-11-06 22:51:28,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:51:28,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:51:28,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 597 transitions. [2023-11-06 22:51:28,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42795698924731185 [2023-11-06 22:51:28,600 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 597 transitions. [2023-11-06 22:51:28,600 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 597 transitions. [2023-11-06 22:51:28,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:28,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 597 transitions. [2023-11-06 22:51:28,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:28,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:28,606 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:28,606 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 220 flow. Second operand 5 states and 597 transitions. [2023-11-06 22:51:28,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 59 transitions, 385 flow [2023-11-06 22:51:28,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 59 transitions, 380 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:51:28,610 INFO L231 Difference]: Finished difference. Result has 56 places, 48 transitions, 258 flow [2023-11-06 22:51:28,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=258, PETRI_PLACES=56, PETRI_TRANSITIONS=48} [2023-11-06 22:51:28,611 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 18 predicate places. [2023-11-06 22:51:28,611 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 48 transitions, 258 flow [2023-11-06 22:51:28,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:28,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:28,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:28,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-06 22:51:28,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:28,823 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:28,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2072456306, now seen corresponding path program 1 times [2023-11-06 22:51:28,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:28,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046942630] [2023-11-06 22:51:28,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:28,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:28,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:28,825 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:28,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-06 22:51:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:28,934 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:51:28,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:28,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:51:28,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:28,964 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:28,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:28,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:28,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:28,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:29,003 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:29,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:29,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:29,014 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:29,224 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:29,224 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:29,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:29,859 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:29,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046942630] [2023-11-06 22:51:29,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046942630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:29,860 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:29,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:51:29,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020927734] [2023-11-06 22:51:29,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:29,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:51:29,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:29,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:51:29,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:51:33,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 279 [2023-11-06 22:51:33,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 48 transitions, 258 flow. Second operand has 12 states, 12 states have (on average 111.33333333333333) internal successors, (1336), 12 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:33,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:33,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 279 [2023-11-06 22:51:33,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:35,727 INFO L124 PetriNetUnfolderBase]: 397/657 cut-off events. [2023-11-06 22:51:35,728 INFO L125 PetriNetUnfolderBase]: For 396/434 co-relation queries the response was YES. [2023-11-06 22:51:35,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 657 events. 397/657 cut-off events. For 396/434 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2595 event pairs, 70 based on Foata normal form. 46/657 useless extension candidates. Maximal degree in co-relation 2043. Up to 205 conditions per place. [2023-11-06 22:51:35,736 INFO L140 encePairwiseOnDemand]: 271/279 looper letters, 89 selfloop transitions, 26 changer transitions 0/116 dead transitions. [2023-11-06 22:51:35,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 116 transitions, 748 flow [2023-11-06 22:51:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:51:35,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:51:35,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1183 transitions. [2023-11-06 22:51:35,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42401433691756274 [2023-11-06 22:51:35,744 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1183 transitions. [2023-11-06 22:51:35,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1183 transitions. [2023-11-06 22:51:35,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:35,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1183 transitions. [2023-11-06 22:51:35,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.3) internal successors, (1183), 10 states have internal predecessors, (1183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:35,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:35,757 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:35,758 INFO L175 Difference]: Start difference. First operand has 56 places, 48 transitions, 258 flow. Second operand 10 states and 1183 transitions. [2023-11-06 22:51:35,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 116 transitions, 748 flow [2023-11-06 22:51:35,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 116 transitions, 709 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:51:35,764 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 364 flow [2023-11-06 22:51:35,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=231, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=364, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-06 22:51:35,765 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-11-06 22:51:35,765 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 364 flow [2023-11-06 22:51:35,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.33333333333333) internal successors, (1336), 12 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:35,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:35,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:51:35,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:35,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:35,992 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:35,992 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:35,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1141828053, now seen corresponding path program 1 times [2023-11-06 22:51:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [700686641] [2023-11-06 22:51:35,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:51:35,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:35,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:35,995 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:36,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-06 22:51:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:51:36,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:51:36,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:36,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:51:36,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:36,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:36,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:36,202 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:36,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:36,211 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:36,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:36,222 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:36,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:36,236 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:36,515 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:36,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:37,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:51:37,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:37,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [700686641] [2023-11-06 22:51:37,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [700686641] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:37,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:37,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 22:51:37,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203274080] [2023-11-06 22:51:37,307 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:37,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:51:37,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:37,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:51:37,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:51:40,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 279 [2023-11-06 22:51:40,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 364 flow. Second operand has 12 states, 12 states have (on average 111.66666666666667) internal successors, (1340), 12 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:40,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:51:40,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 279 [2023-11-06 22:51:40,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:51:42,553 INFO L124 PetriNetUnfolderBase]: 826/1318 cut-off events. [2023-11-06 22:51:42,553 INFO L125 PetriNetUnfolderBase]: For 2958/3096 co-relation queries the response was YES. [2023-11-06 22:51:42,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5106 conditions, 1318 events. 826/1318 cut-off events. For 2958/3096 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5432 event pairs, 153 based on Foata normal form. 144/1430 useless extension candidates. Maximal degree in co-relation 5078. Up to 426 conditions per place. [2023-11-06 22:51:42,565 INFO L140 encePairwiseOnDemand]: 271/279 looper letters, 140 selfloop transitions, 28 changer transitions 0/170 dead transitions. [2023-11-06 22:51:42,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 170 transitions, 1477 flow [2023-11-06 22:51:42,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:51:42,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-06 22:51:42,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1181 transitions. [2023-11-06 22:51:42,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42329749103942654 [2023-11-06 22:51:42,588 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1181 transitions. [2023-11-06 22:51:42,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1181 transitions. [2023-11-06 22:51:42,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:51:42,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1181 transitions. [2023-11-06 22:51:42,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 118.1) internal successors, (1181), 10 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,599 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 279.0) internal successors, (3069), 11 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,599 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 364 flow. Second operand 10 states and 1181 transitions. [2023-11-06 22:51:42,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 170 transitions, 1477 flow [2023-11-06 22:51:42,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 170 transitions, 1351 flow, removed 47 selfloop flow, removed 3 redundant places. [2023-11-06 22:51:42,608 INFO L231 Difference]: Finished difference. Result has 78 places, 68 transitions, 518 flow [2023-11-06 22:51:42,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=518, PETRI_PLACES=78, PETRI_TRANSITIONS=68} [2023-11-06 22:51:42,609 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 40 predicate places. [2023-11-06 22:51:42,609 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 68 transitions, 518 flow [2023-11-06 22:51:42,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 111.66666666666667) internal successors, (1340), 12 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:51:42,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:51:42,610 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1] [2023-11-06 22:51:42,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-06 22:51:42,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:42,823 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:51:42,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:51:42,823 INFO L85 PathProgramCache]: Analyzing trace with hash -425863367, now seen corresponding path program 3 times [2023-11-06 22:51:42,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:51:42,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93556046] [2023-11-06 22:51:42,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:51:42,824 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:51:42,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:51:42,825 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:51:42,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-06 22:51:43,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:51:43,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:51:43,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:51:43,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:51:43,055 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:51:43,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:43,075 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:43,103 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:43,104 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:51:43,117 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:43,118 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:43,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:43,131 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:51:43,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:51:43,139 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:51:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:43,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:51:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:51:46,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:51:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93556046] [2023-11-06 22:51:46,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93556046] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:51:46,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:51:46,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2023-11-06 22:51:46,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205426249] [2023-11-06 22:51:46,883 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:51:46,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-06 22:51:46,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:51:46,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-06 22:51:46,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=386, Unknown=0, NotChecked=0, Total=552 [2023-11-06 22:52:03,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 279 [2023-11-06 22:52:03,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 68 transitions, 518 flow. Second operand has 24 states, 24 states have (on average 115.0) internal successors, (2760), 24 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:03,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:03,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 279 [2023-11-06 22:52:03,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:24,714 INFO L124 PetriNetUnfolderBase]: 796/1276 cut-off events. [2023-11-06 22:52:24,714 INFO L125 PetriNetUnfolderBase]: For 4960/5173 co-relation queries the response was YES. [2023-11-06 22:52:24,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5964 conditions, 1276 events. 796/1276 cut-off events. For 4960/5173 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 5157 event pairs, 490 based on Foata normal form. 214/1488 useless extension candidates. Maximal degree in co-relation 5931. Up to 1235 conditions per place. [2023-11-06 22:52:24,729 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 44 selfloop transitions, 45 changer transitions 0/92 dead transitions. [2023-11-06 22:52:24,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 92 transitions, 900 flow [2023-11-06 22:52:24,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:52:24,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-06 22:52:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2812 transitions. [2023-11-06 22:52:24,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4199522102747909 [2023-11-06 22:52:24,742 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2812 transitions. [2023-11-06 22:52:24,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2812 transitions. [2023-11-06 22:52:24,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:24,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2812 transitions. [2023-11-06 22:52:24,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.16666666666667) internal successors, (2812), 24 states have internal predecessors, (2812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:24,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 279.0) internal successors, (6975), 25 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:24,772 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 279.0) internal successors, (6975), 25 states have internal predecessors, (6975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:24,772 INFO L175 Difference]: Start difference. First operand has 78 places, 68 transitions, 518 flow. Second operand 24 states and 2812 transitions. [2023-11-06 22:52:24,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 92 transitions, 900 flow [2023-11-06 22:52:24,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 92 transitions, 860 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-06 22:52:24,787 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 836 flow [2023-11-06 22:52:24,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=836, PETRI_PLACES=110, PETRI_TRANSITIONS=92} [2023-11-06 22:52:24,788 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 72 predicate places. [2023-11-06 22:52:24,789 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 836 flow [2023-11-06 22:52:24,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 115.0) internal successors, (2760), 24 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:24,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:24,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:24,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:25,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:52:25,007 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:52:25,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:25,007 INFO L85 PathProgramCache]: Analyzing trace with hash 170364285, now seen corresponding path program 1 times [2023-11-06 22:52:25,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:52:25,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1588838801] [2023-11-06 22:52:25,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:25,008 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:52:25,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:52:25,009 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:52:25,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-06 22:52:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:25,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-06 22:52:25,122 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:25,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:25,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:52:25,157 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:52:25,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1588838801] [2023-11-06 22:52:25,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1588838801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:25,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:25,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:52:25,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260033979] [2023-11-06 22:52:25,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:25,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:25,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:52:25,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:25,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:25,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 279 [2023-11-06 22:52:25,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 836 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:25,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:25,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 279 [2023-11-06 22:52:25,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:25,856 INFO L124 PetriNetUnfolderBase]: 809/1307 cut-off events. [2023-11-06 22:52:25,856 INFO L125 PetriNetUnfolderBase]: For 4723/4960 co-relation queries the response was YES. [2023-11-06 22:52:25,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5990 conditions, 1307 events. 809/1307 cut-off events. For 4723/4960 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 5423 event pairs, 205 based on Foata normal form. 228/1533 useless extension candidates. Maximal degree in co-relation 5945. Up to 1149 conditions per place. [2023-11-06 22:52:25,877 INFO L140 encePairwiseOnDemand]: 275/279 looper letters, 97 selfloop transitions, 3 changer transitions 4/106 dead transitions. [2023-11-06 22:52:25,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 106 transitions, 1125 flow [2023-11-06 22:52:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:52:25,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-06 22:52:25,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48028673835125446 [2023-11-06 22:52:25,881 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-06 22:52:25,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-06 22:52:25,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:25,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-06 22:52:25,883 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:25,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:25,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:25,886 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 836 flow. Second operand 3 states and 402 transitions. [2023-11-06 22:52:25,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 106 transitions, 1125 flow [2023-11-06 22:52:25,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 106 transitions, 983 flow, removed 50 selfloop flow, removed 11 redundant places. [2023-11-06 22:52:25,934 INFO L231 Difference]: Finished difference. Result has 102 places, 91 transitions, 689 flow [2023-11-06 22:52:25,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=694, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=689, PETRI_PLACES=102, PETRI_TRANSITIONS=91} [2023-11-06 22:52:25,935 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 64 predicate places. [2023-11-06 22:52:25,935 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 91 transitions, 689 flow [2023-11-06 22:52:25,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:25,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:25,936 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:25,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2023-11-06 22:52:26,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:52:26,136 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:52:26,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 434452442, now seen corresponding path program 2 times [2023-11-06 22:52:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:52:26,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779318039] [2023-11-06 22:52:26,138 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:52:26,138 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:52:26,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:52:26,139 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:52:26,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-06 22:52:26,348 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:52:26,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:52:26,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:52:26,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:26,384 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:52:26,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:26,406 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:52:26,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:26,440 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:52:26,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:26,456 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:52:26,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:26,471 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:52:26,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:26,487 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:52:27,020 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:27,020 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:28,801 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:52:28,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779318039] [2023-11-06 22:52:28,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779318039] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:28,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:52:28,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-06 22:52:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429494346] [2023-11-06 22:52:28,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:52:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:52:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:52:28,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:52:39,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 279 [2023-11-06 22:52:39,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 91 transitions, 689 flow. Second operand has 18 states, 18 states have (on average 109.55555555555556) internal successors, (1972), 18 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:39,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:52:39,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 279 [2023-11-06 22:52:39,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:52:46,778 INFO L124 PetriNetUnfolderBase]: 2083/3333 cut-off events. [2023-11-06 22:52:46,778 INFO L125 PetriNetUnfolderBase]: For 11489/11717 co-relation queries the response was YES. [2023-11-06 22:52:46,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15186 conditions, 3333 events. 2083/3333 cut-off events. For 11489/11717 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 16879 event pairs, 571 based on Foata normal form. 282/3615 useless extension candidates. Maximal degree in co-relation 15140. Up to 991 conditions per place. [2023-11-06 22:52:46,818 INFO L140 encePairwiseOnDemand]: 269/279 looper letters, 327 selfloop transitions, 53 changer transitions 0/381 dead transitions. [2023-11-06 22:52:46,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 381 transitions, 3432 flow [2023-11-06 22:52:46,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:52:46,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:52:46,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2438 transitions. [2023-11-06 22:52:46,825 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4161119644990613 [2023-11-06 22:52:46,825 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2438 transitions. [2023-11-06 22:52:46,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2438 transitions. [2023-11-06 22:52:46,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:52:46,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2438 transitions. [2023-11-06 22:52:46,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 116.0952380952381) internal successors, (2438), 21 states have internal predecessors, (2438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:46,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 279.0) internal successors, (6138), 22 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:46,842 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 279.0) internal successors, (6138), 22 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:46,842 INFO L175 Difference]: Start difference. First operand has 102 places, 91 transitions, 689 flow. Second operand 21 states and 2438 transitions. [2023-11-06 22:52:46,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 381 transitions, 3432 flow [2023-11-06 22:52:46,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 381 transitions, 3290 flow, removed 65 selfloop flow, removed 2 redundant places. [2023-11-06 22:52:46,872 INFO L231 Difference]: Finished difference. Result has 122 places, 127 transitions, 1109 flow [2023-11-06 22:52:46,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=666, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1109, PETRI_PLACES=122, PETRI_TRANSITIONS=127} [2023-11-06 22:52:46,873 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 84 predicate places. [2023-11-06 22:52:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 127 transitions, 1109 flow [2023-11-06 22:52:46,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 109.55555555555556) internal successors, (1972), 18 states have internal predecessors, (1972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:52:46,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:52:46,874 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:46,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:47,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:52:47,088 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:52:47,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1025348602, now seen corresponding path program 2 times [2023-11-06 22:52:47,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:52:47,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1157967121] [2023-11-06 22:52:47,088 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:52:47,089 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:52:47,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:52:47,089 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:52:47,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-06 22:52:47,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:52:47,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:52:47,348 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:52:47,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:47,367 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:52:47,376 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:47,377 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:52:47,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:47,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:52:47,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:47,411 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:52:47,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:47,429 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:52:47,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:52:47,437 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:52:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:47,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:49,411 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:52:49,411 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:52:49,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1157967121] [2023-11-06 22:52:49,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1157967121] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:49,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:52:49,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 17 [2023-11-06 22:52:49,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546676689] [2023-11-06 22:52:49,412 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:49,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:52:49,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:52:49,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:52:49,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:53:02,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 279 [2023-11-06 22:53:02,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 127 transitions, 1109 flow. Second operand has 18 states, 18 states have (on average 109.77777777777777) internal successors, (1976), 18 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:02,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:02,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 279 [2023-11-06 22:53:02,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:10,528 INFO L124 PetriNetUnfolderBase]: 2047/3256 cut-off events. [2023-11-06 22:53:10,529 INFO L125 PetriNetUnfolderBase]: For 12967/13251 co-relation queries the response was YES. [2023-11-06 22:53:10,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15502 conditions, 3256 events. 2047/3256 cut-off events. For 12967/13251 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16163 event pairs, 615 based on Foata normal form. 248/3504 useless extension candidates. Maximal degree in co-relation 15452. Up to 937 conditions per place. [2023-11-06 22:53:10,563 INFO L140 encePairwiseOnDemand]: 269/279 looper letters, 358 selfloop transitions, 51 changer transitions 0/412 dead transitions. [2023-11-06 22:53:10,563 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 412 transitions, 4294 flow [2023-11-06 22:53:10,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:53:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-06 22:53:10,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2434 transitions. [2023-11-06 22:53:10,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41542925413893156 [2023-11-06 22:53:10,576 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2434 transitions. [2023-11-06 22:53:10,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2434 transitions. [2023-11-06 22:53:10,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:10,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2434 transitions. [2023-11-06 22:53:10,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 115.9047619047619) internal successors, (2434), 21 states have internal predecessors, (2434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:10,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 279.0) internal successors, (6138), 22 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:10,595 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 279.0) internal successors, (6138), 22 states have internal predecessors, (6138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:10,595 INFO L175 Difference]: Start difference. First operand has 122 places, 127 transitions, 1109 flow. Second operand 21 states and 2434 transitions. [2023-11-06 22:53:10,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 412 transitions, 4294 flow [2023-11-06 22:53:10,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 412 transitions, 4152 flow, removed 65 selfloop flow, removed 4 redundant places. [2023-11-06 22:53:10,653 INFO L231 Difference]: Finished difference. Result has 141 places, 157 transitions, 1433 flow [2023-11-06 22:53:10,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1039, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1433, PETRI_PLACES=141, PETRI_TRANSITIONS=157} [2023-11-06 22:53:10,654 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 103 predicate places. [2023-11-06 22:53:10,654 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 157 transitions, 1433 flow [2023-11-06 22:53:10,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 109.77777777777777) internal successors, (1976), 18 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:10,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:10,656 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1] [2023-11-06 22:53:10,678 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:10,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:10,878 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:53:10,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:10,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1190208411, now seen corresponding path program 3 times [2023-11-06 22:53:10,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:53:10,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915970954] [2023-11-06 22:53:10,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:53:10,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:53:10,880 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:53:10,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-06 22:53:11,286 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:53:11,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:53:11,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:53:11,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:11,337 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:53:11,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:11,379 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:11,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:11,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:11,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:11,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:11,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:11,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:11,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:11,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:11,533 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-06 22:53:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:53:11,767 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:12,165 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:53:12,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:53:12,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915970954] [2023-11-06 22:53:12,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915970954] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:12,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:53:12,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:53:12,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640952350] [2023-11-06 22:53:12,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:12,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:53:12,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:53:12,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:53:12,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:53:15,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 279 [2023-11-06 22:53:15,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 157 transitions, 1433 flow. Second operand has 16 states, 16 states have (on average 107.5625) internal successors, (1721), 16 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:15,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:15,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 279 [2023-11-06 22:53:15,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:18,736 INFO L124 PetriNetUnfolderBase]: 2474/3968 cut-off events. [2023-11-06 22:53:18,736 INFO L125 PetriNetUnfolderBase]: For 16065/16389 co-relation queries the response was YES. [2023-11-06 22:53:18,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20421 conditions, 3968 events. 2474/3968 cut-off events. For 16065/16389 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 20430 event pairs, 1293 based on Foata normal form. 345/4304 useless extension candidates. Maximal degree in co-relation 20367. Up to 3002 conditions per place. [2023-11-06 22:53:18,799 INFO L140 encePairwiseOnDemand]: 271/279 looper letters, 271 selfloop transitions, 17 changer transitions 0/291 dead transitions. [2023-11-06 22:53:18,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 291 transitions, 3133 flow [2023-11-06 22:53:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:53:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:53:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1474 transitions. [2023-11-06 22:53:18,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40639647091259995 [2023-11-06 22:53:18,806 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1474 transitions. [2023-11-06 22:53:18,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1474 transitions. [2023-11-06 22:53:18,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:18,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1474 transitions. [2023-11-06 22:53:18,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.38461538461539) internal successors, (1474), 13 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:18,819 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:18,820 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:18,821 INFO L175 Difference]: Start difference. First operand has 141 places, 157 transitions, 1433 flow. Second operand 13 states and 1474 transitions. [2023-11-06 22:53:18,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 291 transitions, 3133 flow [2023-11-06 22:53:18,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 291 transitions, 3018 flow, removed 49 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:18,916 INFO L231 Difference]: Finished difference. Result has 152 places, 162 transitions, 1490 flow [2023-11-06 22:53:18,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1490, PETRI_PLACES=152, PETRI_TRANSITIONS=162} [2023-11-06 22:53:18,918 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 114 predicate places. [2023-11-06 22:53:18,918 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 162 transitions, 1490 flow [2023-11-06 22:53:18,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 107.5625) internal successors, (1721), 16 states have internal predecessors, (1721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:18,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:18,919 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1] [2023-11-06 22:53:18,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:19,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:19,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:53:19,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1608927625, now seen corresponding path program 4 times [2023-11-06 22:53:19,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:53:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696134247] [2023-11-06 22:53:19,141 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:53:19,141 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:19,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:53:19,143 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:53:19,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-06 22:53:19,343 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:53:19,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:53:19,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:53:19,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:19,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 22:53:19,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:19,382 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:19,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:19,402 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:53:19,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:19,413 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:19,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:19,421 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:19,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:19,431 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:19,890 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:53:19,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:21,548 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:53:21,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:53:21,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696134247] [2023-11-06 22:53:21,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696134247] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:21,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:53:21,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-11-06 22:53:21,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469111753] [2023-11-06 22:53:21,549 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:21,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:53:21,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:53:21,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:53:21,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:53:30,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 279 [2023-11-06 22:53:30,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 162 transitions, 1490 flow. Second operand has 18 states, 18 states have (on average 111.55555555555556) internal successors, (2008), 18 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:30,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:30,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 279 [2023-11-06 22:53:30,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:41,043 INFO L124 PetriNetUnfolderBase]: 4050/6343 cut-off events. [2023-11-06 22:53:41,043 INFO L125 PetriNetUnfolderBase]: For 27558/28076 co-relation queries the response was YES. [2023-11-06 22:53:41,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32895 conditions, 6343 events. 4050/6343 cut-off events. For 27558/28076 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 32555 event pairs, 356 based on Foata normal form. 714/7051 useless extension candidates. Maximal degree in co-relation 32837. Up to 1721 conditions per place. [2023-11-06 22:53:41,119 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 539 selfloop transitions, 80 changer transitions 0/622 dead transitions. [2023-11-06 22:53:41,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 622 transitions, 6788 flow [2023-11-06 22:53:41,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:53:41,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:53:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1904 transitions. [2023-11-06 22:53:41,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265232974910394 [2023-11-06 22:53:41,125 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1904 transitions. [2023-11-06 22:53:41,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1904 transitions. [2023-11-06 22:53:41,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:41,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1904 transitions. [2023-11-06 22:53:41,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 119.0) internal successors, (1904), 16 states have internal predecessors, (1904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 279.0) internal successors, (4743), 17 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,137 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 279.0) internal successors, (4743), 17 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,137 INFO L175 Difference]: Start difference. First operand has 152 places, 162 transitions, 1490 flow. Second operand 16 states and 1904 transitions. [2023-11-06 22:53:41,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 622 transitions, 6788 flow [2023-11-06 22:53:41,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 622 transitions, 6766 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:53:41,249 INFO L231 Difference]: Finished difference. Result has 168 places, 185 transitions, 1946 flow [2023-11-06 22:53:41,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1468, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1946, PETRI_PLACES=168, PETRI_TRANSITIONS=185} [2023-11-06 22:53:41,250 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 130 predicate places. [2023-11-06 22:53:41,250 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 185 transitions, 1946 flow [2023-11-06 22:53:41,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.55555555555556) internal successors, (2008), 18 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:41,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:41,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:41,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:41,466 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:53:41,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:41,466 INFO L85 PathProgramCache]: Analyzing trace with hash -844402994, now seen corresponding path program 1 times [2023-11-06 22:53:41,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:53:41,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823260287] [2023-11-06 22:53:41,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:41,467 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:41,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:53:41,468 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:53:41,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-06 22:53:41,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:41,590 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:53:41,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:41,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:53:41,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:53:41,720 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:53:41,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823260287] [2023-11-06 22:53:41,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823260287] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:41,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:53:41,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-11-06 22:53:41,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57099780] [2023-11-06 22:53:41,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:41,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:41,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:53:41,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:41,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:53:41,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 279 [2023-11-06 22:53:41,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 185 transitions, 1946 flow. Second operand has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:41,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:41,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 279 [2023-11-06 22:53:41,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:43,415 INFO L124 PetriNetUnfolderBase]: 3946/6236 cut-off events. [2023-11-06 22:53:43,415 INFO L125 PetriNetUnfolderBase]: For 40275/40687 co-relation queries the response was YES. [2023-11-06 22:53:43,457 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35556 conditions, 6236 events. 3946/6236 cut-off events. For 40275/40687 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 31942 event pairs, 1336 based on Foata normal form. 470/6699 useless extension candidates. Maximal degree in co-relation 35490. Up to 3312 conditions per place. [2023-11-06 22:53:43,481 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 210 selfloop transitions, 33 changer transitions 0/247 dead transitions. [2023-11-06 22:53:43,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 247 transitions, 3181 flow [2023-11-06 22:53:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:53:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-11-06 22:53:43,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42007168458781363 [2023-11-06 22:53:43,484 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-11-06 22:53:43,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-11-06 22:53:43,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:43,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-11-06 22:53:43,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:43,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:43,487 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 279.0) internal successors, (1674), 6 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:43,487 INFO L175 Difference]: Start difference. First operand has 168 places, 185 transitions, 1946 flow. Second operand 5 states and 586 transitions. [2023-11-06 22:53:43,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 247 transitions, 3181 flow [2023-11-06 22:53:43,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 247 transitions, 3053 flow, removed 18 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:43,627 INFO L231 Difference]: Finished difference. Result has 168 places, 183 transitions, 1953 flow [2023-11-06 22:53:43,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1953, PETRI_PLACES=168, PETRI_TRANSITIONS=183} [2023-11-06 22:53:43,628 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 130 predicate places. [2023-11-06 22:53:43,629 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 183 transitions, 1953 flow [2023-11-06 22:53:43,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 114.2) internal successors, (571), 5 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:43,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:43,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:43,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:43,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:43,841 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:53:43,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:43,842 INFO L85 PathProgramCache]: Analyzing trace with hash 907118427, now seen corresponding path program 1 times [2023-11-06 22:53:43,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:53:43,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665244447] [2023-11-06 22:53:43,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:43,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:43,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:53:43,843 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:53:43,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2023-11-06 22:53:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:43,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 22:53:43,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:44,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:44,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:53:44,227 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:53:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665244447] [2023-11-06 22:53:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665244447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:44,227 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:53:44,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2023-11-06 22:53:44,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990576778] [2023-11-06 22:53:44,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:44,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:53:44,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:53:44,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:53:44,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:53:44,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 279 [2023-11-06 22:53:44,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 183 transitions, 1953 flow. Second operand has 10 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:44,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:44,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 279 [2023-11-06 22:53:44,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:46,445 INFO L124 PetriNetUnfolderBase]: 3795/6021 cut-off events. [2023-11-06 22:53:46,445 INFO L125 PetriNetUnfolderBase]: For 42891/43366 co-relation queries the response was YES. [2023-11-06 22:53:46,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36043 conditions, 6021 events. 3795/6021 cut-off events. For 42891/43366 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 31117 event pairs, 1359 based on Foata normal form. 458/6478 useless extension candidates. Maximal degree in co-relation 35976. Up to 3378 conditions per place. [2023-11-06 22:53:46,523 INFO L140 encePairwiseOnDemand]: 271/279 looper letters, 171 selfloop transitions, 56 changer transitions 0/230 dead transitions. [2023-11-06 22:53:46,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 230 transitions, 2820 flow [2023-11-06 22:53:46,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:53:46,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:53:46,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 943 transitions. [2023-11-06 22:53:46,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224910394265233 [2023-11-06 22:53:46,527 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 943 transitions. [2023-11-06 22:53:46,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 943 transitions. [2023-11-06 22:53:46,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:46,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 943 transitions. [2023-11-06 22:53:46,530 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.875) internal successors, (943), 8 states have internal predecessors, (943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:46,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 279.0) internal successors, (2511), 9 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:46,534 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 279.0) internal successors, (2511), 9 states have internal predecessors, (2511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:46,534 INFO L175 Difference]: Start difference. First operand has 168 places, 183 transitions, 1953 flow. Second operand 8 states and 943 transitions. [2023-11-06 22:53:46,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 230 transitions, 2820 flow [2023-11-06 22:53:46,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 230 transitions, 2766 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:53:46,678 INFO L231 Difference]: Finished difference. Result has 173 places, 181 transitions, 2068 flow [2023-11-06 22:53:46,678 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2068, PETRI_PLACES=173, PETRI_TRANSITIONS=181} [2023-11-06 22:53:46,679 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 135 predicate places. [2023-11-06 22:53:46,679 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 181 transitions, 2068 flow [2023-11-06 22:53:46,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:46,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:46,680 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:46,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:46,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:46,892 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:53:46,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:46,892 INFO L85 PathProgramCache]: Analyzing trace with hash 131151086, now seen corresponding path program 3 times [2023-11-06 22:53:46,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:53:46,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126697336] [2023-11-06 22:53:46,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:53:46,893 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:53:46,894 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:53:46,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2023-11-06 22:53:47,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-06 22:53:47,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:53:47,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:53:47,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:47,205 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2023-11-06 22:53:47,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:47,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:47,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:47,249 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-06 22:53:47,258 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:47,259 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:47,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:47,266 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:47,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:47,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:47,888 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:53:47,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:48,469 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:53:48,469 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:53:48,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126697336] [2023-11-06 22:53:48,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126697336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:48,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:53:48,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-06 22:53:48,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004584626] [2023-11-06 22:53:48,470 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:48,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 22:53:48,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:53:48,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 22:53:48,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:53:52,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 279 [2023-11-06 22:53:52,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 181 transitions, 2068 flow. Second operand has 16 states, 16 states have (on average 108.8125) internal successors, (1741), 16 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:52,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:53:52,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 279 [2023-11-06 22:53:52,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:53:56,810 INFO L124 PetriNetUnfolderBase]: 3628/5758 cut-off events. [2023-11-06 22:53:56,810 INFO L125 PetriNetUnfolderBase]: For 37485/37854 co-relation queries the response was YES. [2023-11-06 22:53:56,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35813 conditions, 5758 events. 3628/5758 cut-off events. For 37485/37854 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 28417 event pairs, 2279 based on Foata normal form. 299/6056 useless extension candidates. Maximal degree in co-relation 35745. Up to 5248 conditions per place. [2023-11-06 22:53:56,908 INFO L140 encePairwiseOnDemand]: 271/279 looper letters, 233 selfloop transitions, 17 changer transitions 0/254 dead transitions. [2023-11-06 22:53:56,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 254 transitions, 3126 flow [2023-11-06 22:53:56,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 22:53:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-06 22:53:56,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1481 transitions. [2023-11-06 22:53:56,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4083264405845051 [2023-11-06 22:53:56,913 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1481 transitions. [2023-11-06 22:53:56,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1481 transitions. [2023-11-06 22:53:56,913 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:53:56,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1481 transitions. [2023-11-06 22:53:56,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.92307692307692) internal successors, (1481), 13 states have internal predecessors, (1481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:56,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:56,922 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 279.0) internal successors, (3906), 14 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:56,922 INFO L175 Difference]: Start difference. First operand has 173 places, 181 transitions, 2068 flow. Second operand 13 states and 1481 transitions. [2023-11-06 22:53:56,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 254 transitions, 3126 flow [2023-11-06 22:53:57,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 254 transitions, 3107 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-11-06 22:53:57,028 INFO L231 Difference]: Finished difference. Result has 184 places, 187 transitions, 2178 flow [2023-11-06 22:53:57,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2178, PETRI_PLACES=184, PETRI_TRANSITIONS=187} [2023-11-06 22:53:57,029 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 146 predicate places. [2023-11-06 22:53:57,029 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 187 transitions, 2178 flow [2023-11-06 22:53:57,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 108.8125) internal successors, (1741), 16 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:53:57,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:53:57,030 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:57,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:57,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:57,239 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:53:57,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:57,239 INFO L85 PathProgramCache]: Analyzing trace with hash 137158487, now seen corresponding path program 4 times [2023-11-06 22:53:57,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:53:57,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775260637] [2023-11-06 22:53:57,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:53:57,240 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:53:57,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:53:57,241 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:53:57,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2023-11-06 22:53:57,418 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:53:57,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:53:57,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:53:57,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:57,454 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-06 22:53:57,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:57,490 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:57,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:57,502 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:57,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:57,516 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:57,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:57,525 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 22:53:57,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 22:53:57,537 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 22:53:58,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:53:58,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:54:00,206 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:54:00,206 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 22:54:00,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775260637] [2023-11-06 22:54:00,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775260637] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:54:00,207 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 22:54:00,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16 [2023-11-06 22:54:00,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736519702] [2023-11-06 22:54:00,207 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 22:54:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:54:00,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 22:54:00,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:54:00,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:54:09,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 279 [2023-11-06 22:54:09,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 187 transitions, 2178 flow. Second operand has 18 states, 18 states have (on average 111.77777777777777) internal successors, (2012), 18 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:09,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:54:09,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 279 [2023-11-06 22:54:09,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:54:20,294 INFO L124 PetriNetUnfolderBase]: 6524/10080 cut-off events. [2023-11-06 22:54:20,295 INFO L125 PetriNetUnfolderBase]: For 90011/90583 co-relation queries the response was YES. [2023-11-06 22:54:20,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63550 conditions, 10080 events. 6524/10080 cut-off events. For 90011/90583 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 52047 event pairs, 636 based on Foata normal form. 1052/11128 useless extension candidates. Maximal degree in co-relation 63478. Up to 2517 conditions per place. [2023-11-06 22:54:20,454 INFO L140 encePairwiseOnDemand]: 272/279 looper letters, 795 selfloop transitions, 78 changer transitions 0/877 dead transitions. [2023-11-06 22:54:20,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 877 transitions, 12851 flow [2023-11-06 22:54:20,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:54:20,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 22:54:20,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1901 transitions. [2023-11-06 22:54:20,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4258512544802867 [2023-11-06 22:54:20,458 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1901 transitions. [2023-11-06 22:54:20,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1901 transitions. [2023-11-06 22:54:20,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:54:20,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1901 transitions. [2023-11-06 22:54:20,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 118.8125) internal successors, (1901), 16 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:20,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 279.0) internal successors, (4743), 17 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:20,464 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 279.0) internal successors, (4743), 17 states have internal predecessors, (4743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:20,464 INFO L175 Difference]: Start difference. First operand has 184 places, 187 transitions, 2178 flow. Second operand 16 states and 1901 transitions. [2023-11-06 22:54:20,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 877 transitions, 12851 flow [2023-11-06 22:54:20,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 877 transitions, 12831 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-06 22:54:20,629 INFO L231 Difference]: Finished difference. Result has 200 places, 210 transitions, 2666 flow [2023-11-06 22:54:20,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2666, PETRI_PLACES=200, PETRI_TRANSITIONS=210} [2023-11-06 22:54:20,630 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 162 predicate places. [2023-11-06 22:54:20,630 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 210 transitions, 2666 flow [2023-11-06 22:54:20,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 111.77777777777777) internal successors, (2012), 18 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:54:20,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:54:20,630 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:54:20,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2023-11-06 22:54:20,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:54:20,831 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-06 22:54:20,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:54:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash -15009859, now seen corresponding path program 1 times [2023-11-06 22:54:20,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 22:54:20,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258490378] [2023-11-06 22:54:20,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:54:20,832 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 22:54:20,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 22:54:20,834 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-06 22:54:20,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3df872aa-695c-4ff0-a959-4d82e256d4e6/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2023-11-06 22:54:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:54:21,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 22:54:21,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:54:21,067 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 24 [2023-11-06 22:54:21,223 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 23 [2023-11-06 22:54:21,346 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:54:21,346 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 126 treesize of output 46 [2023-11-06 22:54:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:54:21,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:54:22,134 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv3 32) c_~A~0.offset)) (.cse3 (bvadd (_ bv2 32) c_~A~0.offset)) (.cse4 (bvadd c_~A~0.offset (_ bv1 32)))) (and (forall ((v_ArrVal_545 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse0 (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_545) c_~A~0.base))) (concat (concat (concat (select .cse1 .cse2) (select .cse1 .cse3)) (select .cse1 .cse4)) (select .cse1 c_~A~0.offset))))) (or (not (bvsle |c_thread1Thread1of1ForFork1_~tmp~0#1| (bvadd .cse0 (_ bv2147483647 32)))) (= (bvadd (bvneg .cse0) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))) (forall ((v_ArrVal_545 (Array (_ BitVec 32) (_ BitVec 8)))) (let ((.cse5 (let ((.cse6 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_545) c_~A~0.base))) (concat (concat (concat (select .cse6 .cse2) (select .cse6 .cse3)) (select .cse6 .cse4)) (select .cse6 c_~A~0.offset))))) (or (not (bvsge .cse5 (_ bv0 32))) (= (bvadd (bvneg .cse5) |c_thread1Thread1of1ForFork1_~tmp~0#1|) (_ bv0 32))))))) is different from false [2023-11-06 22:54:22,396 INFO L322 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2023-11-06 22:54:22,397 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 310 treesize of output 166 [2023-11-06 22:54:22,426 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:54:22,426 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 74 [2023-11-06 22:54:26,251 INFO L322 Elim1Store]: treesize reduction 132, result has 23.7 percent of original size [2023-11-06 22:54:26,252 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 220 treesize of output 146 [2023-11-06 22:54:26,273 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-06 22:54:26,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 82 treesize of output 54