./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 38b53e6a 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_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R --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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:22:30,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:30,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:30,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:30,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:30,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:30,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:30,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:30,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:30,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:30,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:30,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:30,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:30,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:30,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:30,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:30,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:30,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:30,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:30,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:30,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:30,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:30,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:30,704 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:30,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:30,708 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:30,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:30,709 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:30,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:30,711 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:30,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:30,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:30,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:30,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:30,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:30,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:30,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:30,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:30,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:30,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:30,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:30,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-25 18:22:30,744 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:30,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:30,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:30,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:30,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:30,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:30,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:30,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:30,748 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:30,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:30,748 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:22:30,749 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:22:30,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:22:30,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:22:30,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:30,750 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:22:30,750 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:22:30,750 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:22:30,751 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:30,751 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:22:30,751 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:22:30,752 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:30,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:30,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:30,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:30,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:30,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:30,754 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:30,754 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 18:22:30,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 18:22:30,755 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:30,755 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:30,755 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:30,755 INFO L138 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_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-25 18:22:31,128 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:31,165 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:31,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:31,171 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:31,171 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:31,173 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-25 18:22:34,379 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:34,653 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:34,674 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-25 18:22:34,683 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data/afdfa26d2/89646f75aa5041e2bde2471cab1ea8b1/FLAG40e86531f [2022-11-25 18:22:34,731 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data/afdfa26d2/89646f75aa5041e2bde2471cab1ea8b1 [2022-11-25 18:22:34,734 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:34,736 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:34,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:34,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:34,742 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:34,743 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:34" (1/1) ... [2022-11-25 18:22:34,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b33fd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:34, skipping insertion in model container [2022-11-25 18:22:34,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:34" (1/1) ... [2022-11-25 18:22:34,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:34,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:34,960 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-25 18:22:34,971 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:34,984 ERROR L326 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) [2022-11-25 18:22:34,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@716a8295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:34, skipping insertion in model container [2022-11-25 18:22:34,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:34,985 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-11-25 18:22:34,987 INFO L158 Benchmark]: Toolchain (without parser) took 250.27ms. Allocated memory is still 151.0MB. Free memory was 124.1MB in the beginning and 113.7MB in the end (delta: 10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 18:22:34,988 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 83.3MB in the beginning and 83.2MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 18:22:34,988 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.61ms. Allocated memory is still 151.0MB. Free memory was 123.2MB in the beginning and 113.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-25 18:22:34,990 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory was 83.3MB in the beginning and 83.2MB in the end (delta: 140.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.61ms. Allocated memory is still 151.0MB. Free memory was 123.2MB in the beginning and 113.7MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 106]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R --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 f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 18:22:37,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 18:22:37,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 18:22:37,438 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 18:22:37,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 18:22:37,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 18:22:37,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 18:22:37,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 18:22:37,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 18:22:37,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 18:22:37,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 18:22:37,467 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 18:22:37,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 18:22:37,472 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 18:22:37,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 18:22:37,477 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 18:22:37,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 18:22:37,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 18:22:37,483 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 18:22:37,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 18:22:37,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 18:22:37,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 18:22:37,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 18:22:37,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 18:22:37,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 18:22:37,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 18:22:37,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 18:22:37,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 18:22:37,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 18:22:37,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 18:22:37,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 18:22:37,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 18:22:37,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 18:22:37,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 18:22:37,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 18:22:37,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 18:22:37,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 18:22:37,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 18:22:37,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 18:22:37,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 18:22:37,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 18:22:37,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-25 18:22:37,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 18:22:37,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 18:22:37,572 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 18:22:37,572 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 18:22:37,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 18:22:37,573 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 18:22:37,574 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 18:22:37,575 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 18:22:37,575 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 18:22:37,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 18:22:37,577 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 18:22:37,577 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 18:22:37,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 18:22:37,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 18:22:37,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 18:22:37,578 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-25 18:22:37,578 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-25 18:22:37,579 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-25 18:22:37,579 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 18:22:37,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-25 18:22:37,579 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-25 18:22:37,580 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-25 18:22:37,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 18:22:37,580 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 18:22:37,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 18:22:37,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 18:22:37,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 18:22:37,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:37,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 18:22:37,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 18:22:37,582 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-25 18:22:37,582 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-25 18:22:37,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 18:22:37,583 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 18:22:37,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 18:22:37,583 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-11-25 18:22:37,584 INFO L138 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_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91e7b856fd6bf43c568f48d1703ed519fbb708e5c1360b96f8534e6fa4ed35d [2022-11-25 18:22:37,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 18:22:37,980 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 18:22:37,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 18:22:37,988 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 18:22:37,989 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 18:22:37,991 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-25 18:22:41,162 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 18:22:41,416 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 18:22:41,417 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2022-11-25 18:22:41,430 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data/f6e703cc5/f36b57c4e8e24e5fb25a8876ecc0c6aa/FLAG9a6ade136 [2022-11-25 18:22:41,449 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/data/f6e703cc5/f36b57c4e8e24e5fb25a8876ecc0c6aa [2022-11-25 18:22:41,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 18:22:41,461 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 18:22:41,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:41,465 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 18:22:41,468 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 18:22:41,469 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,471 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e5e653d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41, skipping insertion in model container [2022-11-25 18:22:41,472 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,480 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 18:22:41,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:41,701 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-25 18:22:41,712 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:41,730 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-25 18:22:41,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 18:22:41,766 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-25 18:22:41,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:41,801 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 18:22:41,845 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2598,2611] [2022-11-25 18:22:41,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 18:22:41,881 INFO L208 MainTranslator]: Completed translation [2022-11-25 18:22:41,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41 WrapperNode [2022-11-25 18:22:41,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 18:22:41,884 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:41,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 18:22:41,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 18:22:41,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,955 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 190 [2022-11-25 18:22:41,956 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 18:22:41,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 18:22:41,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 18:22:41,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 18:22:41,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:41,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:42,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:42,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:42,023 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:42,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 18:22:42,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 18:22:42,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 18:22:42,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 18:22:42,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (1/1) ... [2022-11-25 18:22:42,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 18:22:42,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 18:22:42,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 18:22:42,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 18:22:42,185 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 18:22:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-25 18:22:42,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-25 18:22:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-25 18:22:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-25 18:22:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-25 18:22:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-25 18:22:42,187 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-25 18:22:42,187 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-25 18:22:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-25 18:22:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 18:22:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 18:22:42,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 18:22:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-25 18:22:42,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-25 18:22:42,190 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-25 18:22:42,364 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 18:22:42,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 18:22:43,272 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 18:22:43,282 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 18:22:43,283 INFO L300 CfgBuilder]: Removed 7 assume(true) statements. [2022-11-25 18:22:43,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:43 BoogieIcfgContainer [2022-11-25 18:22:43,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 18:22:43,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 18:22:43,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 18:22:43,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 18:22:43,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 06:22:41" (1/3) ... [2022-11-25 18:22:43,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d750e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:43, skipping insertion in model container [2022-11-25 18:22:43,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 06:22:41" (2/3) ... [2022-11-25 18:22:43,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d750e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 06:22:43, skipping insertion in model container [2022-11-25 18:22:43,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 06:22:43" (3/3) ... [2022-11-25 18:22:43,295 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2022-11-25 18:22:43,316 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 18:22:43,316 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 44 error locations. [2022-11-25 18:22:43,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-25 18:22:43,515 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-25 18:22:43,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 322 places, 337 transitions, 698 flow [2022-11-25 18:22:43,755 INFO L130 PetriNetUnfolder]: 25/334 cut-off events. [2022-11-25 18:22:43,755 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:22:43,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 334 events. 25/334 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 388 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 259. Up to 2 conditions per place. [2022-11-25 18:22:43,765 INFO L82 GeneralOperation]: Start removeDead. Operand has 322 places, 337 transitions, 698 flow [2022-11-25 18:22:43,780 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 314 places, 329 transitions, 676 flow [2022-11-25 18:22:43,785 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-25 18:22:43,809 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 314 places, 329 transitions, 676 flow [2022-11-25 18:22:43,811 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 314 places, 329 transitions, 676 flow [2022-11-25 18:22:43,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 314 places, 329 transitions, 676 flow [2022-11-25 18:22:43,891 INFO L130 PetriNetUnfolder]: 25/329 cut-off events. [2022-11-25 18:22:43,892 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-25 18:22:43,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 342 conditions, 329 events. 25/329 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 389 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 259. Up to 2 conditions per place. [2022-11-25 18:22:43,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 4560 [2022-11-25 18:23:31,178 INFO L134 LiptonReduction]: Checked pairs total: 12952 [2022-11-25 18:23:31,179 INFO L136 LiptonReduction]: Total number of compositions: 349 [2022-11-25 18:23:31,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 18:23:31,200 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;@76f3d10b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 18:23:31,200 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-11-25 18:23:31,203 INFO L130 PetriNetUnfolder]: 1/2 cut-off events. [2022-11-25 18:23:31,204 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-25 18:23:31,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:31,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:23:31,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:23:31,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:31,211 INFO L85 PathProgramCache]: Analyzing trace with hash 39050, now seen corresponding path program 1 times [2022-11-25 18:23:31,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:31,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402175415] [2022-11-25 18:23:31,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:31,228 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 [2022-11-25 18:23:31,229 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:31,234 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:23:31,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:23:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:31,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 18:23:31,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:31,658 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:23:31,659 INFO L350 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 18:23:31,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:31,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:31,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:31,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402175415] [2022-11-25 18:23:31,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402175415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:31,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:31,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:23:31,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927514430] [2022-11-25 18:23:31,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:31,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:31,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:31,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:32,456 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 686 [2022-11-25 18:23:32,460 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:32,460 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:32,460 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 686 [2022-11-25 18:23:32,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:39,792 INFO L130 PetriNetUnfolder]: 37500/47447 cut-off events. [2022-11-25 18:23:39,792 INFO L131 PetriNetUnfolder]: For 492/492 co-relation queries the response was YES. [2022-11-25 18:23:39,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95267 conditions, 47447 events. 37500/47447 cut-off events. For 492/492 co-relation queries the response was YES. Maximal size of possible extension queue 3646. Compared 266437 event pairs, 21864 based on Foata normal form. 0/13025 useless extension candidates. Maximal degree in co-relation 44178. Up to 23629 conditions per place. [2022-11-25 18:23:40,111 INFO L137 encePairwiseOnDemand]: 673/686 looper letters, 131 selfloop transitions, 8 changer transitions 0/145 dead transitions. [2022-11-25 18:23:40,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 145 transitions, 604 flow [2022-11-25 18:23:40,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:40,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:23:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1024 transitions. [2022-11-25 18:23:40,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4975704567541302 [2022-11-25 18:23:40,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1024 transitions. [2022-11-25 18:23:40,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1024 transitions. [2022-11-25 18:23:40,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:40,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1024 transitions. [2022-11-25 18:23:40,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 341.3333333333333) internal successors, (1024), 3 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:40,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:40,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:40,167 INFO L175 Difference]: Start difference. First operand has 82 places, 79 transitions, 176 flow. Second operand 3 states and 1024 transitions. [2022-11-25 18:23:40,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 145 transitions, 604 flow [2022-11-25 18:23:40,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 145 transitions, 580 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-25 18:23:40,195 INFO L231 Difference]: Finished difference. Result has 79 places, 85 transitions, 230 flow [2022-11-25 18:23:40,197 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=79, PETRI_TRANSITIONS=85} [2022-11-25 18:23:40,202 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -3 predicate places. [2022-11-25 18:23:40,202 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 85 transitions, 230 flow [2022-11-25 18:23:40,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:40,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:40,204 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1] [2022-11-25 18:23:40,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-25 18:23:40,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:40,434 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:23:40,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:40,445 INFO L85 PathProgramCache]: Analyzing trace with hash 39051, now seen corresponding path program 1 times [2022-11-25 18:23:40,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:40,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1996370566] [2022-11-25 18:23:40,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:40,449 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:40,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:40,450 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:23:40,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:23:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:40,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 18:23:40,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:40,631 INFO L321 Elim1Store]: treesize reduction 84, result has 33.9 percent of original size [2022-11-25 18:23:40,632 INFO L350 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 3 case distinctions, treesize of input 15 treesize of output 50 [2022-11-25 18:23:40,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:40,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:23:40,657 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:40,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1996370566] [2022-11-25 18:23:40,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1996370566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:23:40,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:23:40,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-25 18:23:40,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652229366] [2022-11-25 18:23:40,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:23:40,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 18:23:40,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:40,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 18:23:40,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 18:23:40,981 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 686 [2022-11-25 18:23:40,982 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 85 transitions, 230 flow. Second operand has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:40,982 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:40,982 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 686 [2022-11-25 18:23:40,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:46,198 INFO L130 PetriNetUnfolder]: 37607/47539 cut-off events. [2022-11-25 18:23:46,199 INFO L131 PetriNetUnfolder]: For 102/102 co-relation queries the response was YES. [2022-11-25 18:23:46,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95047 conditions, 47539 events. 37607/47539 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 3965. Compared 267642 event pairs, 21894 based on Foata normal form. 6/12859 useless extension candidates. Maximal degree in co-relation 47498. Up to 47255 conditions per place. [2022-11-25 18:23:46,495 INFO L137 encePairwiseOnDemand]: 681/686 looper letters, 74 selfloop transitions, 1 changer transitions 0/81 dead transitions. [2022-11-25 18:23:46,495 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 81 transitions, 372 flow [2022-11-25 18:23:46,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:23:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:23:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 951 transitions. [2022-11-25 18:23:46,500 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4620991253644315 [2022-11-25 18:23:46,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 951 transitions. [2022-11-25 18:23:46,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 951 transitions. [2022-11-25 18:23:46,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:23:46,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 951 transitions. [2022-11-25 18:23:46,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 317.0) internal successors, (951), 3 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:46,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:46,509 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:46,510 INFO L175 Difference]: Start difference. First operand has 79 places, 85 transitions, 230 flow. Second operand 3 states and 951 transitions. [2022-11-25 18:23:46,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 81 transitions, 372 flow [2022-11-25 18:23:46,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-25 18:23:46,515 INFO L231 Difference]: Finished difference. Result has 75 places, 81 transitions, 208 flow [2022-11-25 18:23:46,515 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=75, PETRI_TRANSITIONS=81} [2022-11-25 18:23:46,516 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -7 predicate places. [2022-11-25 18:23:46,517 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 81 transitions, 208 flow [2022-11-25 18:23:46,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:46,519 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:23:46,519 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-11-25 18:23:46,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:23:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:23:46,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:23:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:23:46,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1217236, now seen corresponding path program 1 times [2022-11-25 18:23:46,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:23:46,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518478713] [2022-11-25 18:23:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:23:46,736 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 [2022-11-25 18:23:46,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:23:46,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:23:46,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:23:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:23:46,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-25 18:23:46,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:23:46,980 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:23:46,980 INFO L350 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 18:23:47,062 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:47,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:23:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:23:47,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:23:47,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518478713] [2022-11-25 18:23:47,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518478713] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:23:47,328 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:23:47,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4 [2022-11-25 18:23:47,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011441265] [2022-11-25 18:23:47,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:23:47,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 18:23:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:23:47,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 18:23:47,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-25 18:23:49,642 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 273 out of 686 [2022-11-25 18:23:49,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 81 transitions, 208 flow. Second operand has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:23:49,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:23:49,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 273 of 686 [2022-11-25 18:23:49,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:23:59,695 INFO L130 PetriNetUnfolder]: 56208/71126 cut-off events. [2022-11-25 18:23:59,696 INFO L131 PetriNetUnfolder]: For 125/125 co-relation queries the response was YES. [2022-11-25 18:23:59,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142176 conditions, 71126 events. 56208/71126 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 5259. Compared 413533 event pairs, 32781 based on Foata normal form. 0/19896 useless extension candidates. Maximal degree in co-relation 142168. Up to 23634 conditions per place. [2022-11-25 18:24:00,004 INFO L137 encePairwiseOnDemand]: 671/686 looper letters, 179 selfloop transitions, 35 changer transitions 0/220 dead transitions. [2022-11-25 18:24:00,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 220 transitions, 968 flow [2022-11-25 18:24:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 18:24:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-25 18:24:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1864 transitions. [2022-11-25 18:24:00,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45286686103012636 [2022-11-25 18:24:00,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1864 transitions. [2022-11-25 18:24:00,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1864 transitions. [2022-11-25 18:24:00,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:00,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1864 transitions. [2022-11-25 18:24:00,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 310.6666666666667) internal successors, (1864), 6 states have internal predecessors, (1864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:00,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:00,037 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 686.0) internal successors, (4802), 7 states have internal predecessors, (4802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:00,037 INFO L175 Difference]: Start difference. First operand has 75 places, 81 transitions, 208 flow. Second operand 6 states and 1864 transitions. [2022-11-25 18:24:00,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 220 transitions, 968 flow [2022-11-25 18:24:00,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 220 transitions, 967 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:00,041 INFO L231 Difference]: Finished difference. Result has 83 places, 108 transitions, 470 flow [2022-11-25 18:24:00,042 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=470, PETRI_PLACES=83, PETRI_TRANSITIONS=108} [2022-11-25 18:24:00,042 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2022-11-25 18:24:00,043 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 108 transitions, 470 flow [2022-11-25 18:24:00,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 274.0) internal successors, (1644), 6 states have internal predecessors, (1644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:00,044 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:00,044 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:24:00,060 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:24:00,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:00,255 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:24:00,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1171766222, now seen corresponding path program 1 times [2022-11-25 18:24:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:00,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [268741957] [2022-11-25 18:24:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:00,257 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 [2022-11-25 18:24:00,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:00,259 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:24:00,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:24:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:00,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-25 18:24:00,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:00,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:00,526 INFO L321 Elim1Store]: treesize reduction 86, result has 25.9 percent of original size [2022-11-25 18:24:00,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 38 treesize of output 55 [2022-11-25 18:24:00,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:00,882 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-25 18:24:00,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2022-11-25 18:24:01,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:01,318 INFO L321 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-25 18:24:01,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 45 treesize of output 60 [2022-11-25 18:24:01,932 INFO L321 Elim1Store]: treesize reduction 28, result has 50.9 percent of original size [2022-11-25 18:24:01,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 59 treesize of output 84 [2022-11-25 18:24:02,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:02,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:02,337 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:02,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [268741957] [2022-11-25 18:24:02,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [268741957] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:02,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:02,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 18:24:02,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976295794] [2022-11-25 18:24:02,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:02,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 18:24:02,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:02,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 18:24:02,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-25 18:24:04,612 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 686 [2022-11-25 18:24:04,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 470 flow. Second operand has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:04,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:04,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 686 [2022-11-25 18:24:04,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:10,307 INFO L130 PetriNetUnfolder]: 43109/55010 cut-off events. [2022-11-25 18:24:10,307 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2022-11-25 18:24:10,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110065 conditions, 55010 events. 43109/55010 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 4263. Compared 321876 event pairs, 24930 based on Foata normal form. 0/16074 useless extension candidates. Maximal degree in co-relation 110052. Up to 54584 conditions per place. [2022-11-25 18:24:10,559 INFO L137 encePairwiseOnDemand]: 683/686 looper letters, 97 selfloop transitions, 1 changer transitions 0/104 dead transitions. [2022-11-25 18:24:10,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 104 transitions, 646 flow [2022-11-25 18:24:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:24:10,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 950 transitions. [2022-11-25 18:24:10,564 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4616132167152575 [2022-11-25 18:24:10,564 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 950 transitions. [2022-11-25 18:24:10,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 950 transitions. [2022-11-25 18:24:10,565 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:10,565 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 950 transitions. [2022-11-25 18:24:10,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 316.6666666666667) internal successors, (950), 3 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:10,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:10,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:10,575 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 470 flow. Second operand 3 states and 950 transitions. [2022-11-25 18:24:10,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 104 transitions, 646 flow [2022-11-25 18:24:10,577 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 104 transitions, 605 flow, removed 12 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:10,580 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 411 flow [2022-11-25 18:24:10,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2022-11-25 18:24:10,581 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2022-11-25 18:24:10,581 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 411 flow [2022-11-25 18:24:10,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 295.0) internal successors, (1475), 5 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:10,582 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:10,583 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-11-25 18:24:10,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:24:10,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:10,795 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:24:10,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:10,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1171766223, now seen corresponding path program 1 times [2022-11-25 18:24:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:10,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005347351] [2022-11-25 18:24:10,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:24:10,796 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 [2022-11-25 18:24:10,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:10,798 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:24:10,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:24:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:24:10,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 18:24:10,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:10,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:10,995 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:11,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:11,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:11,088 INFO L321 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-11-25 18:24:11,088 INFO L350 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 2 case distinctions, treesize of input 15 treesize of output 29 [2022-11-25 18:24:11,120 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-25 18:24:11,120 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-11-25 18:24:11,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:11,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:24:11,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:11,230 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:24:11,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:24:11,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-25 18:24:11,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:11,300 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:24:11,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:11,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005347351] [2022-11-25 18:24:11,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005347351] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:24:11,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:24:11,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:24:11,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218283571] [2022-11-25 18:24:11,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:24:11,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:24:11,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:11,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:24:11,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:24:12,016 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 686 [2022-11-25 18:24:12,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 411 flow. Second operand has 4 states, 4 states have (on average 304.25) internal successors, (1217), 4 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:12,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:12,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 686 [2022-11-25 18:24:12,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:16,008 INFO L130 PetriNetUnfolder]: 29796/38694 cut-off events. [2022-11-25 18:24:16,008 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-11-25 18:24:16,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77400 conditions, 38694 events. 29796/38694 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 2852. Compared 227923 event pairs, 17019 based on Foata normal form. 0/12852 useless extension candidates. Maximal degree in co-relation 77386. Up to 38268 conditions per place. [2022-11-25 18:24:16,187 INFO L137 encePairwiseOnDemand]: 683/686 looper letters, 93 selfloop transitions, 1 changer transitions 0/100 dead transitions. [2022-11-25 18:24:16,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 100 transitions, 579 flow [2022-11-25 18:24:16,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 18:24:16,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-25 18:24:16,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 975 transitions. [2022-11-25 18:24:16,191 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.4737609329446064 [2022-11-25 18:24:16,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 975 transitions. [2022-11-25 18:24:16,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 975 transitions. [2022-11-25 18:24:16,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:24:16,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 975 transitions. [2022-11-25 18:24:16,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 325.0) internal successors, (975), 3 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,201 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 686.0) internal successors, (2744), 4 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,202 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 411 flow. Second operand 3 states and 975 transitions. [2022-11-25 18:24:16,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 100 transitions, 579 flow [2022-11-25 18:24:16,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 100 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:24:16,206 INFO L231 Difference]: Finished difference. Result has 81 places, 100 transitions, 392 flow [2022-11-25 18:24:16,206 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=392, PETRI_PLACES=81, PETRI_TRANSITIONS=100} [2022-11-25 18:24:16,207 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, -1 predicate places. [2022-11-25 18:24:16,207 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 100 transitions, 392 flow [2022-11-25 18:24:16,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 304.25) internal successors, (1217), 4 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:16,208 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:24:16,209 INFO L209 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2022-11-25 18:24:16,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-25 18:24:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:24:16,415 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:24:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:24:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1909578506, now seen corresponding path program 2 times [2022-11-25 18:24:16,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:24:16,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286827756] [2022-11-25 18:24:16,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-25 18:24:16,416 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 [2022-11-25 18:24:16,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:24:16,418 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:24:16,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:24:16,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-25 18:24:16,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-25 18:24:16,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-25 18:24:16,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:24:16,688 INFO L321 Elim1Store]: treesize reduction 78, result has 32.2 percent of original size [2022-11-25 18:24:16,689 INFO L350 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 3 case distinctions, treesize of input 17 treesize of output 44 [2022-11-25 18:24:16,876 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:16,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 18:24:17,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:24:17,591 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:24:17,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286827756] [2022-11-25 18:24:17,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286827756] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 18:24:17,592 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-25 18:24:17,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10 [2022-11-25 18:24:17,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705079192] [2022-11-25 18:24:17,592 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-25 18:24:17,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-25 18:24:17,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:24:17,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-25 18:24:17,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-25 18:24:29,420 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 277 out of 686 [2022-11-25 18:24:29,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 100 transitions, 392 flow. Second operand has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:24:29,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:24:29,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 277 of 686 [2022-11-25 18:24:29,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-25 18:24:32,961 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 [] [2022-11-25 18:24:34,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:36,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:38,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:40,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:41,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:43,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:45,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:48,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:51,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:53,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:55,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:57,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:24:59,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:25:00,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:25:02,222 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 18:25:19,980 INFO L130 PetriNetUnfolder]: 88624/115350 cut-off events. [2022-11-25 18:25:19,980 INFO L131 PetriNetUnfolder]: For 428/428 co-relation queries the response was YES. [2022-11-25 18:25:20,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230511 conditions, 115350 events. 88624/115350 cut-off events. For 428/428 co-relation queries the response was YES. Maximal size of possible extension queue 5196. Compared 736337 event pairs, 50929 based on Foata normal form. 20/39877 useless extension candidates. Maximal degree in co-relation 230496. Up to 12775 conditions per place. [2022-11-25 18:25:20,471 INFO L137 encePairwiseOnDemand]: 673/686 looper letters, 481 selfloop transitions, 69 changer transitions 0/556 dead transitions. [2022-11-25 18:25:20,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 556 transitions, 2652 flow [2022-11-25 18:25:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-25 18:25:20,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-11-25 18:25:20,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 4725 transitions. [2022-11-25 18:25:20,486 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.45918367346938777 [2022-11-25 18:25:20,486 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 4725 transitions. [2022-11-25 18:25:20,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 4725 transitions. [2022-11-25 18:25:20,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-25 18:25:20,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 4725 transitions. [2022-11-25 18:25:20,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 315.0) internal successors, (4725), 15 states have internal predecessors, (4725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:20,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 686.0) internal successors, (10976), 16 states have internal predecessors, (10976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:20,522 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 686.0) internal successors, (10976), 16 states have internal predecessors, (10976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:20,522 INFO L175 Difference]: Start difference. First operand has 81 places, 100 transitions, 392 flow. Second operand 15 states and 4725 transitions. [2022-11-25 18:25:20,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 556 transitions, 2652 flow [2022-11-25 18:25:20,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 556 transitions, 2651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-25 18:25:20,532 INFO L231 Difference]: Finished difference. Result has 102 places, 140 transitions, 884 flow [2022-11-25 18:25:20,533 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=686, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=884, PETRI_PLACES=102, PETRI_TRANSITIONS=140} [2022-11-25 18:25:20,533 INFO L288 CegarLoopForPetriNet]: 82 programPoint places, 20 predicate places. [2022-11-25 18:25:20,534 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 140 transitions, 884 flow [2022-11-25 18:25:20,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 278.0) internal successors, (3336), 12 states have internal predecessors, (3336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:20,535 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-25 18:25:20,535 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-25 18:25:20,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:25:20,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-25 18:25:20,749 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-11-25 18:25:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 18:25:20,749 INFO L85 PathProgramCache]: Analyzing trace with hash 785934106, now seen corresponding path program 1 times [2022-11-25 18:25:20,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-25 18:25:20,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308899621] [2022-11-25 18:25:20,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 18:25:20,750 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 [2022-11-25 18:25:20,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat [2022-11-25 18:25:20,752 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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) [2022-11-25 18:25:20,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_389da387-6d69-42fe-83f9-1d534b0686d5/bin/uautomizer-ZsLfNo2U6R/mathsat -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 [2022-11-25 18:25:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 18:25:20,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 18:25:20,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 18:25:20,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:20,965 INFO L321 Elim1Store]: treesize reduction 79, result has 27.5 percent of original size [2022-11-25 18:25:20,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 29 treesize of output 48 [2022-11-25 18:25:21,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:21,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:25:21,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 18:25:21,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:25:21,121 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-25 18:25:21,121 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-25 18:25:21,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 18:25:21,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 18:25:21,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-25 18:25:21,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308899621] [2022-11-25 18:25:21,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308899621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 18:25:21,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 18:25:21,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 18:25:21,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899730058] [2022-11-25 18:25:21,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 18:25:21,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 18:25:21,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-25 18:25:21,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 18:25:21,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 18:25:21,734 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 686 [2022-11-25 18:25:21,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 140 transitions, 884 flow. Second operand has 4 states, 4 states have (on average 305.75) internal successors, (1223), 4 states have internal predecessors, (1223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 18:25:21,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-25 18:25:21,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 686 [2022-11-25 18:25:21,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand