./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/array-eq-trans.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_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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_6547fed1-1796-4983-bd35-e6eae932785a/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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:38,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:38,425 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 21:53:38,436 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:38,437 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:38,478 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:38,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:38,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:38,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:38,486 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:38,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:38,489 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:38,489 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:38,491 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:38,492 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:38,492 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:38,493 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:38,493 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:38,494 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:53:38,494 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:53:38,495 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:53:38,495 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:38,496 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:53:38,496 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:53:38,497 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:38,497 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:38,498 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:38,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:38,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:38,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:38,501 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:38,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:38,502 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 21:53:38,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 21:53:38,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:38,503 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:38,503 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:38,504 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:38,504 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_6547fed1-1796-4983-bd35-e6eae932785a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2023-11-06 21:53:38,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:38,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:38,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:38,793 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:38,794 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:38,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-06 21:53:41,845 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:42,123 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:42,124 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-06 21:53:42,133 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data/08117bcbf/43d6f68f5fad4572b42995b1faeaf955/FLAG8373161f9 [2023-11-06 21:53:42,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data/08117bcbf/43d6f68f5fad4572b42995b1faeaf955 [2023-11-06 21:53:42,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:42,161 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:42,167 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:42,168 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:42,173 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:42,174 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:42" (1/1) ... [2023-11-06 21:53:42,175 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f84ddf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:42, skipping insertion in model container [2023-11-06 21:53:42,176 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:42" (1/1) ... [2023-11-06 21:53:42,203 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:42,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:42,415 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 21:53:42,416 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a8ec71e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:42, skipping insertion in model container [2023-11-06 21:53:42,416 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:42,417 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 21:53:42,418 INFO L158 Benchmark]: Toolchain (without parser) took 256.44ms. Allocated memory is still 167.8MB. Free memory was 131.6MB in the beginning and 121.5MB in the end (delta: 10.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 21:53:42,419 INFO L158 Benchmark]: CDTParser took 1.04ms. Allocated memory is still 134.2MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 21:53:42,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 249.19ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 121.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-06 21:53:42,421 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.04ms. Allocated memory is still 134.2MB. Free memory is still 77.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 249.19ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 121.5MB in the end (delta: 9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 111]: 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_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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_6547fed1-1796-4983-bd35-e6eae932785a/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 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 21:53:44,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 21:53:45,015 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 21:53:45,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 21:53:45,025 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 21:53:45,065 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 21:53:45,066 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 21:53:45,067 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 21:53:45,068 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 21:53:45,069 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 21:53:45,072 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 21:53:45,073 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 21:53:45,073 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 21:53:45,077 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 21:53:45,079 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 21:53:45,079 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 21:53:45,080 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 21:53:45,080 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 21:53:45,081 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 21:53:45,081 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 21:53:45,082 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 21:53:45,082 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 21:53:45,083 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 21:53:45,083 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 21:53:45,083 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 21:53:45,084 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 21:53:45,084 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 21:53:45,085 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 21:53:45,086 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 21:53:45,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 21:53:45,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 21:53:45,088 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:45,088 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 21:53:45,089 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 21:53:45,089 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 21:53:45,089 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 21:53:45,089 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 21:53:45,090 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 21:53:45,090 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 21:53:45,091 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 21:53:45,091 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 21:53:45,091 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_6547fed1-1796-4983-bd35-e6eae932785a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23bd321b64eb98f17ff91aefc669d9f5b78966b876ea50803bd27f8c9b624679 [2023-11-06 21:53:45,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 21:53:45,539 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 21:53:45,542 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 21:53:45,543 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 21:53:45,543 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 21:53:45,545 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-06 21:53:48,788 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 21:53:49,052 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 21:53:49,053 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/sv-benchmarks/c/weaver/array-eq-trans.wvr.c [2023-11-06 21:53:49,067 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data/63bb1101d/3ab6a00f37ed4b308d4225a944ccf92b/FLAGe4acccb46 [2023-11-06 21:53:49,082 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/data/63bb1101d/3ab6a00f37ed4b308d4225a944ccf92b [2023-11-06 21:53:49,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 21:53:49,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 21:53:49,088 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:49,088 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 21:53:49,094 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 21:53:49,095 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,096 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c36dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49, skipping insertion in model container [2023-11-06 21:53:49,096 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,124 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:49,324 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:49,341 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 21:53:49,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 21:53:49,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:49,391 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 21:53:49,421 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 21:53:49,456 INFO L206 MainTranslator]: Completed translation [2023-11-06 21:53:49,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49 WrapperNode [2023-11-06 21:53:49,457 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 21:53:49,459 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:49,459 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 21:53:49,459 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 21:53:49,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,549 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 11, calls inlined = 15, statements flattened = 208 [2023-11-06 21:53:49,551 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 21:53:49,552 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 21:53:49,552 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 21:53:49,553 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 21:53:49,563 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,564 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,609 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,615 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,629 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,641 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 21:53:49,642 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 21:53:49,642 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 21:53:49,643 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 21:53:49,643 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (1/1) ... [2023-11-06 21:53:49,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 21:53:49,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 21:53:49,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 21:53:49,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 21:53:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 21:53:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 21:53:49,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 21:53:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 21:53:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 21:53:49,767 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 21:53:49,767 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 21:53:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 21:53:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 21:53:49,768 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 21:53:49,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 21:53:49,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 21:53:49,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 21:53:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 21:53:49,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 21:53:49,773 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 21:53:49,951 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 21:53:49,954 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 21:53:50,849 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 21:53:50,862 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 21:53:50,863 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-06 21:53:50,865 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:50 BoogieIcfgContainer [2023-11-06 21:53:50,866 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 21:53:50,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 21:53:50,868 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 21:53:50,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 21:53:50,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:53:49" (1/3) ... [2023-11-06 21:53:50,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:50, skipping insertion in model container [2023-11-06 21:53:50,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:53:49" (2/3) ... [2023-11-06 21:53:50,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96b1cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:53:50, skipping insertion in model container [2023-11-06 21:53:50,874 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:53:50" (3/3) ... [2023-11-06 21:53:50,875 INFO L112 eAbstractionObserver]: Analyzing ICFG array-eq-trans.wvr.c [2023-11-06 21:53:50,894 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 21:53:50,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2023-11-06 21:53:50,895 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 21:53:51,048 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 21:53:51,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 334 places, 354 transitions, 729 flow [2023-11-06 21:53:51,318 INFO L124 PetriNetUnfolderBase]: 30/351 cut-off events. [2023-11-06 21:53:51,318 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:53:51,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 351 events. 30/351 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 481 event pairs, 0 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 221. Up to 3 conditions per place. [2023-11-06 21:53:51,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 334 places, 354 transitions, 729 flow [2023-11-06 21:53:51,341 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 346 transitions, 710 flow [2023-11-06 21:53:51,349 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 21:53:51,364 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 346 transitions, 710 flow [2023-11-06 21:53:51,368 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 346 transitions, 710 flow [2023-11-06 21:53:51,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 346 transitions, 710 flow [2023-11-06 21:53:51,465 INFO L124 PetriNetUnfolderBase]: 30/346 cut-off events. [2023-11-06 21:53:51,465 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 21:53:51,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 346 events. 30/346 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 221. Up to 3 conditions per place. [2023-11-06 21:53:51,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2023-11-06 21:55:56,781 INFO L134 LiptonReduction]: Checked pairs total: 8081 [2023-11-06 21:55:56,781 INFO L136 LiptonReduction]: Total number of compositions: 444 [2023-11-06 21:55:56,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 21:55:56,804 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;@7b65f6bc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 21:55:56,804 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-06 21:55:56,807 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 21:55:56,807 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 21:55:56,808 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:55:56,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:55:56,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:55:56,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:55:56,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:55:56,814 INFO L85 PathProgramCache]: Analyzing trace with hash 43282, now seen corresponding path program 1 times [2023-11-06 21:55:56,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:55:56,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301893896] [2023-11-06 21:55:56,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:55:56,828 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 21:55:56,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:55:56,864 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:55:56,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:55:57,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:55:57,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:55:57,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:55:57,186 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-11-06 21:55:57,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,229 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 21:55:57,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,260 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 21:55:57,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,283 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 21:55:57,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,334 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 21:55:57,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,347 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 21:55:57,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,369 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 21:55:57,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,380 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 21:55:57,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,416 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 21:55:57,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,440 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 21:55:57,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,454 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 21:55:57,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,462 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 21:55:57,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,474 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 21:55:57,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,485 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 21:55:57,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,509 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 21:55:57,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,521 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 21:55:57,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,534 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 21:55:57,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,542 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 21:55:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,554 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 21:55:57,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,565 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 21:55:57,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,588 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 21:55:57,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,600 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 21:55:57,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,623 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 21:55:57,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:55:57,631 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 21:55:57,661 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 21:55:57,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:55:57,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:55:57,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301893896] [2023-11-06 21:55:57,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301893896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:55:57,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:55:57,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:55:57,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782760836] [2023-11-06 21:55:57,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:55:57,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:55:57,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:55:57,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:55:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:55:58,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 798 [2023-11-06 21:55:58,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 72 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 21:55:58,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:55:58,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 798 [2023-11-06 21:55:58,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:00,163 INFO L124 PetriNetUnfolderBase]: 4443/6067 cut-off events. [2023-11-06 21:56:00,164 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-11-06 21:56:00,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12302 conditions, 6067 events. 4443/6067 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 28005 event pairs, 3367 based on Foata normal form. 0/1580 useless extension candidates. Maximal degree in co-relation 11012. Up to 6060 conditions per place. [2023-11-06 21:56:00,230 INFO L140 encePairwiseOnDemand]: 785/798 looper letters, 73 selfloop transitions, 9 changer transitions 0/82 dead transitions. [2023-11-06 21:56:00,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 82 transitions, 346 flow [2023-11-06 21:56:00,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:00,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:56:00,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2023-11-06 21:56:00,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42564745196324144 [2023-11-06 21:56:00,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2023-11-06 21:56:00,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2023-11-06 21:56:00,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:00,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2023-11-06 21:56:00,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 21:56:00,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:56:00,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:56:00,302 INFO L175 Difference]: Start difference. First operand has 74 places, 72 transitions, 162 flow. Second operand 3 states and 1019 transitions. [2023-11-06 21:56:00,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 82 transitions, 346 flow [2023-11-06 21:56:00,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 82 transitions, 334 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 21:56:00,340 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 222 flow [2023-11-06 21:56:00,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-11-06 21:56:00,352 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -3 predicate places. [2023-11-06 21:56:00,352 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 222 flow [2023-11-06 21:56:00,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 311.6666666666667) internal successors, (935), 3 states have internal predecessors, (935), 0 states have call successors, (0), 0 states 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 21:56:00,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:00,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 21:56:00,376 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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)] Ended with exit code 0 [2023-11-06 21:56:00,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:00,565 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:56:00,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:00,566 INFO L85 PathProgramCache]: Analyzing trace with hash 43281, now seen corresponding path program 1 times [2023-11-06 21:56:00,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:00,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [135782830] [2023-11-06 21:56:00,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:00,567 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 21:56:00,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:00,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:00,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:00,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:00,657 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 21:56:00,658 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:00,673 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 21:56:00,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,682 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 21:56:00,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,692 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 21:56:00,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,707 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 21:56:00,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,716 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 21:56:00,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,722 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 21:56:00,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,736 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 21:56:00,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,751 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 21:56:00,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,769 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 21:56:00,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,777 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 21:56:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,796 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 21:56:00,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,822 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-06 21:56:00,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,830 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 21:56:00,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,838 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 21:56:00,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,857 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 21:56:00,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,866 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 21:56:00,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,876 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 21:56:00,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,882 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 21:56:00,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,916 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 21:56:00,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,924 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 21:56:00,930 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,931 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 21:56:00,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,939 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 21:56:00,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,948 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 21:56:00,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:00,954 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 21:56:00,958 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 21:56:00,958 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:56:00,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:00,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [135782830] [2023-11-06 21:56:00,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [135782830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:00,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:00,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 21:56:00,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127610623] [2023-11-06 21:56:00,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:00,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 21:56:00,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:00,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 21:56:00,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 21:56:01,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 798 [2023-11-06 21:56:01,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 21:56:01,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:01,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 798 [2023-11-06 21:56:01,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:02,891 INFO L124 PetriNetUnfolderBase]: 4443/6061 cut-off events. [2023-11-06 21:56:02,891 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:56:02,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12212 conditions, 6061 events. 4443/6061 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 27982 event pairs, 3367 based on Foata normal form. 6/1590 useless extension candidates. Maximal degree in co-relation 12139. Up to 6048 conditions per place. [2023-11-06 21:56:02,937 INFO L140 encePairwiseOnDemand]: 791/798 looper letters, 69 selfloop transitions, 7 changer transitions 0/76 dead transitions. [2023-11-06 21:56:02,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 76 transitions, 368 flow [2023-11-06 21:56:02,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:02,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:56:02,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1013 transitions. [2023-11-06 21:56:02,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42314118629908104 [2023-11-06 21:56:02,944 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1013 transitions. [2023-11-06 21:56:02,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1013 transitions. [2023-11-06 21:56:02,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:02,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1013 transitions. [2023-11-06 21:56:02,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 337.6666666666667) internal successors, (1013), 3 states have internal predecessors, (1013), 0 states have call successors, (0), 0 states 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 21:56:02,955 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:56:02,958 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:56:02,958 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 222 flow. Second operand 3 states and 1013 transitions. [2023-11-06 21:56:02,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 76 transitions, 368 flow [2023-11-06 21:56:02,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:56:02,961 INFO L231 Difference]: Finished difference. Result has 68 places, 76 transitions, 212 flow [2023-11-06 21:56:02,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=212, PETRI_PLACES=68, PETRI_TRANSITIONS=76} [2023-11-06 21:56:02,962 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -6 predicate places. [2023-11-06 21:56:02,962 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 76 transitions, 212 flow [2023-11-06 21:56:02,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.6666666666667) internal successors, (944), 3 states have internal predecessors, (944), 0 states have call successors, (0), 0 states 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 21:56:02,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:02,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 21:56:02,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:03,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:03,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:56:03,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:03,176 INFO L85 PathProgramCache]: Analyzing trace with hash 1346832, now seen corresponding path program 1 times [2023-11-06 21:56:03,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:03,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937057051] [2023-11-06 21:56:03,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:03,177 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:56:03,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:03,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:03,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:03,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:03,277 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 21:56:03,279 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:03,297 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 21:56:03,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,313 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 21:56:03,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,336 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 21:56:03,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,349 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 21:56:03,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,361 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 21:56:03,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,369 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 21:56:03,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,410 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 21:56:03,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,430 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 21:56:03,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,452 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 21:56:03,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,464 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 21:56:03,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,479 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 21:56:03,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,501 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 21:56:03,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,513 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 21:56:03,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,528 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 21:56:03,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,540 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 21:56:03,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,548 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 21:56:03,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,573 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 21:56:03,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,585 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 21:56:03,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,609 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 21:56:03,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,620 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 21:56:03,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,666 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 21:56:03,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,675 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 21:56:03,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,688 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 21:56:03,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:03,698 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 21:56:03,780 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 21:56:03,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:04,022 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 21:56:04,022 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:04,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937057051] [2023-11-06 21:56:04,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [937057051] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:56:04,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:56:04,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 21:56:04,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289417719] [2023-11-06 21:56:04,023 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:56:04,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 21:56:04,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:04,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 21:56:04,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 21:56:07,091 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 798 [2023-11-06 21:56:07,095 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 76 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 297.0) internal successors, (1782), 6 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states 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 21:56:07,095 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:07,095 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 798 [2023-11-06 21:56:07,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:10,922 INFO L124 PetriNetUnfolderBase]: 4458/6085 cut-off events. [2023-11-06 21:56:10,923 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 21:56:10,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12291 conditions, 6085 events. 4458/6085 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 662. Compared 28076 event pairs, 3367 based on Foata normal form. 0/1594 useless extension candidates. Maximal degree in co-relation 12139. Up to 6066 conditions per place. [2023-11-06 21:56:10,960 INFO L140 encePairwiseOnDemand]: 786/798 looper letters, 67 selfloop transitions, 33 changer transitions 0/100 dead transitions. [2023-11-06 21:56:10,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 100 transitions, 526 flow [2023-11-06 21:56:10,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 21:56:10,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 21:56:10,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1885 transitions. [2023-11-06 21:56:10,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3936925647451963 [2023-11-06 21:56:10,972 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1885 transitions. [2023-11-06 21:56:10,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1885 transitions. [2023-11-06 21:56:10,974 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:10,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1885 transitions. [2023-11-06 21:56:10,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 314.1666666666667) internal successors, (1885), 6 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 21:56:10,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 798.0) internal successors, (5586), 7 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states 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 21:56:10,994 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 798.0) internal successors, (5586), 7 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states 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 21:56:10,995 INFO L175 Difference]: Start difference. First operand has 68 places, 76 transitions, 212 flow. Second operand 6 states and 1885 transitions. [2023-11-06 21:56:10,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 100 transitions, 526 flow [2023-11-06 21:56:10,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 100 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:56:10,999 INFO L231 Difference]: Finished difference. Result has 74 places, 100 transitions, 423 flow [2023-11-06 21:56:10,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=423, PETRI_PLACES=74, PETRI_TRANSITIONS=100} [2023-11-06 21:56:11,000 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-06 21:56:11,001 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 100 transitions, 423 flow [2023-11-06 21:56:11,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 297.0) internal successors, (1782), 6 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states 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 21:56:11,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:11,003 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:56:11,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:11,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:11,214 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:56:11,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:11,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1296270365, now seen corresponding path program 1 times [2023-11-06 21:56:11,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:11,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1904749730] [2023-11-06 21:56:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:11,215 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 21:56:11,215 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:11,216 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:11,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:11,350 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:56:11,352 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:11,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:11,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:11,428 INFO L322 Elim1Store]: treesize reduction 44, result has 25.4 percent of original size [2023-11-06 21:56:11,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 33 treesize of output 29 [2023-11-06 21:56:11,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:11,531 INFO L322 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2023-11-06 21:56:11,531 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 42 treesize of output 37 [2023-11-06 21:56:11,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:11,603 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 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 21:56:11,657 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:56:11,657 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 14 treesize of output 20 [2023-11-06 21:56:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:56:11,689 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:56:11,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:11,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1904749730] [2023-11-06 21:56:11,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1904749730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:11,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:11,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:56:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264666571] [2023-11-06 21:56:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:56:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:11,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:56:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:56:12,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 798 [2023-11-06 21:56:12,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 423 flow. Second operand has 4 states, 4 states have (on average 324.25) internal successors, (1297), 4 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states 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 21:56:12,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:12,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 798 [2023-11-06 21:56:12,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:13,625 INFO L124 PetriNetUnfolderBase]: 3488/4820 cut-off events. [2023-11-06 21:56:13,625 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-06 21:56:13,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9807 conditions, 4820 events. 3488/4820 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 446. Compared 21664 event pairs, 2618 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 9704. Up to 4820 conditions per place. [2023-11-06 21:56:13,649 INFO L140 encePairwiseOnDemand]: 795/798 looper letters, 93 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-06 21:56:13,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 576 flow [2023-11-06 21:56:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:56:13,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:56:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1037 transitions. [2023-11-06 21:56:13,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43316624895572264 [2023-11-06 21:56:13,657 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1037 transitions. [2023-11-06 21:56:13,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1037 transitions. [2023-11-06 21:56:13,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:13,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1037 transitions. [2023-11-06 21:56:13,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 345.6666666666667) internal successors, (1037), 3 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states 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 21:56:13,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:56:13,669 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:56:13,669 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 423 flow. Second operand 3 states and 1037 transitions. [2023-11-06 21:56:13,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 576 flow [2023-11-06 21:56:13,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 532 flow, removed 15 selfloop flow, removed 1 redundant places. [2023-11-06 21:56:13,674 INFO L231 Difference]: Finished difference. Result has 73 places, 94 transitions, 346 flow [2023-11-06 21:56:13,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=73, PETRI_TRANSITIONS=94} [2023-11-06 21:56:13,675 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2023-11-06 21:56:13,676 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 94 transitions, 346 flow [2023-11-06 21:56:13,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 324.25) internal successors, (1297), 4 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states 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 21:56:13,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:13,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 21:56:13,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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)] Ended with exit code 0 [2023-11-06 21:56:13,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:13,888 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:56:13,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:13,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1296270367, now seen corresponding path program 1 times [2023-11-06 21:56:13,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:13,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1158682865] [2023-11-06 21:56:13,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:13,890 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 21:56:13,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:13,891 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:13,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:14,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:14,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-06 21:56:14,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:14,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,094 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 14 treesize of output 11 [2023-11-06 21:56:14,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,121 INFO L322 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2023-11-06 21:56:14,121 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 21:56:14,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,172 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,206 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 21:56:14,206 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 21:56:14,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-06 21:56:14,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:14,335 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:56:14,422 INFO L322 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-06 21:56:14,423 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 14 treesize of output 20 [2023-11-06 21:56:14,586 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 21:56:14,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:15,209 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 21:56:15,210 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:15,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1158682865] [2023-11-06 21:56:15,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1158682865] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:56:15,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:56:15,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 21:56:15,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013217934] [2023-11-06 21:56:15,211 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:56:15,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:56:15,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:56:15,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-11-06 21:56:20,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2023-11-06 21:56:24,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 798 [2023-11-06 21:56:24,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 94 transitions, 346 flow. Second operand has 10 states, 10 states have (on average 295.0) internal successors, (2950), 10 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states 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 21:56:24,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:24,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 798 [2023-11-06 21:56:24,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:26,284 INFO L124 PetriNetUnfolderBase]: 2518/3555 cut-off events. [2023-11-06 21:56:26,284 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-06 21:56:26,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7245 conditions, 3555 events. 2518/3555 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 15307 event pairs, 1869 based on Foata normal form. 0/1169 useless extension candidates. Maximal degree in co-relation 7233. Up to 3541 conditions per place. [2023-11-06 21:56:26,298 INFO L140 encePairwiseOnDemand]: 789/798 looper letters, 71 selfloop transitions, 17 changer transitions 0/88 dead transitions. [2023-11-06 21:56:26,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 88 transitions, 494 flow [2023-11-06 21:56:26,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:56:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:56:26,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1550 transitions. [2023-11-06 21:56:26,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38847117794486213 [2023-11-06 21:56:26,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1550 transitions. [2023-11-06 21:56:26,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1550 transitions. [2023-11-06 21:56:26,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:26,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1550 transitions. [2023-11-06 21:56:26,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 310.0) internal successors, (1550), 5 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states 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 21:56:26,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:56:26,324 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:56:26,324 INFO L175 Difference]: Start difference. First operand has 73 places, 94 transitions, 346 flow. Second operand 5 states and 1550 transitions. [2023-11-06 21:56:26,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 88 transitions, 494 flow [2023-11-06 21:56:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 88 transitions, 493 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:56:26,328 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 351 flow [2023-11-06 21:56:26,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=351, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2023-11-06 21:56:26,329 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-11-06 21:56:26,329 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 351 flow [2023-11-06 21:56:26,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 295.0) internal successors, (2950), 10 states have internal predecessors, (2950), 0 states have call successors, (0), 0 states 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 21:56:26,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:26,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:56:26,343 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:26,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:26,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:56:26,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:26,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1529661152, now seen corresponding path program 1 times [2023-11-06 21:56:26,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:26,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1086469723] [2023-11-06 21:56:26,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:56:26,545 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 21:56:26,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:26,547 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:26,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:26,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:56:26,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:56:26,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:26,753 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 21:56:26,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:56:26,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1086469723] [2023-11-06 21:56:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1086469723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:56:26,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:56:26,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:56:26,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302023259] [2023-11-06 21:56:26,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:56:26,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:56:26,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:56:26,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:56:27,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 798 [2023-11-06 21:56:27,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 88 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 21:56:27,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:27,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 798 [2023-11-06 21:56:27,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:28,759 INFO L124 PetriNetUnfolderBase]: 3368/4852 cut-off events. [2023-11-06 21:56:28,760 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-11-06 21:56:28,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9929 conditions, 4852 events. 3368/4852 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 23025 event pairs, 2538 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 9916. Up to 3554 conditions per place. [2023-11-06 21:56:28,779 INFO L140 encePairwiseOnDemand]: 786/798 looper letters, 150 selfloop transitions, 3 changer transitions 0/153 dead transitions. [2023-11-06 21:56:28,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 153 transitions, 900 flow [2023-11-06 21:56:28,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:56:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:56:28,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1364 transitions. [2023-11-06 21:56:28,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4273182957393484 [2023-11-06 21:56:28,791 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1364 transitions. [2023-11-06 21:56:28,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1364 transitions. [2023-11-06 21:56:28,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:56:28,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1364 transitions. [2023-11-06 21:56:28,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states 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 21:56:28,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 798.0) internal successors, (3990), 5 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 21:56:28,804 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 798.0) internal successors, (3990), 5 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 21:56:28,805 INFO L175 Difference]: Start difference. First operand has 74 places, 88 transitions, 351 flow. Second operand 4 states and 1364 transitions. [2023-11-06 21:56:28,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 153 transitions, 900 flow [2023-11-06 21:56:28,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 153 transitions, 864 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:56:28,812 INFO L231 Difference]: Finished difference. Result has 75 places, 88 transitions, 353 flow [2023-11-06 21:56:28,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=353, PETRI_PLACES=75, PETRI_TRANSITIONS=88} [2023-11-06 21:56:28,815 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 1 predicate places. [2023-11-06 21:56:28,816 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 88 transitions, 353 flow [2023-11-06 21:56:28,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 311.5) internal successors, (1246), 4 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states 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 21:56:28,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:56:28,817 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 21:56:28,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:29,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:29,028 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:56:29,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:56:29,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1473820818, now seen corresponding path program 2 times [2023-11-06 21:56:29,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:56:29,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438022368] [2023-11-06 21:56:29,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 21:56:29,031 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 21:56:29,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:56:29,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:29,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:56:29,142 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 21:56:29,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 21:56:29,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:56:29,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:56:29,167 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 21:56:29,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,181 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 21:56:29,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,189 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 8 treesize of output 1 [2023-11-06 21:56:29,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,199 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 21:56:29,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,207 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 21:56:29,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,218 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 21:56:29,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,234 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 21:56:29,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,253 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 21:56:29,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,278 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 21:56:29,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 21:56:29,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,341 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 21:56:29,352 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,353 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 21:56:29,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,372 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 21:56:29,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,390 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 21:56:29,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,397 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 21:56:29,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,409 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 21:56:29,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,422 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 21:56:29,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,433 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 21:56:29,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,442 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 21:56:29,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,450 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 21:56:29,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,459 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 21:56:29,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,468 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 21:56:29,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,488 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 21:56:29,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:56:29,497 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 21:56:29,690 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 21:56:29,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:56:30,415 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 21:56:30,416 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:56:30,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438022368] [2023-11-06 21:56:30,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438022368] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:56:30,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:56:30,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 21:56:30,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640007923] [2023-11-06 21:56:30,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:56:30,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 21:56:30,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:56:30,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 21:56:30,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 21:56:40,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 299 out of 798 [2023-11-06 21:56:40,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 88 transitions, 353 flow. Second operand has 12 states, 12 states have (on average 300.0) internal successors, (3600), 12 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states 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 21:56:40,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:56:40,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 299 of 798 [2023-11-06 21:56:40,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:56:44,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:46,939 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:47,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:49,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:52,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:53,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:56,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:58,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:56:59,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:57:01,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:57:02,924 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 21:57:07,459 INFO L124 PetriNetUnfolderBase]: 3392/4902 cut-off events. [2023-11-06 21:57:07,460 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-06 21:57:07,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10685 conditions, 4902 events. 3392/4902 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 23665 event pairs, 2538 based on Foata normal form. 22/1877 useless extension candidates. Maximal degree in co-relation 10671. Up to 4828 conditions per place. [2023-11-06 21:57:07,481 INFO L140 encePairwiseOnDemand]: 788/798 looper letters, 64 selfloop transitions, 55 changer transitions 0/119 dead transitions. [2023-11-06 21:57:07,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 781 flow [2023-11-06 21:57:07,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 21:57:07,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-06 21:57:07,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4319 transitions. [2023-11-06 21:57:07,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3865914786967419 [2023-11-06 21:57:07,500 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4319 transitions. [2023-11-06 21:57:07,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4319 transitions. [2023-11-06 21:57:07,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:07,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4319 transitions. [2023-11-06 21:57:07,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 308.5) internal successors, (4319), 14 states have internal predecessors, (4319), 0 states have call successors, (0), 0 states 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 21:57:07,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 798.0) internal successors, (11970), 15 states have internal predecessors, (11970), 0 states have call successors, (0), 0 states 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 21:57:07,540 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 798.0) internal successors, (11970), 15 states have internal predecessors, (11970), 0 states have call successors, (0), 0 states 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 21:57:07,540 INFO L175 Difference]: Start difference. First operand has 75 places, 88 transitions, 353 flow. Second operand 14 states and 4319 transitions. [2023-11-06 21:57:07,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 781 flow [2023-11-06 21:57:07,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 119 transitions, 775 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:07,546 INFO L231 Difference]: Finished difference. Result has 94 places, 118 transitions, 715 flow [2023-11-06 21:57:07,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=715, PETRI_PLACES=94, PETRI_TRANSITIONS=118} [2023-11-06 21:57:07,547 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 20 predicate places. [2023-11-06 21:57:07,547 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 118 transitions, 715 flow [2023-11-06 21:57:07,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 300.0) internal successors, (3600), 12 states have internal predecessors, (3600), 0 states have call successors, (0), 0 states 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 21:57:07,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:07,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:57:07,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:07,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:07,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:07,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:07,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1529661263, now seen corresponding path program 1 times [2023-11-06 21:57:07,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:07,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515007259] [2023-11-06 21:57:07,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:07,762 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-06 21:57:07,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:07,763 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:07,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:07,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 21:57:07,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:07,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:07,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:07,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-06 21:57:07,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:07,966 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 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 21:57:07,997 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:08,003 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:08,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:08,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,046 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:08,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,080 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 21:57:08,093 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,128 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 21:57:08,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,144 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 21:57:08,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,177 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:57:08,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:08,207 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:57:08,273 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 21:57:08,274 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:08,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:08,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515007259] [2023-11-06 21:57:08,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515007259] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:08,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:08,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457008511] [2023-11-06 21:57:08,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:08,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:08,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:08,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:08,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 323 out of 798 [2023-11-06 21:57:08,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 118 transitions, 715 flow. Second operand has 4 states, 4 states have (on average 324.5) internal successors, (1298), 4 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:08,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:08,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 323 of 798 [2023-11-06 21:57:08,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:10,091 INFO L124 PetriNetUnfolderBase]: 3203/4620 cut-off events. [2023-11-06 21:57:10,091 INFO L125 PetriNetUnfolderBase]: For 263/263 co-relation queries the response was YES. [2023-11-06 21:57:10,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 4620 events. 3203/4620 cut-off events. For 263/263 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 22032 event pairs, 2389 based on Foata normal form. 0/1819 useless extension candidates. Maximal degree in co-relation 10270. Up to 4620 conditions per place. [2023-11-06 21:57:10,110 INFO L140 encePairwiseOnDemand]: 795/798 looper letters, 115 selfloop transitions, 1 changer transitions 0/116 dead transitions. [2023-11-06 21:57:10,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 116 transitions, 943 flow [2023-11-06 21:57:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1033 transitions. [2023-11-06 21:57:10,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4314954051796157 [2023-11-06 21:57:10,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1033 transitions. [2023-11-06 21:57:10,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1033 transitions. [2023-11-06 21:57:10,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:10,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1033 transitions. [2023-11-06 21:57:10,118 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 344.3333333333333) internal successors, (1033), 3 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states 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 21:57:10,123 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:57:10,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:57:10,124 INFO L175 Difference]: Start difference. First operand has 94 places, 118 transitions, 715 flow. Second operand 3 states and 1033 transitions. [2023-11-06 21:57:10,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 116 transitions, 943 flow [2023-11-06 21:57:10,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 116 transitions, 785 flow, removed 42 selfloop flow, removed 5 redundant places. [2023-11-06 21:57:10,132 INFO L231 Difference]: Finished difference. Result has 89 places, 116 transitions, 555 flow [2023-11-06 21:57:10,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=553, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=555, PETRI_PLACES=89, PETRI_TRANSITIONS=116} [2023-11-06 21:57:10,133 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 15 predicate places. [2023-11-06 21:57:10,133 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 116 transitions, 555 flow [2023-11-06 21:57:10,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 324.5) internal successors, (1298), 4 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:10,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:10,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 21:57:10,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:10,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:10,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:10,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:10,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1529661264, now seen corresponding path program 1 times [2023-11-06 21:57:10,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:10,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1044325415] [2023-11-06 21:57:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:10,348 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 21:57:10,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:10,349 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:10,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:10,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:10,480 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:57:10,482 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:10,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,521 INFO L322 Elim1Store]: treesize reduction 19, result has 26.9 percent of original size [2023-11-06 21:57:10,521 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 15 [2023-11-06 21:57:10,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,551 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 1 [2023-11-06 21:57:10,570 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,589 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 21:57:10,589 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 1 [2023-11-06 21:57:10,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,613 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 15 treesize of output 1 [2023-11-06 21:57:10,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,676 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 21:57:10,676 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 1 [2023-11-06 21:57:10,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,712 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 1 [2023-11-06 21:57:10,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,746 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 15 treesize of output 1 [2023-11-06 21:57:10,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,784 INFO L322 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2023-11-06 21:57:10,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 1 [2023-11-06 21:57:10,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,816 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 0 case distinctions, treesize of input 16 treesize of output 13 [2023-11-06 21:57:10,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:10,843 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 0 case distinctions, treesize of input 14 treesize of output 20 [2023-11-06 21:57:10,913 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 21:57:10,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:10,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1044325415] [2023-11-06 21:57:10,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1044325415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:10,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:10,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 21:57:10,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989409589] [2023-11-06 21:57:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:10,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:10,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:10,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:10,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:11,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 798 [2023-11-06 21:57:11,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 116 transitions, 555 flow. Second operand has 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 21:57:11,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:11,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 798 [2023-11-06 21:57:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:12,984 INFO L124 PetriNetUnfolderBase]: 3014/4338 cut-off events. [2023-11-06 21:57:12,984 INFO L125 PetriNetUnfolderBase]: For 346/346 co-relation queries the response was YES. [2023-11-06 21:57:12,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9596 conditions, 4338 events. 3014/4338 cut-off events. For 346/346 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 20507 event pairs, 2240 based on Foata normal form. 0/1777 useless extension candidates. Maximal degree in co-relation 9574. Up to 4338 conditions per place. [2023-11-06 21:57:13,000 INFO L140 encePairwiseOnDemand]: 795/798 looper letters, 113 selfloop transitions, 1 changer transitions 0/114 dead transitions. [2023-11-06 21:57:13,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 114 transitions, 779 flow [2023-11-06 21:57:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1016 transitions. [2023-11-06 21:57:13,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4243943191311612 [2023-11-06 21:57:13,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1016 transitions. [2023-11-06 21:57:13,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1016 transitions. [2023-11-06 21:57:13,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:13,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1016 transitions. [2023-11-06 21:57:13,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 338.6666666666667) internal successors, (1016), 3 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states 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 21:57:13,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:57:13,013 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:57:13,013 INFO L175 Difference]: Start difference. First operand has 89 places, 116 transitions, 555 flow. Second operand 3 states and 1016 transitions. [2023-11-06 21:57:13,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 114 transitions, 779 flow [2023-11-06 21:57:13,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 114 transitions, 778 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:13,020 INFO L231 Difference]: Finished difference. Result has 88 places, 114 transitions, 552 flow [2023-11-06 21:57:13,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=550, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=552, PETRI_PLACES=88, PETRI_TRANSITIONS=114} [2023-11-06 21:57:13,021 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 14 predicate places. [2023-11-06 21:57:13,021 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 114 transitions, 552 flow [2023-11-06 21:57:13,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 319.5) internal successors, (1278), 4 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 21:57:13,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:13,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:13,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:13,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:13,234 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:13,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:13,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1500349548, now seen corresponding path program 1 times [2023-11-06 21:57:13,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:13,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892483361] [2023-11-06 21:57:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:13,235 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 21:57:13,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:13,236 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:13,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:13,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:57:13,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 21:57:13,459 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:13,459 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892483361] [2023-11-06 21:57:13,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892483361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:13,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:13,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:13,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275301368] [2023-11-06 21:57:13,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:13,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:57:13,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:57:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:13,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 798 [2023-11-06 21:57:13,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 114 transitions, 552 flow. Second operand has 5 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 21:57:13,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:13,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 798 [2023-11-06 21:57:13,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:16,236 INFO L124 PetriNetUnfolderBase]: 6652/9608 cut-off events. [2023-11-06 21:57:16,236 INFO L125 PetriNetUnfolderBase]: For 489/489 co-relation queries the response was YES. [2023-11-06 21:57:16,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20885 conditions, 9608 events. 6652/9608 cut-off events. For 489/489 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 52311 event pairs, 3290 based on Foata normal form. 115/4059 useless extension candidates. Maximal degree in co-relation 20862. Up to 4211 conditions per place. [2023-11-06 21:57:16,295 INFO L140 encePairwiseOnDemand]: 784/798 looper letters, 204 selfloop transitions, 15 changer transitions 0/219 dead transitions. [2023-11-06 21:57:16,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 219 transitions, 1302 flow [2023-11-06 21:57:16,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:57:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:57:16,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1707 transitions. [2023-11-06 21:57:16,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42781954887218043 [2023-11-06 21:57:16,300 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1707 transitions. [2023-11-06 21:57:16,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1707 transitions. [2023-11-06 21:57:16,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:16,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1707 transitions. [2023-11-06 21:57:16,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 341.4) internal successors, (1707), 5 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states 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 21:57:16,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:57:16,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:57:16,312 INFO L175 Difference]: Start difference. First operand has 88 places, 114 transitions, 552 flow. Second operand 5 states and 1707 transitions. [2023-11-06 21:57:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 219 transitions, 1302 flow [2023-11-06 21:57:16,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 219 transitions, 1301 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:16,323 INFO L231 Difference]: Finished difference. Result has 93 places, 115 transitions, 618 flow [2023-11-06 21:57:16,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=618, PETRI_PLACES=93, PETRI_TRANSITIONS=115} [2023-11-06 21:57:16,324 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2023-11-06 21:57:16,325 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 115 transitions, 618 flow [2023-11-06 21:57:16,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.4) internal successors, (1552), 5 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states 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 21:57:16,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:16,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:16,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:16,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:16,537 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:16,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:16,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1125686273, now seen corresponding path program 1 times [2023-11-06 21:57:16,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:16,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557346688] [2023-11-06 21:57:16,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:16,538 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 21:57:16,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:16,539 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:16,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:16,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:16,670 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 21:57:16,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:16,677 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 21:57:16,709 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 21:57:16,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:16,709 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:16,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557346688] [2023-11-06 21:57:16,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557346688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:16,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:16,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:16,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738688907] [2023-11-06 21:57:16,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:16,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:16,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:16,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:16,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:17,203 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 798 [2023-11-06 21:57:17,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 618 flow. Second operand has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:17,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:17,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 798 [2023-11-06 21:57:17,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:18,679 INFO L124 PetriNetUnfolderBase]: 5010/7256 cut-off events. [2023-11-06 21:57:18,679 INFO L125 PetriNetUnfolderBase]: For 850/850 co-relation queries the response was YES. [2023-11-06 21:57:18,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17036 conditions, 7256 events. 5010/7256 cut-off events. For 850/850 co-relation queries the response was YES. Maximal size of possible extension queue 433. Compared 37030 event pairs, 3710 based on Foata normal form. 0/3304 useless extension candidates. Maximal degree in co-relation 17010. Up to 7148 conditions per place. [2023-11-06 21:57:18,716 INFO L140 encePairwiseOnDemand]: 792/798 looper letters, 102 selfloop transitions, 9 changer transitions 0/111 dead transitions. [2023-11-06 21:57:18,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 111 transitions, 832 flow [2023-11-06 21:57:18,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 21:57:18,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 21:57:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1276 transitions. [2023-11-06 21:57:18,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39974937343358397 [2023-11-06 21:57:18,721 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1276 transitions. [2023-11-06 21:57:18,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1276 transitions. [2023-11-06 21:57:18,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:18,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1276 transitions. [2023-11-06 21:57:18,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 319.0) internal successors, (1276), 4 states have internal predecessors, (1276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 798.0) internal successors, (3990), 5 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 21:57:18,729 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 798.0) internal successors, (3990), 5 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states 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 21:57:18,729 INFO L175 Difference]: Start difference. First operand has 93 places, 115 transitions, 618 flow. Second operand 4 states and 1276 transitions. [2023-11-06 21:57:18,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 111 transitions, 832 flow [2023-11-06 21:57:18,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 111 transitions, 826 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:18,737 INFO L231 Difference]: Finished difference. Result has 91 places, 111 transitions, 622 flow [2023-11-06 21:57:18,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=622, PETRI_PLACES=91, PETRI_TRANSITIONS=111} [2023-11-06 21:57:18,738 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 17 predicate places. [2023-11-06 21:57:18,739 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 111 transitions, 622 flow [2023-11-06 21:57:18,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:18,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:18,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:18,752 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:18,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:18,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:18,952 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:18,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1125686168, now seen corresponding path program 1 times [2023-11-06 21:57:18,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:18,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [188046751] [2023-11-06 21:57:18,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:18,952 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 21:57:18,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:18,953 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:18,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:19,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 21:57:19,085 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:19,158 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 21:57:19,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:19,158 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:19,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [188046751] [2023-11-06 21:57:19,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [188046751] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:19,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:19,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:19,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662611094] [2023-11-06 21:57:19,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:19,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:57:19,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:19,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:57:19,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:19,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 798 [2023-11-06 21:57:19,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 111 transitions, 622 flow. Second operand has 5 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states 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 21:57:19,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:19,495 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 798 [2023-11-06 21:57:19,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:22,239 INFO L124 PetriNetUnfolderBase]: 8208/11760 cut-off events. [2023-11-06 21:57:22,239 INFO L125 PetriNetUnfolderBase]: For 1664/1664 co-relation queries the response was YES. [2023-11-06 21:57:22,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27931 conditions, 11760 events. 8208/11760 cut-off events. For 1664/1664 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 65609 event pairs, 3182 based on Foata normal form. 0/5278 useless extension candidates. Maximal degree in co-relation 27904. Up to 5797 conditions per place. [2023-11-06 21:57:22,307 INFO L140 encePairwiseOnDemand]: 786/798 looper letters, 183 selfloop transitions, 15 changer transitions 0/198 dead transitions. [2023-11-06 21:57:22,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 198 transitions, 1331 flow [2023-11-06 21:57:22,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:57:22,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:57:22,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1682 transitions. [2023-11-06 21:57:22,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42155388471177946 [2023-11-06 21:57:22,312 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1682 transitions. [2023-11-06 21:57:22,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1682 transitions. [2023-11-06 21:57:22,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:22,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1682 transitions. [2023-11-06 21:57:22,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 336.4) internal successors, (1682), 5 states have internal predecessors, (1682), 0 states have call successors, (0), 0 states 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 21:57:22,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:57:22,321 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:57:22,322 INFO L175 Difference]: Start difference. First operand has 91 places, 111 transitions, 622 flow. Second operand 5 states and 1682 transitions. [2023-11-06 21:57:22,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 198 transitions, 1331 flow [2023-11-06 21:57:22,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 198 transitions, 1313 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:22,334 INFO L231 Difference]: Finished difference. Result has 95 places, 112 transitions, 675 flow [2023-11-06 21:57:22,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=675, PETRI_PLACES=95, PETRI_TRANSITIONS=112} [2023-11-06 21:57:22,336 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2023-11-06 21:57:22,336 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 112 transitions, 675 flow [2023-11-06 21:57:22,336 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 310.6) internal successors, (1553), 5 states have internal predecessors, (1553), 0 states have call successors, (0), 0 states 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 21:57:22,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:22,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:22,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:22,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:22,549 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:22,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:22,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1125686437, now seen corresponding path program 1 times [2023-11-06 21:57:22,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:22,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [702247243] [2023-11-06 21:57:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:22,550 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 21:57:22,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:22,551 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:22,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:22,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 21:57:22,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:22,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,746 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 21:57:22,764 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,772 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 21:57:22,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,796 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 21:57:22,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,815 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 21:57:22,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,822 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:22,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,836 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 21:57:22,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,855 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 21:57:22,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,872 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 21:57:22,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,894 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 21:57:22,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,924 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 21:57:22,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,933 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:22,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,945 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-06 21:57:22,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:22,977 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:57:23,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:23,021 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-11-06 21:57:23,128 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 21:57:23,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:23,129 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:23,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [702247243] [2023-11-06 21:57:23,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [702247243] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:23,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:23,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656291719] [2023-11-06 21:57:23,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:23,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 21:57:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:23,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 21:57:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 21:57:24,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 798 [2023-11-06 21:57:24,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 112 transitions, 675 flow. Second operand has 5 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states 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 21:57:24,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:24,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 798 [2023-11-06 21:57:24,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:26,100 INFO L124 PetriNetUnfolderBase]: 7732/11044 cut-off events. [2023-11-06 21:57:26,101 INFO L125 PetriNetUnfolderBase]: For 2330/2330 co-relation queries the response was YES. [2023-11-06 21:57:26,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28899 conditions, 11044 events. 7732/11044 cut-off events. For 2330/2330 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 58994 event pairs, 5978 based on Foata normal form. 0/6040 useless extension candidates. Maximal degree in co-relation 28870. Up to 11044 conditions per place. [2023-11-06 21:57:26,168 INFO L140 encePairwiseOnDemand]: 795/798 looper letters, 109 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-11-06 21:57:26,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 110 transitions, 891 flow [2023-11-06 21:57:26,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 21:57:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 21:57:26,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1019 transitions. [2023-11-06 21:57:26,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42564745196324144 [2023-11-06 21:57:26,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1019 transitions. [2023-11-06 21:57:26,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1019 transitions. [2023-11-06 21:57:26,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:26,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1019 transitions. [2023-11-06 21:57:26,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 339.6666666666667) internal successors, (1019), 3 states have internal predecessors, (1019), 0 states have call successors, (0), 0 states 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 21:57:26,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:57:26,180 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 798.0) internal successors, (3192), 4 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states 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 21:57:26,180 INFO L175 Difference]: Start difference. First operand has 95 places, 112 transitions, 675 flow. Second operand 3 states and 1019 transitions. [2023-11-06 21:57:26,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 110 transitions, 891 flow [2023-11-06 21:57:26,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 110 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 21:57:26,195 INFO L231 Difference]: Finished difference. Result has 93 places, 110 transitions, 658 flow [2023-11-06 21:57:26,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=656, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=658, PETRI_PLACES=93, PETRI_TRANSITIONS=110} [2023-11-06 21:57:26,196 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2023-11-06 21:57:26,197 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 110 transitions, 658 flow [2023-11-06 21:57:26,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 322.6) internal successors, (1613), 5 states have internal predecessors, (1613), 0 states have call successors, (0), 0 states 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 21:57:26,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:26,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:26,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-06 21:57:26,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:26,410 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:26,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 685845635, now seen corresponding path program 1 times [2023-11-06 21:57:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:26,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1522604595] [2023-11-06 21:57:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:26,411 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 21:57:26,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:26,412 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:26,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:26,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 21:57:26,609 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:26,612 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 21:57:26,635 INFO L322 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-06 21:57:26,635 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 14 treesize of output 20 [2023-11-06 21:57:26,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 21:57:26,667 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 21:57:26,667 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:26,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1522604595] [2023-11-06 21:57:26,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1522604595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 21:57:26,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 21:57:26,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 21:57:26,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929664392] [2023-11-06 21:57:26,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 21:57:26,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 21:57:26,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:26,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 21:57:26,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 21:57:27,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 798 [2023-11-06 21:57:27,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 110 transitions, 658 flow. Second operand has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:27,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:27,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 798 [2023-11-06 21:57:27,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:29,150 INFO L124 PetriNetUnfolderBase]: 5918/8480 cut-off events. [2023-11-06 21:57:29,150 INFO L125 PetriNetUnfolderBase]: For 1849/1849 co-relation queries the response was YES. [2023-11-06 21:57:29,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21671 conditions, 8480 events. 5918/8480 cut-off events. For 1849/1849 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 44322 event pairs, 4436 based on Foata normal form. 0/5054 useless extension candidates. Maximal degree in co-relation 21641. Up to 8372 conditions per place. [2023-11-06 21:57:29,189 INFO L140 encePairwiseOnDemand]: 791/798 looper letters, 86 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2023-11-06 21:57:29,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 106 transitions, 850 flow [2023-11-06 21:57:29,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 21:57:29,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 21:57:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1574 transitions. [2023-11-06 21:57:29,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944862155388471 [2023-11-06 21:57:29,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1574 transitions. [2023-11-06 21:57:29,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1574 transitions. [2023-11-06 21:57:29,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:29,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1574 transitions. [2023-11-06 21:57:29,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 314.8) internal successors, (1574), 5 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states 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 21:57:29,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:57:29,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 798.0) internal successors, (4788), 6 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states 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 21:57:29,204 INFO L175 Difference]: Start difference. First operand has 93 places, 110 transitions, 658 flow. Second operand 5 states and 1574 transitions. [2023-11-06 21:57:29,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 106 transitions, 850 flow [2023-11-06 21:57:29,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 106 transitions, 849 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 21:57:29,214 INFO L231 Difference]: Finished difference. Result has 92 places, 106 transitions, 677 flow [2023-11-06 21:57:29,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=637, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=677, PETRI_PLACES=92, PETRI_TRANSITIONS=106} [2023-11-06 21:57:29,215 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 18 predicate places. [2023-11-06 21:57:29,216 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 106 transitions, 677 flow [2023-11-06 21:57:29,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 21:57:29,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:29,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:29,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:29,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:29,429 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 56 more)] === [2023-11-06 21:57:29,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 21:57:29,430 INFO L85 PathProgramCache]: Analyzing trace with hash 685845561, now seen corresponding path program 1 times [2023-11-06 21:57:29,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 21:57:29,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651825828] [2023-11-06 21:57:29,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 21:57:29,430 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 21:57:29,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 21:57:29,431 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:29,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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 21:57:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 21:57:29,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 21:57:29,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 21:57:29,696 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 21:57:29,706 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 21:57:29,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,722 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 21:57:29,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,756 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 21:57:29,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,770 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 21:57:29,780 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 21:57:29,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,792 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 21:57:29,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,805 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 21:57:29,818 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 21:57:29,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,830 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 21:57:29,843 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,844 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 21:57:29,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,874 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 21:57:29,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,888 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 21:57:29,898 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 21:57:29,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,910 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 21:57:29,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,924 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 21:57:29,938 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 21:57:29,949 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,949 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 21:57:29,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,962 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 21:57:29,988 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:29,989 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 21:57:30,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,003 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 21:57:30,012 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 21:57:30,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,024 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 21:57:30,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,037 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 21:57:30,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,068 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 21:57:30,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,081 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 21:57:30,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,107 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 21:57:30,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,120 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 21:57:30,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-06 21:57:30,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,188 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 21:57:30,344 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-06 21:57:30,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2023-11-06 21:57:30,355 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 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:57:30,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 21:57:30,460 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 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-06 21:57:30,471 INFO L322 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-06 21:57:30,471 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-11-06 21:57:30,559 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 21:57:30,560 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 21:57:32,725 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul (_ bv4 32) c_~i_AB~0))) (let ((.cse0 (bvadd (_ bv4 32) c_~A~0.offset .cse1))) (and (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_201| (_ BitVec 32))) (or (forall ((v_ArrVal_351 (_ BitVec 32))) (bvule .cse0 (select (store |c_#length| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_201| v_ArrVal_351) c_~A~0.base))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_201|) (_ bv0 1))))) (or (bvule (bvadd c_~A~0.offset .cse1) .cse0) (forall ((|v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_201| (_ BitVec 32))) (not (= (select |c_#valid| |v_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base_201|) (_ bv0 1)))))))) is different from false [2023-11-06 21:57:33,275 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 21:57:33,275 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 21:57:33,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1651825828] [2023-11-06 21:57:33,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1651825828] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 21:57:33,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 21:57:33,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2023-11-06 21:57:33,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165666295] [2023-11-06 21:57:33,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 21:57:33,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 21:57:33,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 21:57:33,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 21:57:33,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=52, Unknown=1, NotChecked=14, Total=90 [2023-11-06 21:57:33,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 798 [2023-11-06 21:57:33,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 106 transitions, 677 flow. Second operand has 10 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states 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 21:57:33,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 21:57:33,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 798 [2023-11-06 21:57:33,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 21:57:47,058 INFO L124 PetriNetUnfolderBase]: 9497/13691 cut-off events. [2023-11-06 21:57:47,058 INFO L125 PetriNetUnfolderBase]: For 3305/3305 co-relation queries the response was YES. [2023-11-06 21:57:47,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35031 conditions, 13691 events. 9497/13691 cut-off events. For 3305/3305 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 77105 event pairs, 5799 based on Foata normal form. 0/8294 useless extension candidates. Maximal degree in co-relation 35000. Up to 6425 conditions per place. [2023-11-06 21:57:47,158 INFO L140 encePairwiseOnDemand]: 778/798 looper letters, 205 selfloop transitions, 69 changer transitions 0/274 dead transitions. [2023-11-06 21:57:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 274 transitions, 2193 flow [2023-11-06 21:57:47,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 21:57:47,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-06 21:57:47,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3460 transitions. [2023-11-06 21:57:47,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27098997493734334 [2023-11-06 21:57:47,173 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3460 transitions. [2023-11-06 21:57:47,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3460 transitions. [2023-11-06 21:57:47,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 21:57:47,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3460 transitions. [2023-11-06 21:57:47,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 216.25) internal successors, (3460), 16 states have internal predecessors, (3460), 0 states have call successors, (0), 0 states 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 21:57:47,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 798.0) internal successors, (13566), 17 states have internal predecessors, (13566), 0 states have call successors, (0), 0 states 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 21:57:47,197 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 798.0) internal successors, (13566), 17 states have internal predecessors, (13566), 0 states have call successors, (0), 0 states 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 21:57:47,197 INFO L175 Difference]: Start difference. First operand has 92 places, 106 transitions, 677 flow. Second operand 16 states and 3460 transitions. [2023-11-06 21:57:47,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 274 transitions, 2193 flow [2023-11-06 21:57:47,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 274 transitions, 2089 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 21:57:47,227 INFO L231 Difference]: Finished difference. Result has 118 places, 162 transitions, 1432 flow [2023-11-06 21:57:47,227 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=798, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1432, PETRI_PLACES=118, PETRI_TRANSITIONS=162} [2023-11-06 21:57:47,228 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 44 predicate places. [2023-11-06 21:57:47,228 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 162 transitions, 1432 flow [2023-11-06 21:57:47,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 206.6) internal successors, (2066), 10 states have internal predecessors, (2066), 0 states have call successors, (0), 0 states 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 21:57:47,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 21:57:47,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 21:57:47,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6547fed1-1796-4983-bd35-e6eae932785a/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