./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.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_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/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_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/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_04abd4bd-21e2-40eb-89b9-3aceb63bacad/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 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 --- 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 18:37:02,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:37:02,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:37:02,766 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:37:02,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:37:02,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:37:02,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:37:02,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:37:02,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:37:02,773 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:37:02,774 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:37:02,775 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:37:02,776 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:37:02,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:37:02,778 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:37:02,779 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:37:02,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:37:02,781 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:37:02,783 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:37:02,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:37:02,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:37:02,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:37:02,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:37:02,790 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:37:02,794 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:37:02,794 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:37:02,794 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:37:02,795 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:37:02,796 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:37:02,797 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:37:02,797 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:37:02,798 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:37:02,799 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:37:02,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:37:02,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:37:02,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:37:02,802 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:37:02,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:37:02,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:37:02,804 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:37:02,805 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:37:02,809 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-18 18:37:02,837 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:37:02,838 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:37:02,838 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:37:02,842 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:37:02,845 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:37:02,845 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:37:02,846 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:37:02,846 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:37:02,846 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:37:02,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:37:02,847 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:37:02,848 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 18:37:02,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:37:02,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:37:02,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:37:02,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:37:02,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:37:02,849 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:37:02,849 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-18 18:37:02,849 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:37:02,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:37:02,849 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:37:02,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:37:02,850 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:37:02,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:37:02,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:37:02,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:02,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:37:02,853 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:37:02,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:37:02,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:37:02,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:37:02,853 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:37:02,854 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:37:02,854 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:37:02,854 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_04abd4bd-21e2-40eb-89b9-3aceb63bacad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29fee1864b0d56497c32cb33e6aaa24ed5707e21c5b89ec418c6707c5ac52336 [2022-11-18 18:37:03,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:37:03,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:37:03,124 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:37:03,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:37:03,126 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:37:03,128 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-18 18:37:03,203 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/data/8eeba1f6a/d236e1eca328498a9b1563278bf3df97/FLAG32a0cebd3 [2022-11-18 18:37:03,737 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:37:03,738 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c [2022-11-18 18:37:03,749 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/data/8eeba1f6a/d236e1eca328498a9b1563278bf3df97/FLAG32a0cebd3 [2022-11-18 18:37:04,077 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/data/8eeba1f6a/d236e1eca328498a9b1563278bf3df97 [2022-11-18 18:37:04,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:37:04,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:37:04,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:04,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:37:04,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:37:04,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b3e9494 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04, skipping insertion in model container [2022-11-18 18:37:04,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:37:04,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:37:04,333 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_04abd4bd-21e2-40eb-89b9-3aceb63bacad/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-18 18:37:04,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:04,355 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:37:04,385 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_04abd4bd-21e2-40eb-89b9-3aceb63bacad/sv-benchmarks/c/weaver/popl20-prod-cons-eq.wvr.c[4380,4393] [2022-11-18 18:37:04,391 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:37:04,406 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:37:04,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04 WrapperNode [2022-11-18 18:37:04,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:37:04,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:04,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:37:04,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:37:04,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,479 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 421 [2022-11-18 18:37:04,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:37:04,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:37:04,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:37:04,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:37:04,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,516 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,523 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:37:04,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:37:04,525 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:37:04,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:37:04,526 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (1/1) ... [2022-11-18 18:37:04,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:37:04,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:04,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:37:04,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:37:04,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:37:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 18:37:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 18:37:04,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 18:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 18:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 18:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 18:37:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 18:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 18:37:04,615 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 18:37:04,615 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 18:37:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 18:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 18:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 18:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 18:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:37:04,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:37:04,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 18:37:04,618 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 18:37:04,745 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:37:04,747 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:37:05,589 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:37:05,954 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:37:05,955 INFO L300 CfgBuilder]: Removed 9 assume(true) statements. [2022-11-18 18:37:05,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:37:05 BoogieIcfgContainer [2022-11-18 18:37:05,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:37:05,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:37:05,963 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:37:05,967 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:37:05,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:37:04" (1/3) ... [2022-11-18 18:37:05,968 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712be30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:37:05, skipping insertion in model container [2022-11-18 18:37:05,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:37:04" (2/3) ... [2022-11-18 18:37:05,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712be30f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:37:05, skipping insertion in model container [2022-11-18 18:37:05,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:37:05" (3/3) ... [2022-11-18 18:37:05,971 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-prod-cons-eq.wvr.c [2022-11-18 18:37:05,985 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 18:37:05,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:37:05,999 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 24 error locations. [2022-11-18 18:37:05,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 18:37:06,182 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 18:37:06,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 422 places, 449 transitions, 922 flow [2022-11-18 18:37:06,482 INFO L130 PetriNetUnfolder]: 37/446 cut-off events. [2022-11-18 18:37:06,482 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 18:37:06,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 459 conditions, 446 events. 37/446 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 592 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 360. Up to 2 conditions per place. [2022-11-18 18:37:06,492 INFO L82 GeneralOperation]: Start removeDead. Operand has 422 places, 449 transitions, 922 flow [2022-11-18 18:37:06,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 425 transitions, 865 flow [2022-11-18 18:37:06,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:37:06,527 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;@23da6fa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:37:06,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2022-11-18 18:37:06,547 INFO L130 PetriNetUnfolder]: 3/96 cut-off events. [2022-11-18 18:37:06,547 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-18 18:37:06,547 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:06,548 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] [2022-11-18 18:37:06,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:06,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:06,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1072572112, now seen corresponding path program 1 times [2022-11-18 18:37:06,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:06,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560362874] [2022-11-18 18:37:06,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:06,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:06,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:07,074 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 18:37:07,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:07,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560362874] [2022-11-18 18:37:07,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560362874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:07,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:07,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:37:07,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890573024] [2022-11-18 18:37:07,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:07,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:07,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:07,135 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-18 18:37:07,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 425 transitions, 865 flow. Second operand has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 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 18:37:07,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:07,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-18 18:37:07,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:07,832 INFO L130 PetriNetUnfolder]: 173/1029 cut-off events. [2022-11-18 18:37:07,833 INFO L131 PetriNetUnfolder]: For 88/96 co-relation queries the response was YES. [2022-11-18 18:37:07,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 1029 events. 173/1029 cut-off events. For 88/96 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 4466 event pairs, 100 based on Foata normal form. 154/911 useless extension candidates. Maximal degree in co-relation 862. Up to 180 conditions per place. [2022-11-18 18:37:07,851 INFO L137 encePairwiseOnDemand]: 390/449 looper letters, 90 selfloop transitions, 19 changer transitions 12/441 dead transitions. [2022-11-18 18:37:07,851 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 441 transitions, 1130 flow [2022-11-18 18:37:07,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:37:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:37:07,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1938 transitions. [2022-11-18 18:37:07,873 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8632516703786192 [2022-11-18 18:37:07,874 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1938 transitions. [2022-11-18 18:37:07,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1938 transitions. [2022-11-18 18:37:07,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:07,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1938 transitions. [2022-11-18 18:37:07,888 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 387.6) internal successors, (1938), 5 states have internal predecessors, (1938), 0 states have call successors, (0), 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 18:37:07,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 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 18:37:07,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 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 18:37:07,904 INFO L175 Difference]: Start difference. First operand has 399 places, 425 transitions, 865 flow. Second operand 5 states and 1938 transitions. [2022-11-18 18:37:07,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 441 transitions, 1130 flow [2022-11-18 18:37:07,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 441 transitions, 1112 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:37:07,919 INFO L231 Difference]: Finished difference. Result has 395 places, 396 transitions, 909 flow [2022-11-18 18:37:07,922 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=909, PETRI_PLACES=395, PETRI_TRANSITIONS=396} [2022-11-18 18:37:07,926 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, -4 predicate places. [2022-11-18 18:37:07,926 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 396 transitions, 909 flow [2022-11-18 18:37:07,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 354.5) internal successors, (1418), 4 states have internal predecessors, (1418), 0 states have call successors, (0), 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 18:37:07,927 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:07,928 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:07,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:37:07,929 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:07,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:07,929 INFO L85 PathProgramCache]: Analyzing trace with hash -1901730206, now seen corresponding path program 1 times [2022-11-18 18:37:07,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:07,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482143305] [2022-11-18 18:37:07,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:07,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:07,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:08,235 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 18:37:08,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:08,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482143305] [2022-11-18 18:37:08,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482143305] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:08,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995208635] [2022-11-18 18:37:08,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:08,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:08,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:08,251 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:08,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:37:08,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:08,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:37:08,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:08,568 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 18:37:08,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:08,642 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 18:37:08,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995208635] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:08,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:37:08,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-18 18:37:08,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599557061] [2022-11-18 18:37:08,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:08,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:37:08,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:08,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:37:08,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:37:08,652 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-18 18:37:08,657 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 396 transitions, 909 flow. Second operand has 12 states, 12 states have (on average 355.6666666666667) internal successors, (4268), 12 states have internal predecessors, (4268), 0 states have call successors, (0), 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 18:37:08,657 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:08,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-18 18:37:08,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:10,070 INFO L130 PetriNetUnfolder]: 431/2332 cut-off events. [2022-11-18 18:37:10,071 INFO L131 PetriNetUnfolder]: For 89/109 co-relation queries the response was YES. [2022-11-18 18:37:10,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3514 conditions, 2332 events. 431/2332 cut-off events. For 89/109 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14291 event pairs, 250 based on Foata normal form. 12/1724 useless extension candidates. Maximal degree in co-relation 2268. Up to 169 conditions per place. [2022-11-18 18:37:10,102 INFO L137 encePairwiseOnDemand]: 418/449 looper letters, 177 selfloop transitions, 84 changer transitions 0/581 dead transitions. [2022-11-18 18:37:10,102 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 581 transitions, 1931 flow [2022-11-18 18:37:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:37:10,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-18 18:37:10,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6627 transitions. [2022-11-18 18:37:10,116 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.819970304380104 [2022-11-18 18:37:10,116 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6627 transitions. [2022-11-18 18:37:10,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6627 transitions. [2022-11-18 18:37:10,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:10,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6627 transitions. [2022-11-18 18:37:10,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 368.1666666666667) internal successors, (6627), 18 states have internal predecessors, (6627), 0 states have call successors, (0), 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 18:37:10,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 449.0) internal successors, (8531), 19 states have internal predecessors, (8531), 0 states have call successors, (0), 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 18:37:10,226 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 449.0) internal successors, (8531), 19 states have internal predecessors, (8531), 0 states have call successors, (0), 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 18:37:10,226 INFO L175 Difference]: Start difference. First operand has 395 places, 396 transitions, 909 flow. Second operand 18 states and 6627 transitions. [2022-11-18 18:37:10,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 581 transitions, 1931 flow [2022-11-18 18:37:10,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 581 transitions, 1920 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:37:10,243 INFO L231 Difference]: Finished difference. Result has 403 places, 453 transitions, 1400 flow [2022-11-18 18:37:10,244 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1400, PETRI_PLACES=403, PETRI_TRANSITIONS=453} [2022-11-18 18:37:10,245 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 4 predicate places. [2022-11-18 18:37:10,245 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 453 transitions, 1400 flow [2022-11-18 18:37:10,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 355.6666666666667) internal successors, (4268), 12 states have internal predecessors, (4268), 0 states have call successors, (0), 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 18:37:10,249 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:10,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:10,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-18 18:37:10,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:10,456 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:10,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:10,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1175906909, now seen corresponding path program 1 times [2022-11-18 18:37:10,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:10,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99203975] [2022-11-18 18:37:10,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:10,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:10,672 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 18:37:10,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:10,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99203975] [2022-11-18 18:37:10,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99203975] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:10,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65364932] [2022-11-18 18:37:10,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:10,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:10,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:10,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:10,679 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:37:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:10,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 18:37:10,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:10,855 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 18:37:10,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:10,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65364932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:10,856 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:37:10,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-18 18:37:10,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379035845] [2022-11-18 18:37:10,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:10,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 18:37:10,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:10,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 18:37:10,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:37:10,861 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-18 18:37:10,863 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 453 transitions, 1400 flow. Second operand has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 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 18:37:10,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:10,864 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-18 18:37:10,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:11,865 INFO L130 PetriNetUnfolder]: 431/2316 cut-off events. [2022-11-18 18:37:11,865 INFO L131 PetriNetUnfolder]: For 299/319 co-relation queries the response was YES. [2022-11-18 18:37:11,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3589 conditions, 2316 events. 431/2316 cut-off events. For 299/319 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 14193 event pairs, 250 based on Foata normal form. 16/1712 useless extension candidates. Maximal degree in co-relation 2816. Up to 576 conditions per place. [2022-11-18 18:37:11,894 INFO L137 encePairwiseOnDemand]: 426/449 looper letters, 91 selfloop transitions, 59 changer transitions 0/470 dead transitions. [2022-11-18 18:37:11,894 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 470 transitions, 1672 flow [2022-11-18 18:37:11,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 18:37:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 18:37:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2580 transitions. [2022-11-18 18:37:11,900 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8208717785555202 [2022-11-18 18:37:11,900 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2580 transitions. [2022-11-18 18:37:11,901 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2580 transitions. [2022-11-18 18:37:11,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:11,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2580 transitions. [2022-11-18 18:37:11,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 368.57142857142856) internal successors, (2580), 7 states have internal predecessors, (2580), 0 states have call successors, (0), 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 18:37:11,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 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 18:37:11,916 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 449.0) internal successors, (3592), 8 states have internal predecessors, (3592), 0 states have call successors, (0), 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 18:37:11,917 INFO L175 Difference]: Start difference. First operand has 403 places, 453 transitions, 1400 flow. Second operand 7 states and 2580 transitions. [2022-11-18 18:37:11,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 470 transitions, 1672 flow [2022-11-18 18:37:11,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 470 transitions, 1514 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-11-18 18:37:11,931 INFO L231 Difference]: Finished difference. Result has 396 places, 437 transitions, 1252 flow [2022-11-18 18:37:11,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1134, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1252, PETRI_PLACES=396, PETRI_TRANSITIONS=437} [2022-11-18 18:37:11,933 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, -3 predicate places. [2022-11-18 18:37:11,933 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 437 transitions, 1252 flow [2022-11-18 18:37:11,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 355.3333333333333) internal successors, (2132), 6 states have internal predecessors, (2132), 0 states have call successors, (0), 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 18:37:11,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:11,934 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:11,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:37:12,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-18 18:37:12,141 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:12,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1452915120, now seen corresponding path program 2 times [2022-11-18 18:37:12,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:12,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088632153] [2022-11-18 18:37:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:12,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:12,454 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 18:37:12,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:12,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088632153] [2022-11-18 18:37:12,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088632153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:12,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953991009] [2022-11-18 18:37:12,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 18:37:12,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:12,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:12,457 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:12,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:37:12,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-18 18:37:12,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 18:37:12,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 18:37:12,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:12,829 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 18:37:12,829 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:13,078 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 18:37:13,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953991009] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:13,078 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:37:13,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-18 18:37:13,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010265547] [2022-11-18 18:37:13,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:13,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 18:37:13,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:13,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 18:37:13,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-18 18:37:13,088 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 327 out of 449 [2022-11-18 18:37:13,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 437 transitions, 1252 flow. Second operand has 18 states, 18 states have (on average 330.6111111111111) internal successors, (5951), 18 states have internal predecessors, (5951), 0 states have call successors, (0), 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 18:37:13,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:13,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 327 of 449 [2022-11-18 18:37:13,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:15,898 INFO L130 PetriNetUnfolder]: 1037/4099 cut-off events. [2022-11-18 18:37:15,899 INFO L131 PetriNetUnfolder]: For 406/434 co-relation queries the response was YES. [2022-11-18 18:37:15,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6474 conditions, 4099 events. 1037/4099 cut-off events. For 406/434 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 28849 event pairs, 623 based on Foata normal form. 8/2784 useless extension candidates. Maximal degree in co-relation 4728. Up to 271 conditions per place. [2022-11-18 18:37:15,947 INFO L137 encePairwiseOnDemand]: 413/449 looper letters, 256 selfloop transitions, 129 changer transitions 0/679 dead transitions. [2022-11-18 18:37:15,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 679 transitions, 2685 flow [2022-11-18 18:37:15,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-18 18:37:15,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-11-18 18:37:15,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 16416 transitions. [2022-11-18 18:37:15,979 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7461479023680742 [2022-11-18 18:37:15,979 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 16416 transitions. [2022-11-18 18:37:15,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 16416 transitions. [2022-11-18 18:37:15,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:15,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 16416 transitions. [2022-11-18 18:37:16,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 335.0204081632653) internal successors, (16416), 49 states have internal predecessors, (16416), 0 states have call successors, (0), 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 18:37:16,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 449.0) internal successors, (22450), 50 states have internal predecessors, (22450), 0 states have call successors, (0), 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 18:37:16,083 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 449.0) internal successors, (22450), 50 states have internal predecessors, (22450), 0 states have call successors, (0), 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 18:37:16,084 INFO L175 Difference]: Start difference. First operand has 396 places, 437 transitions, 1252 flow. Second operand 49 states and 16416 transitions. [2022-11-18 18:37:16,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 679 transitions, 2685 flow [2022-11-18 18:37:16,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 679 transitions, 2590 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-18 18:37:16,103 INFO L231 Difference]: Finished difference. Result has 442 places, 492 transitions, 1723 flow [2022-11-18 18:37:16,104 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=348, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=1723, PETRI_PLACES=442, PETRI_TRANSITIONS=492} [2022-11-18 18:37:16,105 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 43 predicate places. [2022-11-18 18:37:16,105 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 492 transitions, 1723 flow [2022-11-18 18:37:16,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 330.6111111111111) internal successors, (5951), 18 states have internal predecessors, (5951), 0 states have call successors, (0), 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 18:37:16,107 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:16,108 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] [2022-11-18 18:37:16,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:16,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:16,313 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:16,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:16,316 INFO L85 PathProgramCache]: Analyzing trace with hash -435163169, now seen corresponding path program 1 times [2022-11-18 18:37:16,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:16,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256574239] [2022-11-18 18:37:16,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:16,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:16,435 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 18:37:16,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:16,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256574239] [2022-11-18 18:37:16,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256574239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:16,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:16,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 18:37:16,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318318210] [2022-11-18 18:37:16,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:16,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:37:16,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:16,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:37:16,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 18:37:16,439 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 449 [2022-11-18 18:37:16,441 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 492 transitions, 1723 flow. Second operand has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 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 18:37:16,441 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:16,441 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 449 [2022-11-18 18:37:16,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:18,289 INFO L130 PetriNetUnfolder]: 1184/5726 cut-off events. [2022-11-18 18:37:18,289 INFO L131 PetriNetUnfolder]: For 569/625 co-relation queries the response was YES. [2022-11-18 18:37:18,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8783 conditions, 5726 events. 1184/5726 cut-off events. For 569/625 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 47656 event pairs, 700 based on Foata normal form. 0/4060 useless extension candidates. Maximal degree in co-relation 8484. Up to 981 conditions per place. [2022-11-18 18:37:18,362 INFO L137 encePairwiseOnDemand]: 443/449 looper letters, 42 selfloop transitions, 4 changer transitions 0/513 dead transitions. [2022-11-18 18:37:18,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 513 transitions, 1863 flow [2022-11-18 18:37:18,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:37:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 18:37:18,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1993 transitions. [2022-11-18 18:37:18,368 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877505567928731 [2022-11-18 18:37:18,368 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1993 transitions. [2022-11-18 18:37:18,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1993 transitions. [2022-11-18 18:37:18,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:18,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1993 transitions. [2022-11-18 18:37:18,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 398.6) internal successors, (1993), 5 states have internal predecessors, (1993), 0 states have call successors, (0), 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 18:37:18,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 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 18:37:18,380 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 449.0) internal successors, (2694), 6 states have internal predecessors, (2694), 0 states have call successors, (0), 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 18:37:18,380 INFO L175 Difference]: Start difference. First operand has 442 places, 492 transitions, 1723 flow. Second operand 5 states and 1993 transitions. [2022-11-18 18:37:18,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 513 transitions, 1863 flow [2022-11-18 18:37:18,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 513 transitions, 1700 flow, removed 23 selfloop flow, removed 15 redundant places. [2022-11-18 18:37:18,397 INFO L231 Difference]: Finished difference. Result has 434 places, 495 transitions, 1590 flow [2022-11-18 18:37:18,398 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=488, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1590, PETRI_PLACES=434, PETRI_TRANSITIONS=495} [2022-11-18 18:37:18,398 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 35 predicate places. [2022-11-18 18:37:18,399 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 495 transitions, 1590 flow [2022-11-18 18:37:18,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 390.5) internal successors, (1562), 4 states have internal predecessors, (1562), 0 states have call successors, (0), 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 18:37:18,399 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:18,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:37:18,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:37:18,400 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:18,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:18,401 INFO L85 PathProgramCache]: Analyzing trace with hash 185675178, now seen corresponding path program 1 times [2022-11-18 18:37:18,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:18,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788464140] [2022-11-18 18:37:18,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:18,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:18,959 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 18:37:18,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:18,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788464140] [2022-11-18 18:37:18,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788464140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:18,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031741676] [2022-11-18 18:37:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:18,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:18,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:18,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:18,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 18:37:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:19,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:37:19,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:19,306 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 18:37:19,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:19,643 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 18:37:19,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031741676] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:19,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:37:19,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-18 18:37:19,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503565114] [2022-11-18 18:37:19,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:19,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-18 18:37:19,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-18 18:37:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-18 18:37:19,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 353 out of 449 [2022-11-18 18:37:19,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 495 transitions, 1590 flow. Second operand has 32 states, 32 states have (on average 356.28125) internal successors, (11401), 32 states have internal predecessors, (11401), 0 states have call successors, (0), 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 18:37:19,664 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:19,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 353 of 449 [2022-11-18 18:37:19,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:24,888 INFO L130 PetriNetUnfolder]: 2536/12117 cut-off events. [2022-11-18 18:37:24,888 INFO L131 PetriNetUnfolder]: For 1537/1657 co-relation queries the response was YES. [2022-11-18 18:37:24,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19017 conditions, 12117 events. 2536/12117 cut-off events. For 1537/1657 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 112034 event pairs, 1500 based on Foata normal form. 32/8609 useless extension candidates. Maximal degree in co-relation 18346. Up to 630 conditions per place. [2022-11-18 18:37:25,036 INFO L137 encePairwiseOnDemand]: 423/449 looper letters, 506 selfloop transitions, 218 changer transitions 0/1053 dead transitions. [2022-11-18 18:37:25,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 1053 transitions, 5003 flow [2022-11-18 18:37:25,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 18:37:25,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-11-18 18:37:25,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 16280 transitions. [2022-11-18 18:37:25,067 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8240534521158129 [2022-11-18 18:37:25,067 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 16280 transitions. [2022-11-18 18:37:25,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 16280 transitions. [2022-11-18 18:37:25,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:25,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 16280 transitions. [2022-11-18 18:37:25,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 370.0) internal successors, (16280), 44 states have internal predecessors, (16280), 0 states have call successors, (0), 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 18:37:25,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 449.0) internal successors, (20205), 45 states have internal predecessors, (20205), 0 states have call successors, (0), 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 18:37:25,144 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 449.0) internal successors, (20205), 45 states have internal predecessors, (20205), 0 states have call successors, (0), 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 18:37:25,144 INFO L175 Difference]: Start difference. First operand has 434 places, 495 transitions, 1590 flow. Second operand 44 states and 16280 transitions. [2022-11-18 18:37:25,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 1053 transitions, 5003 flow [2022-11-18 18:37:25,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 1053 transitions, 5001 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 18:37:25,172 INFO L231 Difference]: Finished difference. Result has 485 places, 621 transitions, 2963 flow [2022-11-18 18:37:25,173 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=1588, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=2963, PETRI_PLACES=485, PETRI_TRANSITIONS=621} [2022-11-18 18:37:25,176 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 86 predicate places. [2022-11-18 18:37:25,176 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 621 transitions, 2963 flow [2022-11-18 18:37:25,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 356.28125) internal successors, (11401), 32 states have internal predecessors, (11401), 0 states have call successors, (0), 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 18:37:25,180 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:25,180 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:25,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:25,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:25,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:25,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:25,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2097622978, now seen corresponding path program 1 times [2022-11-18 18:37:25,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:25,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049012705] [2022-11-18 18:37:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:25,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:25,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:25,572 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:25,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049012705] [2022-11-18 18:37:25,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049012705] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:25,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890097938] [2022-11-18 18:37:25,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:25,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:25,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:25,575 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:25,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 18:37:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:25,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 18:37:25,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:25,945 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 18:37:25,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:37:25,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890097938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:25,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:37:25,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 13 [2022-11-18 18:37:25,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456402186] [2022-11-18 18:37:25,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:25,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:37:25,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:37:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:37:25,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 449 [2022-11-18 18:37:25,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 621 transitions, 2963 flow. Second operand has 9 states, 9 states have (on average 342.1111111111111) internal successors, (3079), 9 states have internal predecessors, (3079), 0 states have call successors, (0), 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 18:37:25,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:25,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 449 [2022-11-18 18:37:25,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:34,494 INFO L130 PetriNetUnfolder]: 7651/25681 cut-off events. [2022-11-18 18:37:34,494 INFO L131 PetriNetUnfolder]: For 3932/4112 co-relation queries the response was YES. [2022-11-18 18:37:34,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42466 conditions, 25681 events. 7651/25681 cut-off events. For 3932/4112 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 258967 event pairs, 4815 based on Foata normal form. 0/16471 useless extension candidates. Maximal degree in co-relation 41730. Up to 8198 conditions per place. [2022-11-18 18:37:34,821 INFO L137 encePairwiseOnDemand]: 436/449 looper letters, 353 selfloop transitions, 33 changer transitions 0/750 dead transitions. [2022-11-18 18:37:34,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 750 transitions, 4481 flow [2022-11-18 18:37:34,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:37:34,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-18 18:37:34,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 4184 transitions. [2022-11-18 18:37:34,828 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7765404602821084 [2022-11-18 18:37:34,828 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 4184 transitions. [2022-11-18 18:37:34,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 4184 transitions. [2022-11-18 18:37:34,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:34,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 4184 transitions. [2022-11-18 18:37:34,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 348.6666666666667) internal successors, (4184), 12 states have internal predecessors, (4184), 0 states have call successors, (0), 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 18:37:34,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 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 18:37:34,848 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 449.0) internal successors, (5837), 13 states have internal predecessors, (5837), 0 states have call successors, (0), 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 18:37:34,848 INFO L175 Difference]: Start difference. First operand has 485 places, 621 transitions, 2963 flow. Second operand 12 states and 4184 transitions. [2022-11-18 18:37:34,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 750 transitions, 4481 flow [2022-11-18 18:37:34,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 750 transitions, 4297 flow, removed 1 selfloop flow, removed 15 redundant places. [2022-11-18 18:37:34,889 INFO L231 Difference]: Finished difference. Result has 485 places, 625 transitions, 2919 flow [2022-11-18 18:37:34,891 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=2826, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=621, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2919, PETRI_PLACES=485, PETRI_TRANSITIONS=625} [2022-11-18 18:37:34,891 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 86 predicate places. [2022-11-18 18:37:34,892 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 625 transitions, 2919 flow [2022-11-18 18:37:34,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 342.1111111111111) internal successors, (3079), 9 states have internal predecessors, (3079), 0 states have call successors, (0), 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 18:37:34,893 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:34,894 INFO L209 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:37:34,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-18 18:37:35,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-18 18:37:35,101 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:35,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:35,101 INFO L85 PathProgramCache]: Analyzing trace with hash -83199185, now seen corresponding path program 1 times [2022-11-18 18:37:35,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:35,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870465438] [2022-11-18 18:37:35,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:35,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:37:35,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:35,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870465438] [2022-11-18 18:37:35,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870465438] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:37:35,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685607223] [2022-11-18 18:37:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:35,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:35,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:37:35,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:37:35,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 18:37:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:35,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 18:37:35,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:37:35,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:35,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:37:36,311 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:37:36,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685607223] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:37:36,312 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:37:36,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 25 [2022-11-18 18:37:36,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446335633] [2022-11-18 18:37:36,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:37:36,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 18:37:36,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:36,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 18:37:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=523, Unknown=0, NotChecked=0, Total=600 [2022-11-18 18:37:36,328 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 449 [2022-11-18 18:37:36,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 625 transitions, 2919 flow. Second operand has 25 states, 25 states have (on average 317.56) internal successors, (7939), 25 states have internal predecessors, (7939), 0 states have call successors, (0), 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 18:37:36,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:36,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 449 [2022-11-18 18:37:36,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 18:37:54,509 INFO L130 PetriNetUnfolder]: 15256/50124 cut-off events. [2022-11-18 18:37:54,509 INFO L131 PetriNetUnfolder]: For 5908/6268 co-relation queries the response was YES. [2022-11-18 18:37:54,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83371 conditions, 50124 events. 15256/50124 cut-off events. For 5908/6268 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 571876 event pairs, 9630 based on Foata normal form. 30/31794 useless extension candidates. Maximal degree in co-relation 82585. Up to 7900 conditions per place. [2022-11-18 18:37:55,165 INFO L137 encePairwiseOnDemand]: 421/449 looper letters, 676 selfloop transitions, 151 changer transitions 0/1107 dead transitions. [2022-11-18 18:37:55,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 1107 transitions, 7607 flow [2022-11-18 18:37:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-18 18:37:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-11-18 18:37:55,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 11242 transitions. [2022-11-18 18:37:55,182 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7153674832962138 [2022-11-18 18:37:55,182 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 11242 transitions. [2022-11-18 18:37:55,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 11242 transitions. [2022-11-18 18:37:55,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 18:37:55,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 11242 transitions. [2022-11-18 18:37:55,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 321.2) internal successors, (11242), 35 states have internal predecessors, (11242), 0 states have call successors, (0), 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 18:37:55,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 449.0) internal successors, (16164), 36 states have internal predecessors, (16164), 0 states have call successors, (0), 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 18:37:55,235 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 449.0) internal successors, (16164), 36 states have internal predecessors, (16164), 0 states have call successors, (0), 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 18:37:55,235 INFO L175 Difference]: Start difference. First operand has 485 places, 625 transitions, 2919 flow. Second operand 35 states and 11242 transitions. [2022-11-18 18:37:55,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 1107 transitions, 7607 flow [2022-11-18 18:37:55,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1107 transitions, 7576 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-18 18:37:55,300 INFO L231 Difference]: Finished difference. Result has 526 places, 721 transitions, 4000 flow [2022-11-18 18:37:55,301 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=449, PETRI_DIFFERENCE_MINUEND_FLOW=2888, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=625, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=514, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4000, PETRI_PLACES=526, PETRI_TRANSITIONS=721} [2022-11-18 18:37:55,302 INFO L288 CegarLoopForPetriNet]: 399 programPoint places, 127 predicate places. [2022-11-18 18:37:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 526 places, 721 transitions, 4000 flow [2022-11-18 18:37:55,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 317.56) internal successors, (7939), 25 states have internal predecessors, (7939), 0 states have call successors, (0), 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 18:37:55,305 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 18:37:55,305 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, 1, 1, 1, 1] [2022-11-18 18:37:55,318 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 18:37:55,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_04abd4bd-21e2-40eb-89b9-3aceb63bacad/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:37:55,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2022-11-18 18:37:55,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:37:55,521 INFO L85 PathProgramCache]: Analyzing trace with hash -2054944747, now seen corresponding path program 1 times [2022-11-18 18:37:55,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:37:55,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303473166] [2022-11-18 18:37:55,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:37:55,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:37:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:37:55,766 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 18:37:55,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:37:55,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303473166] [2022-11-18 18:37:55,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303473166] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:37:55,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:37:55,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 18:37:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484042591] [2022-11-18 18:37:55,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:37:55,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:37:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:37:55,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:37:55,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 18:37:55,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 392 out of 449 [2022-11-18 18:37:55,774 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 526 places, 721 transitions, 4000 flow. Second operand has 5 states, 5 states have (on average 393.6) internal successors, (1968), 5 states have internal predecessors, (1968), 0 states have call successors, (0), 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 18:37:55,774 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 18:37:55,774 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 392 of 449 [2022-11-18 18:37:55,774 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand