./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:03:22,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:03:22,836 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 23:03:22,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:03:22,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:03:22,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:03:22,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:03:22,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:03:22,870 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:03:22,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:03:22,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:03:22,873 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:03:22,873 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:03:22,874 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:03:22,875 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:03:22,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:03:22,876 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:03:22,877 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:03:22,877 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:03:22,878 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:03:22,884 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:03:22,885 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:03:22,885 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:03:22,886 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:03:22,886 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:03:22,887 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:03:22,887 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:03:22,889 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:03:22,889 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:03:22,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:03:22,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:03:22,895 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:03:22,895 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:03:22,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:03:22,896 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:03:22,896 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:03:22,897 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:03:22,898 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:03:22,898 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_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2023-11-06 23:03:23,222 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:03:23,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:03:23,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:03:23,259 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:03:23,260 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:03:23,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-06 23:03:26,394 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:03:26,676 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:03:26,677 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-06 23:03:26,691 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data/6b49f1e2c/a740e9c716e347d98e9645400e1cdd66/FLAGc27cf264c [2023-11-06 23:03:26,709 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data/6b49f1e2c/a740e9c716e347d98e9645400e1cdd66 [2023-11-06 23:03:26,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:03:26,719 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:03:26,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:26,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:03:26,729 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:03:26,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:26" (1/1) ... [2023-11-06 23:03:26,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6083d9d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:26, skipping insertion in model container [2023-11-06 23:03:26,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:26" (1/1) ... [2023-11-06 23:03:26,781 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:03:27,101 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:27,119 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 23:03:27,119 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4970ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:27, skipping insertion in model container [2023-11-06 23:03:27,120 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:27,120 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-06 23:03:27,122 INFO L158 Benchmark]: Toolchain (without parser) took 402.08ms. Allocated memory is still 155.2MB. Free memory was 111.9MB in the beginning and 100.7MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:03:27,123 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 55.0MB in the beginning and 54.9MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:03:27,124 INFO L158 Benchmark]: CACSL2BoogieTranslator took 397.00ms. Allocated memory is still 155.2MB. Free memory was 111.6MB in the beginning and 100.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-06 23:03:27,126 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 104.9MB. Free memory was 55.0MB in the beginning and 54.9MB in the end (delta: 159.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 397.00ms. Allocated memory is still 155.2MB. Free memory was 111.6MB in the beginning and 100.7MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 125]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:03:29,734 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:03:29,824 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-06 23:03:29,833 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:03:29,834 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:03:29,877 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:03:29,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:03:29,878 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:03:29,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:03:29,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:03:29,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:03:29,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:03:29,882 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:03:29,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:03:29,883 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:03:29,884 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:03:29,885 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:03:29,885 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:03:29,886 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 23:03:29,887 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 23:03:29,887 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 23:03:29,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:03:29,889 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 23:03:29,889 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-06 23:03:29,890 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-06 23:03:29,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:03:29,891 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:03:29,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:03:29,893 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:03:29,893 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:03:29,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:03:29,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:03:29,895 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:03:29,896 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:03:29,896 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-06 23:03:29,897 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-06 23:03:29,897 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:03:29,898 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:03:29,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:03:29,899 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-06 23:03:29,899 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:03:29,900 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_cf25ea11-142a-4cb7-b5a3-0752c786eb32/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2023-11-06 23:03:30,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:03:30,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:03:30,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:03:30,373 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:03:30,374 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:03:30,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-06 23:03:33,528 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:03:33,851 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:03:33,852 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2023-11-06 23:03:33,867 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data/d45c69442/cb4b40af24054432abc5e76c85b22d37/FLAGd97522362 [2023-11-06 23:03:33,884 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/data/d45c69442/cb4b40af24054432abc5e76c85b22d37 [2023-11-06 23:03:33,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:03:33,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:03:33,890 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:33,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:03:33,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:03:33,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:33" (1/1) ... [2023-11-06 23:03:33,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f882073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:33, skipping insertion in model container [2023-11-06 23:03:33,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:03:33" (1/1) ... [2023-11-06 23:03:33,932 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:03:34,204 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:34,226 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-06 23:03:34,244 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:03:34,309 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:34,322 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:03:34,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:03:34,394 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:03:34,395 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:03:34,402 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:03:34,403 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34 WrapperNode [2023-11-06 23:03:34,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:03:34,405 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:34,405 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:03:34,405 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:03:34,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,444 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,505 INFO L138 Inliner]: procedures = 30, calls = 81, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 401 [2023-11-06 23:03:34,507 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:03:34,509 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:03:34,509 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:03:34,509 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:03:34,519 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,519 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,547 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,609 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,612 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:03:34,618 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:03:34,618 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:03:34,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:03:34,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (1/1) ... [2023-11-06 23:03:34,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:03:34,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:03:34,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:03:34,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:03:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:03:34,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-06 23:03:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-06 23:03:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:03:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:03:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-06 23:03:34,707 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:03:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 23:03:34,708 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 23:03:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 23:03:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 23:03:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 23:03:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 23:03:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 23:03:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 23:03:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:03:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:03:34,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:03:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2023-11-06 23:03:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:03:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-06 23:03:34,715 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 23:03:34,914 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:03:34,916 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:03:36,064 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:03:36,360 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:03:36,360 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-06 23:03:36,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:36 BoogieIcfgContainer [2023-11-06 23:03:36,365 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:03:36,369 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:03:36,369 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:03:36,373 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:03:36,373 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:03:33" (1/3) ... [2023-11-06 23:03:36,374 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464d398d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:03:36, skipping insertion in model container [2023-11-06 23:03:36,374 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:03:34" (2/3) ... [2023-11-06 23:03:36,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@464d398d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:03:36, skipping insertion in model container [2023-11-06 23:03:36,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:03:36" (3/3) ... [2023-11-06 23:03:36,377 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2023-11-06 23:03:36,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:03:36,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 58 error locations. [2023-11-06 23:03:36,399 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 23:03:36,603 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 23:03:36,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 480 transitions, 981 flow [2023-11-06 23:03:36,937 INFO L124 PetriNetUnfolderBase]: 37/477 cut-off events. [2023-11-06 23:03:36,938 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:03:36,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 477 events. 37/477 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 778 event pairs, 0 based on Foata normal form. 0/382 useless extension candidates. Maximal degree in co-relation 364. Up to 2 conditions per place. [2023-11-06 23:03:36,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 480 transitions, 981 flow [2023-11-06 23:03:36,971 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 445 places, 472 transitions, 962 flow [2023-11-06 23:03:36,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 23:03:36,991 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 445 places, 472 transitions, 962 flow [2023-11-06 23:03:36,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 445 places, 472 transitions, 962 flow [2023-11-06 23:03:36,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 472 transitions, 962 flow [2023-11-06 23:03:37,108 INFO L124 PetriNetUnfolderBase]: 37/472 cut-off events. [2023-11-06 23:03:37,109 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 23:03:37,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 472 events. 37/472 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 757 event pairs, 0 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 364. Up to 2 conditions per place. [2023-11-06 23:03:37,124 INFO L119 LiptonReduction]: Number of co-enabled transitions 11290 [2023-11-06 23:05:37,304 WARN L293 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 133 DAG size of output: 132 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-06 23:05:47,648 INFO L134 LiptonReduction]: Checked pairs total: 18142 [2023-11-06 23:05:47,648 INFO L136 LiptonReduction]: Total number of compositions: 584 [2023-11-06 23:05:47,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:05:47,668 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;@2b9e8547, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:05:47,668 INFO L358 AbstractCegarLoop]: Starting to check reachability of 93 error locations. [2023-11-06 23:05:47,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 23:05:47,672 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-06 23:05:47,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 23:05:47,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:47,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:05:47,674 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:05:47,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 66319, now seen corresponding path program 1 times [2023-11-06 23:05:47,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:05:47,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874815354] [2023-11-06 23:05:47,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:47,695 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 23:05:47,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:05:47,707 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:05:47,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:05:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,861 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:05:47,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:48,075 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 23:05:48,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,128 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 18 treesize of output 1 [2023-11-06 23:05:48,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,168 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 23:05:48,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,183 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 23:05:48,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,205 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 23:05:48,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,239 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 23:05:48,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,269 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 23:05:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,279 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 23:05:48,293 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,295 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 23:05:48,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,304 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 23:05:48,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,321 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 23:05:48,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,346 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 23:05:48,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,363 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 23:05:48,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-06 23:05:48,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-06 23:05:48,417 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,419 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 23:05:48,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,440 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 23:05:48,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,451 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 23:05:48,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,476 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 23:05:48,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,502 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 23:05:48,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,523 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 23:05:48,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,532 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 23:05:48,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,558 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 23:05:48,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:48,585 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 23:05:48,617 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 23:05:48,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:48,618 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:05:48,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874815354] [2023-11-06 23:05:48,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874815354] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:48,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:48,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:05:48,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038351095] [2023-11-06 23:05:48,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:48,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:48,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:05:48,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:48,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:49,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 400 out of 1064 [2023-11-06 23:05:49,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:49,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:49,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 400 of 1064 [2023-11-06 23:05:49,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:05:55,980 INFO L124 PetriNetUnfolderBase]: 15433/21620 cut-off events. [2023-11-06 23:05:55,981 INFO L125 PetriNetUnfolderBase]: For 322/322 co-relation queries the response was YES. [2023-11-06 23:05:56,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43584 conditions, 21620 events. 15433/21620 cut-off events. For 322/322 co-relation queries the response was YES. Maximal size of possible extension queue 4422. Compared 157249 event pairs, 14465 based on Foata normal form. 0/4338 useless extension candidates. Maximal degree in co-relation 40680. Up to 21587 conditions per place. [2023-11-06 23:05:56,212 INFO L140 encePairwiseOnDemand]: 1039/1064 looper letters, 83 selfloop transitions, 12 changer transitions 0/97 dead transitions. [2023-11-06 23:05:56,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 97 transitions, 402 flow [2023-11-06 23:05:56,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:56,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:05:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1308 transitions. [2023-11-06 23:05:56,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40977443609022557 [2023-11-06 23:05:56,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1308 transitions. [2023-11-06 23:05:56,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1308 transitions. [2023-11-06 23:05:56,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:05:56,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1308 transitions. [2023-11-06 23:05:56,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 436.0) internal successors, (1308), 3 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:56,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:56,287 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:56,289 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 202 flow. Second operand 3 states and 1308 transitions. [2023-11-06 23:05:56,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 97 transitions, 402 flow [2023-11-06 23:05:56,321 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 97 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 23:05:56,326 INFO L231 Difference]: Finished difference. Result has 82 places, 93 transitions, 268 flow [2023-11-06 23:05:56,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=268, PETRI_PLACES=82, PETRI_TRANSITIONS=93} [2023-11-06 23:05:56,333 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -11 predicate places. [2023-11-06 23:05:56,334 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 93 transitions, 268 flow [2023-11-06 23:05:56,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 400.6666666666667) internal successors, (1202), 3 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:56,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:05:56,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-06 23:05:56,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:05:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.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 23:05:56,554 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:05:56,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash 66321, now seen corresponding path program 1 times [2023-11-06 23:05:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:05:56,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96671080] [2023-11-06 23:05:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:56,556 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 23:05:56,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:05:56,558 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:05:56,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:05:56,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:56,671 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:05:56,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:56,708 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 23:05:56,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,721 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 23:05:56,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,735 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 23:05:56,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,756 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 16 treesize of output 1 [2023-11-06 23:05:56,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,767 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 23:05:56,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,779 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 23:05:56,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,800 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 23:05:56,819 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,820 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 23:05:56,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,833 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 23:05:56,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,846 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 23:05:56,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,854 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 23:05:56,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,864 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 23:05:56,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,881 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 23:05:56,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,899 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 23:05:56,910 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,911 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 23:05:56,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,918 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 23:05:56,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,927 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 23:05:56,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,937 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 23:05:56,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:56,978 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 23:05:56,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:57,000 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 23:05:57,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:57,107 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 16 treesize of output 1 [2023-11-06 23:05:57,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:57,116 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 23:05:57,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:57,129 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 23:05:57,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:05:57,147 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 23:05:57,153 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 23:05:57,153 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:57,153 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:05:57,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96671080] [2023-11-06 23:05:57,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96671080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:57,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:57,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 23:05:57,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726980036] [2023-11-06 23:05:57,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:57,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:57,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:05:57,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:57,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:57,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 406 out of 1064 [2023-11-06 23:05:57,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 93 transitions, 268 flow. Second operand has 3 states, 3 states have (on average 406.6666666666667) internal successors, (1220), 3 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:05:57,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:05:57,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 406 of 1064 [2023-11-06 23:05:57,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:06:02,951 INFO L124 PetriNetUnfolderBase]: 15433/21612 cut-off events. [2023-11-06 23:06:02,951 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 23:06:02,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43363 conditions, 21612 events. 15433/21612 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 4422. Compared 157222 event pairs, 14465 based on Foata normal form. 8/4351 useless extension candidates. Maximal degree in co-relation 43269. Up to 21571 conditions per place. [2023-11-06 23:06:03,078 INFO L140 encePairwiseOnDemand]: 1054/1064 looper letters, 77 selfloop transitions, 10 changer transitions 0/89 dead transitions. [2023-11-06 23:06:03,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 89 transitions, 434 flow [2023-11-06 23:06:03,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:03,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:06:03,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1299 transitions. [2023-11-06 23:06:03,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4069548872180451 [2023-11-06 23:06:03,085 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1299 transitions. [2023-11-06 23:06:03,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1299 transitions. [2023-11-06 23:06:03,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:03,087 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1299 transitions. [2023-11-06 23:06:03,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 433.0) internal successors, (1299), 3 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:03,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:03,103 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:03,103 INFO L175 Difference]: Start difference. First operand has 82 places, 93 transitions, 268 flow. Second operand 3 states and 1299 transitions. [2023-11-06 23:06:03,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 89 transitions, 434 flow [2023-11-06 23:06:03,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 410 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:06:03,109 INFO L231 Difference]: Finished difference. Result has 78 places, 89 transitions, 256 flow [2023-11-06 23:06:03,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=78, PETRI_TRANSITIONS=89} [2023-11-06 23:06:03,111 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -15 predicate places. [2023-11-06 23:06:03,111 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 89 transitions, 256 flow [2023-11-06 23:06:03,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 406.6666666666667) internal successors, (1220), 3 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:03,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:06:03,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 23:06:03,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:03,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.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 23:06:03,329 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:06:03,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:03,330 INFO L85 PathProgramCache]: Analyzing trace with hash 2062843, now seen corresponding path program 1 times [2023-11-06 23:06:03,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:03,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258077870] [2023-11-06 23:06:03,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:03,331 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 23:06:03,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:03,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:03,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:03,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:03,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-06 23:06:03,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:03,479 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-06 23:06:03,506 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,507 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 23:06:03,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,518 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 23:06:03,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,531 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 23:06:03,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,544 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 23:06:03,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,553 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 23:06:03,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,572 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 23:06:03,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,598 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 23:06:03,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,637 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 23:06:03,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,660 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 23:06:03,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,675 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 23:06:03,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,696 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 23:06:03,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,712 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 23:06:03,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,737 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 23:06:03,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,752 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 23:06:03,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,761 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 23:06:03,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,775 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 23:06:03,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,784 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 23:06:03,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,797 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 23:06:03,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,808 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 23:06:03,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,822 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 23:06:03,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,830 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 8 treesize of output 1 [2023-11-06 23:06:03,852 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,853 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 23:06:03,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:03,865 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 23:06:03,938 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 23:06:03,938 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:06:04,182 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 23:06:04,183 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:04,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258077870] [2023-11-06 23:06:04,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258077870] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:06:04,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:06:04,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2023-11-06 23:06:04,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041535496] [2023-11-06 23:06:04,184 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:06:04,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:06:04,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:04,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:06:04,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:06:06,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 1064 [2023-11-06 23:06:06,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 89 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:06,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:06:06,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 1064 [2023-11-06 23:06:06,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:06:15,705 INFO L124 PetriNetUnfolderBase]: 15451/21642 cut-off events. [2023-11-06 23:06:15,706 INFO L125 PetriNetUnfolderBase]: For 100/100 co-relation queries the response was YES. [2023-11-06 23:06:15,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43463 conditions, 21642 events. 15451/21642 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 3865. Compared 156264 event pairs, 14465 based on Foata normal form. 0/4361 useless extension candidates. Maximal degree in co-relation 43269. Up to 21595 conditions per place. [2023-11-06 23:06:15,973 INFO L140 encePairwiseOnDemand]: 1048/1064 looper letters, 75 selfloop transitions, 42 changer transitions 0/119 dead transitions. [2023-11-06 23:06:15,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 119 transitions, 634 flow [2023-11-06 23:06:15,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:06:15,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-06 23:06:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2409 transitions. [2023-11-06 23:06:15,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3773496240601504 [2023-11-06 23:06:15,986 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2409 transitions. [2023-11-06 23:06:15,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2409 transitions. [2023-11-06 23:06:15,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:15,989 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2409 transitions. [2023-11-06 23:06:15,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 401.5) internal successors, (2409), 6 states have internal predecessors, (2409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:16,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1064.0) internal successors, (7448), 7 states have internal predecessors, (7448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:16,019 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1064.0) internal successors, (7448), 7 states have internal predecessors, (7448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:16,019 INFO L175 Difference]: Start difference. First operand has 78 places, 89 transitions, 256 flow. Second operand 6 states and 2409 transitions. [2023-11-06 23:06:16,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 119 transitions, 634 flow [2023-11-06 23:06:16,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 590 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:06:16,027 INFO L231 Difference]: Finished difference. Result has 84 places, 119 transitions, 522 flow [2023-11-06 23:06:16,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=84, PETRI_TRANSITIONS=119} [2023-11-06 23:06:16,029 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -9 predicate places. [2023-11-06 23:06:16,030 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 119 transitions, 522 flow [2023-11-06 23:06:16,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 381.0) internal successors, (2286), 6 states have internal predecessors, (2286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:16,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:06:16,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:06:16,053 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:16,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.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 23:06:16,245 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:06:16,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1986717789, now seen corresponding path program 1 times [2023-11-06 23:06:16,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:16,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286117926] [2023-11-06 23:06:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:16,247 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 23:06:16,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:16,248 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:16,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:16,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:06:16,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:16,409 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 5 [2023-11-06 23:06:16,433 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 23:06:16,434 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:16,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:16,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286117926] [2023-11-06 23:06:16,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286117926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:16,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:16,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:06:16,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669083148] [2023-11-06 23:06:16,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:16,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:06:16,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:16,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:06:16,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:06:17,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 413 out of 1064 [2023-11-06 23:06:17,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 119 transitions, 522 flow. Second operand has 4 states, 4 states have (on average 414.25) internal successors, (1657), 4 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:17,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:06:17,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 413 of 1064 [2023-11-06 23:06:17,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:06:22,193 INFO L124 PetriNetUnfolderBase]: 15452/21645 cut-off events. [2023-11-06 23:06:22,193 INFO L125 PetriNetUnfolderBase]: For 106/106 co-relation queries the response was YES. [2023-11-06 23:06:22,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43542 conditions, 21645 events. 15452/21645 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 4086. Compared 156366 event pairs, 14465 based on Foata normal form. 0/4368 useless extension candidates. Maximal degree in co-relation 43401. Up to 21608 conditions per place. [2023-11-06 23:06:22,315 INFO L140 encePairwiseOnDemand]: 1059/1064 looper letters, 108 selfloop transitions, 12 changer transitions 0/122 dead transitions. [2023-11-06 23:06:22,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 122 transitions, 768 flow [2023-11-06 23:06:22,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:06:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 23:06:22,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1733 transitions. [2023-11-06 23:06:22,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40718984962406013 [2023-11-06 23:06:22,328 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1733 transitions. [2023-11-06 23:06:22,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1733 transitions. [2023-11-06 23:06:22,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:22,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1733 transitions. [2023-11-06 23:06:22,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 433.25) internal successors, (1733), 4 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:22,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:22,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:22,357 INFO L175 Difference]: Start difference. First operand has 84 places, 119 transitions, 522 flow. Second operand 4 states and 1733 transitions. [2023-11-06 23:06:22,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 122 transitions, 768 flow [2023-11-06 23:06:22,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 122 transitions, 702 flow, removed 24 selfloop flow, removed 1 redundant places. [2023-11-06 23:06:22,366 INFO L231 Difference]: Finished difference. Result has 87 places, 121 transitions, 497 flow [2023-11-06 23:06:22,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=456, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=87, PETRI_TRANSITIONS=121} [2023-11-06 23:06:22,369 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -6 predicate places. [2023-11-06 23:06:22,369 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 121 transitions, 497 flow [2023-11-06 23:06:22,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 414.25) internal successors, (1657), 4 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:22,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:06:22,372 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 23:06:22,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:06:22,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.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 23:06:22,585 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:06:22,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:22,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1986717788, now seen corresponding path program 1 times [2023-11-06 23:06:22,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:22,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194175666] [2023-11-06 23:06:22,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:06:22,586 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 23:06:22,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:22,587 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:22,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:06:22,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:06:22,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:22,746 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 23:06:22,753 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 23:06:22,753 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:06:22,753 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:22,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194175666] [2023-11-06 23:06:22,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194175666] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:06:22,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:06:22,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:06:22,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612541519] [2023-11-06 23:06:22,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:06:22,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:06:22,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:22,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:06:22,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:06:23,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 421 out of 1064 [2023-11-06 23:06:23,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 121 transitions, 497 flow. Second operand has 3 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:23,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:06:23,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 421 of 1064 [2023-11-06 23:06:23,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:06:28,017 INFO L124 PetriNetUnfolderBase]: 15452/21643 cut-off events. [2023-11-06 23:06:28,017 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-06 23:06:28,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43523 conditions, 21643 events. 15452/21643 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 4086. Compared 156382 event pairs, 14465 based on Foata normal form. 2/4375 useless extension candidates. Maximal degree in co-relation 43392. Up to 21612 conditions per place. [2023-11-06 23:06:28,309 INFO L140 encePairwiseOnDemand]: 1061/1064 looper letters, 111 selfloop transitions, 7 changer transitions 0/120 dead transitions. [2023-11-06 23:06:28,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 120 transitions, 731 flow [2023-11-06 23:06:28,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:06:28,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 23:06:28,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1340 transitions. [2023-11-06 23:06:28,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4197994987468672 [2023-11-06 23:06:28,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1340 transitions. [2023-11-06 23:06:28,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1340 transitions. [2023-11-06 23:06:28,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:06:28,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1340 transitions. [2023-11-06 23:06:28,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 446.6666666666667) internal successors, (1340), 3 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:28,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:28,331 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:28,331 INFO L175 Difference]: Start difference. First operand has 87 places, 121 transitions, 497 flow. Second operand 3 states and 1340 transitions. [2023-11-06 23:06:28,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 120 transitions, 731 flow [2023-11-06 23:06:28,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 120 transitions, 712 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-06 23:06:28,339 INFO L231 Difference]: Finished difference. Result has 86 places, 120 transitions, 490 flow [2023-11-06 23:06:28,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=490, PETRI_PLACES=86, PETRI_TRANSITIONS=120} [2023-11-06 23:06:28,340 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, -7 predicate places. [2023-11-06 23:06:28,340 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 120 transitions, 490 flow [2023-11-06 23:06:28,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 422.6666666666667) internal successors, (1268), 3 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:28,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:06:28,341 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-06 23:06:28,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-06 23:06:28,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.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 23:06:28,544 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:06:28,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:06:28,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1331518991, now seen corresponding path program 2 times [2023-11-06 23:06:28,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:06:28,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1220255609] [2023-11-06 23:06:28,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:06:28,545 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 23:06:28,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:06:28,546 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:28,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:06:28,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:06:28,712 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:06:28,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-06 23:06:28,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:06:28,748 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 23:06:28,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,786 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 23:06:28,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,805 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 23:06:28,826 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,826 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 23:06:28,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,852 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 23:06:28,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,865 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 23:06:28,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,880 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 23:06:28,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,888 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 23:06:28,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,898 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 23:06:28,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,910 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 23:06:28,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,925 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 23:06:28,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,947 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 23:06:28,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,960 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 23:06:28,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,971 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 23:06:28,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:28,984 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 23:06:29,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,005 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 23:06:29,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,017 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 23:06:29,025 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,025 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 23:06:29,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,041 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 23:06:29,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,063 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 23:06:29,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,072 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 23:06:29,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,082 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 23:06:29,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,091 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 23:06:29,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-06 23:06:29,101 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 23:06:29,290 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 23:06:29,290 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:06:30,023 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 23:06:30,024 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:06:30,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1220255609] [2023-11-06 23:06:30,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1220255609] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:06:30,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-06 23:06:30,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2023-11-06 23:06:30,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095617619] [2023-11-06 23:06:30,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-06 23:06:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 23:06:30,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:06:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 23:06:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-11-06 23:06:42,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 384 out of 1064 [2023-11-06 23:06:42,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 120 transitions, 490 flow. Second operand has 12 states, 12 states have (on average 385.0) internal successors, (4620), 12 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:06:42,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:06:42,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 384 of 1064 [2023-11-06 23:06:42,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 23:06:46,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:48,876 WARN L539 Checker$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 23:06:51,741 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:54,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:56,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:57,790 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:06:59,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:01,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:02,602 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:04,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:08,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:10,367 WARN L539 Checker$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 23:07:11,661 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:13,663 WARN L539 Checker$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 23:07:16,609 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:18,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:07:23,380 INFO L124 PetriNetUnfolderBase]: 15485/21700 cut-off events. [2023-11-06 23:07:23,380 INFO L125 PetriNetUnfolderBase]: For 189/189 co-relation queries the response was YES. [2023-11-06 23:07:23,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43759 conditions, 21700 events. 15485/21700 cut-off events. For 189/189 co-relation queries the response was YES. Maximal size of possible extension queue 4087. Compared 156841 event pairs, 14465 based on Foata normal form. 18/4422 useless extension candidates. Maximal degree in co-relation 43458. Up to 21620 conditions per place. [2023-11-06 23:07:23,509 INFO L140 encePairwiseOnDemand]: 1048/1064 looper letters, 79 selfloop transitions, 96 changer transitions 0/177 dead transitions. [2023-11-06 23:07:23,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 177 transitions, 1209 flow [2023-11-06 23:07:23,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:07:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-06 23:07:23,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 6719 transitions. [2023-11-06 23:07:23,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37146174259177356 [2023-11-06 23:07:23,539 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 6719 transitions. [2023-11-06 23:07:23,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 6719 transitions. [2023-11-06 23:07:23,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 23:07:23,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 6719 transitions. [2023-11-06 23:07:23,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 395.2352941176471) internal successors, (6719), 17 states have internal predecessors, (6719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:23,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:23,604 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1064.0) internal successors, (19152), 18 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:23,604 INFO L175 Difference]: Start difference. First operand has 86 places, 120 transitions, 490 flow. Second operand 17 states and 6719 transitions. [2023-11-06 23:07:23,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 177 transitions, 1209 flow [2023-11-06 23:07:23,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 177 transitions, 1183 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 23:07:23,612 INFO L231 Difference]: Finished difference. Result has 109 places, 174 transitions, 1109 flow [2023-11-06 23:07:23,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=476, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1109, PETRI_PLACES=109, PETRI_TRANSITIONS=174} [2023-11-06 23:07:23,613 INFO L281 CegarLoopForPetriNet]: 93 programPoint places, 16 predicate places. [2023-11-06 23:07:23,613 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 174 transitions, 1109 flow [2023-11-06 23:07:23,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 385.0) internal successors, (4620), 12 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:23,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 23:07:23,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-06 23:07:23,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:07:23,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -theory.fp.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 23:07:23,824 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 90 more)] === [2023-11-06 23:07:23,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:07:23,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1458717208, now seen corresponding path program 1 times [2023-11-06 23:07:23,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-06 23:07:23,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1216877364] [2023-11-06 23:07:23,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:07:23,825 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 23:07:23,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat [2023-11-06 23:07:23,826 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:07:23,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf25ea11-142a-4cb7-b5a3-0752c786eb32/bin/uautomizer-verify-WvqO1wxjHP/mathsat -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 23:07:23,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:07:23,946 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 23:07:23,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:07:23,998 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 5 [2023-11-06 23:07:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:07:24,031 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:07:24,031 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-06 23:07:24,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1216877364] [2023-11-06 23:07:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1216877364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:07:24,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:07:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 23:07:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11784384] [2023-11-06 23:07:24,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:07:24,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:07:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-06 23:07:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:07:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:07:25,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 1064 [2023-11-06 23:07:25,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 174 transitions, 1109 flow. Second operand has 5 states, 5 states have (on average 388.2) internal successors, (1941), 5 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 23:07:25,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 23:07:25,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 1064 [2023-11-06 23:07:25,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand