./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b 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_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d --- 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-8393723 [2022-11-18 20:45:15,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:45:15,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:45:15,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:45:15,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:45:15,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:45:15,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:45:15,599 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:45:15,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:45:15,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:45:15,609 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:45:15,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:45:15,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:45:15,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:45:15,617 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:45:15,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:45:15,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:45:15,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:45:15,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:45:15,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:45:15,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:45:15,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:45:15,644 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:45:15,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:45:15,654 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:45:15,654 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:45:15,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:45:15,657 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:45:15,657 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:45:15,660 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:45:15,661 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:45:15,662 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:45:15,664 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:45:15,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:45:15,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:45:15,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:45:15,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:45:15,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:45:15,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:45:15,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:45:15,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:45:15,672 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 20:45:15,721 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:45:15,722 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:45:15,723 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:45:15,723 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:45:15,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:45:15,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:45:15,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:45:15,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:45:15,727 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:45:15,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:45:15,728 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:45:15,728 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:45:15,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:45:15,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:45:15,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:45:15,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:45:15,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:45:15,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:45:15,730 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 20:45:15,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:45:15,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:45:15,731 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:45:15,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:45:15,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:45:15,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:45:15,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:45:15,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:45:15,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:45:15,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:45:15,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:45:15,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:45:15,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:45:15,734 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:45:15,734 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:45:15,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:45:15,735 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f484a00c18d1df7ceedc12992e35584262ebeacdaf88de41be4bc57f4fb5401d [2022-11-18 20:45:16,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:45:16,139 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:45:16,143 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:45:16,144 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:45:16,145 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:45:16,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-18 20:45:16,242 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/data/8033cb4c5/fadc81f32318435e9202131cdae297f5/FLAG3a7111284 [2022-11-18 20:45:16,842 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:45:16,842 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c [2022-11-18 20:45:16,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/data/8033cb4c5/fadc81f32318435e9202131cdae297f5/FLAG3a7111284 [2022-11-18 20:45:17,167 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/data/8033cb4c5/fadc81f32318435e9202131cdae297f5 [2022-11-18 20:45:17,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:45:17,172 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:45:17,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:45:17,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:45:17,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:45:17,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2153fa92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17, skipping insertion in model container [2022-11-18 20:45:17,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:45:17,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:45:17,547 WARN L234 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_d7fe19f5-4051-46ba-99d9-51a6f9d43257/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-18 20:45:17,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:45:17,581 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:45:17,659 WARN L234 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_d7fe19f5-4051-46ba-99d9-51a6f9d43257/sv-benchmarks/c/weaver/popl20-commit-2.wvr.c[5846,5859] [2022-11-18 20:45:17,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:45:17,692 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:45:17,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17 WrapperNode [2022-11-18 20:45:17,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:45:17,694 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:45:17,694 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:45:17,694 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:45:17,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,786 INFO L138 Inliner]: procedures = 26, calls = 93, calls flagged for inlining = 27, calls inlined = 33, statements flattened = 488 [2022-11-18 20:45:17,789 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:45:17,790 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:45:17,791 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:45:17,791 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:45:17,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,838 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,863 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:45:17,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:45:17,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:45:17,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:45:17,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (1/1) ... [2022-11-18 20:45:17,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:45:17,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:17,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:45:17,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:45:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:45:17,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:45:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:45:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:45:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:45:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:45:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:45:17,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:45:17,973 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 20:45:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 20:45:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-11-18 20:45:17,974 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-11-18 20:45:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:45:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:45:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:45:17,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:45:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:45:17,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:45:17,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:45:17,977 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:45:18,187 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:45:18,190 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:45:19,127 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:45:19,597 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:45:19,597 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-18 20:45:19,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:45:19 BoogieIcfgContainer [2022-11-18 20:45:19,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:45:19,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:45:19,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:45:19,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:45:19,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:45:17" (1/3) ... [2022-11-18 20:45:19,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8813eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:45:19, skipping insertion in model container [2022-11-18 20:45:19,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:45:17" (2/3) ... [2022-11-18 20:45:19,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8813eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:45:19, skipping insertion in model container [2022-11-18 20:45:19,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:45:19" (3/3) ... [2022-11-18 20:45:19,613 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-2.wvr.c [2022-11-18 20:45:19,626 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:45:19,636 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:45:19,637 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2022-11-18 20:45:19,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:45:19,817 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-18 20:45:19,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 367 transitions, 766 flow [2022-11-18 20:45:20,036 INFO L130 PetriNetUnfolder]: 25/363 cut-off events. [2022-11-18 20:45:20,037 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-18 20:45:20,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 380 conditions, 363 events. 25/363 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 331 event pairs, 0 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 320. Up to 2 conditions per place. [2022-11-18 20:45:20,049 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 367 transitions, 766 flow [2022-11-18 20:45:20,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 329 places, 340 transitions, 701 flow [2022-11-18 20:45:20,089 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:45:20,098 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@61d87cbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:45:20,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2022-11-18 20:45:20,132 INFO L130 PetriNetUnfolder]: 3/79 cut-off events. [2022-11-18 20:45:20,132 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 20:45:20,133 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:45:20,134 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:20,135 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 20:45:20,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:20,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1263171729, now seen corresponding path program 1 times [2022-11-18 20:45:20,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:20,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765071191] [2022-11-18 20:45:20,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:20,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:20,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:20,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:20,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765071191] [2022-11-18 20:45:20,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765071191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:45:20,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:45:20,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:45:20,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029864079] [2022-11-18 20:45:20,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:45:20,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:45:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:20,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:45:20,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:45:20,741 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-18 20:45:20,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 340 transitions, 701 flow. Second operand has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:20,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:45:20,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-18 20:45:20,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:45:25,171 INFO L130 PetriNetUnfolder]: 6441/9073 cut-off events. [2022-11-18 20:45:25,171 INFO L131 PetriNetUnfolder]: For 1010/1014 co-relation queries the response was YES. [2022-11-18 20:45:25,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18984 conditions, 9073 events. 6441/9073 cut-off events. For 1010/1014 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 48870 event pairs, 4782 based on Foata normal form. 1660/6651 useless extension candidates. Maximal degree in co-relation 9063. Up to 4373 conditions per place. [2022-11-18 20:45:25,299 INFO L137 encePairwiseOnDemand]: 312/367 looper letters, 126 selfloop transitions, 19 changer transitions 8/378 dead transitions. [2022-11-18 20:45:25,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 378 transitions, 1088 flow [2022-11-18 20:45:25,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:45:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 20:45:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1486 transitions. [2022-11-18 20:45:25,325 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8098092643051771 [2022-11-18 20:45:25,326 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1486 transitions. [2022-11-18 20:45:25,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1486 transitions. [2022-11-18 20:45:25,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:45:25,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1486 transitions. [2022-11-18 20:45:25,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 297.2) internal successors, (1486), 5 states have internal predecessors, (1486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:25,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:25,372 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 367.0) internal successors, (2202), 6 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:25,374 INFO L175 Difference]: Start difference. First operand has 329 places, 340 transitions, 701 flow. Second operand 5 states and 1486 transitions. [2022-11-18 20:45:25,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 378 transitions, 1088 flow [2022-11-18 20:45:25,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 378 transitions, 1062 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-11-18 20:45:25,394 INFO L231 Difference]: Finished difference. Result has 317 places, 319 transitions, 757 flow [2022-11-18 20:45:25,397 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=632, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=757, PETRI_PLACES=317, PETRI_TRANSITIONS=319} [2022-11-18 20:45:25,403 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -12 predicate places. [2022-11-18 20:45:25,404 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 319 transitions, 757 flow [2022-11-18 20:45:25,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:25,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:45:25,406 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:25,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:45:25,407 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 20:45:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1733564895, now seen corresponding path program 1 times [2022-11-18 20:45:25,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:25,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468424140] [2022-11-18 20:45:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:25,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:25,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:25,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468424140] [2022-11-18 20:45:25,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468424140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:25,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609824370] [2022-11-18 20:45:25,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:25,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:25,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:25,691 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:25,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:45:25,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:45:25,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:26,043 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:26,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:26,136 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:26,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609824370] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:26,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:45:26,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 20:45:26,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471119506] [2022-11-18 20:45:26,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:26,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:45:26,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:26,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:45:26,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:45:26,149 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-18 20:45:26,154 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 319 transitions, 757 flow. Second operand has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:26,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:45:26,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-18 20:45:26,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:45:34,537 INFO L130 PetriNetUnfolder]: 16101/22486 cut-off events. [2022-11-18 20:45:34,538 INFO L131 PetriNetUnfolder]: For 479/489 co-relation queries the response was YES. [2022-11-18 20:45:34,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46628 conditions, 22486 events. 16101/22486 cut-off events. For 479/489 co-relation queries the response was YES. Maximal size of possible extension queue 555. Compared 128857 event pairs, 11955 based on Foata normal form. 12/12333 useless extension candidates. Maximal degree in co-relation 36692. Up to 4362 conditions per place. [2022-11-18 20:45:34,789 INFO L137 encePairwiseOnDemand]: 336/367 looper letters, 267 selfloop transitions, 84 changer transitions 0/576 dead transitions. [2022-11-18 20:45:34,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 576 transitions, 2111 flow [2022-11-18 20:45:34,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:45:34,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 20:45:34,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4989 transitions. [2022-11-18 20:45:34,808 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7552225249772934 [2022-11-18 20:45:34,809 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4989 transitions. [2022-11-18 20:45:34,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4989 transitions. [2022-11-18 20:45:34,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:45:34,813 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4989 transitions. [2022-11-18 20:45:34,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 277.1666666666667) internal successors, (4989), 18 states have internal predecessors, (4989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:34,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:34,849 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 367.0) internal successors, (6973), 19 states have internal predecessors, (6973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:34,849 INFO L175 Difference]: Start difference. First operand has 317 places, 319 transitions, 757 flow. Second operand 18 states and 4989 transitions. [2022-11-18 20:45:34,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 576 transitions, 2111 flow [2022-11-18 20:45:34,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 576 transitions, 2100 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 20:45:34,870 INFO L231 Difference]: Finished difference. Result has 329 places, 376 transitions, 1248 flow [2022-11-18 20:45:34,871 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1248, PETRI_PLACES=329, PETRI_TRANSITIONS=376} [2022-11-18 20:45:34,872 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 0 predicate places. [2022-11-18 20:45:34,873 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 376 transitions, 1248 flow [2022-11-18 20:45:34,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 259.6666666666667) internal successors, (3116), 12 states have internal predecessors, (3116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:34,878 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:45:34,878 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:34,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:35,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:35,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 20:45:35,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:35,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2094064536, now seen corresponding path program 1 times [2022-11-18 20:45:35,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:35,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350761882] [2022-11-18 20:45:35,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:35,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:35,280 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:35,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:35,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350761882] [2022-11-18 20:45:35,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350761882] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:35,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400543874] [2022-11-18 20:45:35,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:35,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:35,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:35,283 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:35,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:45:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:35,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:45:35,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:35,504 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:35,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:45:35,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400543874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:45:35,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:45:35,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 20:45:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522264203] [2022-11-18 20:45:35,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:45:35,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:45:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:45:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:45:35,508 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-18 20:45:35,510 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 376 transitions, 1248 flow. Second operand has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:35,510 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:45:35,510 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-18 20:45:35,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:45:42,583 INFO L130 PetriNetUnfolder]: 16101/22470 cut-off events. [2022-11-18 20:45:42,583 INFO L131 PetriNetUnfolder]: For 689/699 co-relation queries the response was YES. [2022-11-18 20:45:42,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46703 conditions, 22470 events. 16101/22470 cut-off events. For 689/699 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 129097 event pairs, 11955 based on Foata normal form. 16/12321 useless extension candidates. Maximal degree in co-relation 37304. Up to 17348 conditions per place. [2022-11-18 20:45:42,975 INFO L137 encePairwiseOnDemand]: 344/367 looper letters, 127 selfloop transitions, 59 changer transitions 0/411 dead transitions. [2022-11-18 20:45:42,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 411 transitions, 1630 flow [2022-11-18 20:45:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:45:42,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:45:42,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2022-11-18 20:45:42,987 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7567146749708058 [2022-11-18 20:45:42,989 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2022-11-18 20:45:42,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2022-11-18 20:45:42,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:45:42,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2022-11-18 20:45:42,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:43,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:43,004 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 367.0) internal successors, (2936), 8 states have internal predecessors, (2936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:43,004 INFO L175 Difference]: Start difference. First operand has 329 places, 376 transitions, 1248 flow. Second operand 7 states and 1944 transitions. [2022-11-18 20:45:43,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 411 transitions, 1630 flow [2022-11-18 20:45:43,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 411 transitions, 1472 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-18 20:45:43,020 INFO L231 Difference]: Finished difference. Result has 322 places, 360 transitions, 1100 flow [2022-11-18 20:45:43,021 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=982, PETRI_DIFFERENCE_MINUEND_PLACES=316, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1100, PETRI_PLACES=322, PETRI_TRANSITIONS=360} [2022-11-18 20:45:43,024 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, -7 predicate places. [2022-11-18 20:45:43,024 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 360 transitions, 1100 flow [2022-11-18 20:45:43,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 259.3333333333333) internal successors, (1556), 6 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:43,026 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:45:43,026 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:43,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:43,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 20:45:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1657635695, now seen corresponding path program 2 times [2022-11-18 20:45:43,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:43,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747518982] [2022-11-18 20:45:43,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:43,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:43,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:43,614 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:43,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:43,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747518982] [2022-11-18 20:45:43,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747518982] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:43,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131331402] [2022-11-18 20:45:43,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:45:43,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:43,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:43,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:43,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:45:43,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 20:45:43,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:45:43,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:45:43,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:44,002 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:45:44,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:44,221 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-18 20:45:44,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131331402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:44,222 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:45:44,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 20:45:44,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633487796] [2022-11-18 20:45:44,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:44,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:45:44,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:44,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:45:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:45:44,230 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 367 [2022-11-18 20:45:44,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 360 transitions, 1100 flow. Second operand has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:44,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:45:44,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 367 [2022-11-18 20:45:44,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:45:49,739 INFO L130 PetriNetUnfolder]: 7988/11916 cut-off events. [2022-11-18 20:45:49,739 INFO L131 PetriNetUnfolder]: For 595/602 co-relation queries the response was YES. [2022-11-18 20:45:49,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 11916 events. 7988/11916 cut-off events. For 595/602 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 62830 event pairs, 5306 based on Foata normal form. 8/8466 useless extension candidates. Maximal degree in co-relation 20160. Up to 1593 conditions per place. [2022-11-18 20:45:49,839 INFO L137 encePairwiseOnDemand]: 325/367 looper letters, 333 selfloop transitions, 129 changer transitions 0/662 dead transitions. [2022-11-18 20:45:49,839 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 662 transitions, 2819 flow [2022-11-18 20:45:49,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 20:45:49,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 20:45:49,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 11880 transitions. [2022-11-18 20:45:49,870 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6606239225935606 [2022-11-18 20:45:49,870 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 11880 transitions. [2022-11-18 20:45:49,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 11880 transitions. [2022-11-18 20:45:49,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:45:49,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 11880 transitions. [2022-11-18 20:45:49,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 242.44897959183675) internal successors, (11880), 49 states have internal predecessors, (11880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:49,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:49,960 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 367.0) internal successors, (18350), 50 states have internal predecessors, (18350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:49,960 INFO L175 Difference]: Start difference. First operand has 322 places, 360 transitions, 1100 flow. Second operand 49 states and 11880 transitions. [2022-11-18 20:45:49,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 662 transitions, 2819 flow [2022-11-18 20:45:49,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 662 transitions, 2724 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 20:45:49,976 INFO L231 Difference]: Finished difference. Result has 362 places, 409 transitions, 1559 flow [2022-11-18 20:45:49,976 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1004, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1559, PETRI_PLACES=362, PETRI_TRANSITIONS=409} [2022-11-18 20:45:49,977 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 33 predicate places. [2022-11-18 20:45:49,977 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 409 transitions, 1559 flow [2022-11-18 20:45:49,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 235.61111111111111) internal successors, (4241), 18 states have internal predecessors, (4241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:49,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:45:49,980 INFO L209 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:49,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:50,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:50,187 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 20:45:50,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:50,188 INFO L85 PathProgramCache]: Analyzing trace with hash -730684281, now seen corresponding path program 1 times [2022-11-18 20:45:50,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:50,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228538559] [2022-11-18 20:45:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:50,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:50,773 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:50,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228538559] [2022-11-18 20:45:50,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228538559] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:50,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176034439] [2022-11-18 20:45:50,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:50,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:50,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:50,777 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:50,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:45:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:50,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 20:45:50,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:51,128 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:51,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:45:51,509 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:45:51,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176034439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:45:51,510 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:45:51,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 20:45:51,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797716698] [2022-11-18 20:45:51,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:45:51,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 20:45:51,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 20:45:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 20:45:51,521 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 257 out of 367 [2022-11-18 20:45:51,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 409 transitions, 1559 flow. Second operand has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:45:51,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:45:51,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 257 of 367 [2022-11-18 20:45:51,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:46:01,963 INFO L130 PetriNetUnfolder]: 17116/25419 cut-off events. [2022-11-18 20:46:01,963 INFO L131 PetriNetUnfolder]: For 1956/1971 co-relation queries the response was YES. [2022-11-18 20:46:02,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52818 conditions, 25419 events. 17116/25419 cut-off events. For 1956/1971 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 141638 event pairs, 11370 based on Foata normal form. 24/18093 useless extension candidates. Maximal degree in co-relation 52018. Up to 2625 conditions per place. [2022-11-18 20:46:02,159 INFO L137 encePairwiseOnDemand]: 341/367 looper letters, 686 selfloop transitions, 218 changer transitions 0/1135 dead transitions. [2022-11-18 20:46:02,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 1135 transitions, 5875 flow [2022-11-18 20:46:02,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:46:02,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 20:46:02,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 12236 transitions. [2022-11-18 20:46:02,186 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7577408967054744 [2022-11-18 20:46:02,186 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 12236 transitions. [2022-11-18 20:46:02,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 12236 transitions. [2022-11-18 20:46:02,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:46:02,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 12236 transitions. [2022-11-18 20:46:02,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 278.09090909090907) internal successors, (12236), 44 states have internal predecessors, (12236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:02,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:02,253 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 367.0) internal successors, (16515), 45 states have internal predecessors, (16515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:02,254 INFO L175 Difference]: Start difference. First operand has 362 places, 409 transitions, 1559 flow. Second operand 44 states and 12236 transitions. [2022-11-18 20:46:02,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 1135 transitions, 5875 flow [2022-11-18 20:46:02,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 1135 transitions, 5533 flow, removed 104 selfloop flow, removed 15 redundant places. [2022-11-18 20:46:02,282 INFO L231 Difference]: Finished difference. Result has 399 places, 535 transitions, 2771 flow [2022-11-18 20:46:02,283 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2771, PETRI_PLACES=399, PETRI_TRANSITIONS=535} [2022-11-18 20:46:02,284 INFO L288 CegarLoopForPetriNet]: 329 programPoint places, 70 predicate places. [2022-11-18 20:46:02,284 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 535 transitions, 2771 flow [2022-11-18 20:46:02,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 260.28125) internal successors, (8329), 32 states have internal predecessors, (8329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:02,287 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:46:02,288 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:46:02,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:46:02,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7fe19f5-4051-46ba-99d9-51a6f9d43257/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:46:02,495 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2022-11-18 20:46:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:46:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1010340897, now seen corresponding path program 1 times [2022-11-18 20:46:02,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:46:02,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259045006] [2022-11-18 20:46:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:46:02,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:46:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:46:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:02,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259045006] [2022-11-18 20:46:02,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259045006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:02,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:46:02,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:46:02,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740107231] [2022-11-18 20:46:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:02,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:46:02,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:02,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:46:02,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:46:02,766 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 255 out of 367 [2022-11-18 20:46:02,768 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 535 transitions, 2771 flow. Second operand has 6 states, 6 states have (on average 261.1666666666667) internal successors, (1567), 6 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:02,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:46:02,769 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 255 of 367 [2022-11-18 20:46:02,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand