./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8 --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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- 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-e04fb08 [2022-11-16 11:48:13,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:48:13,743 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:48:13,774 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:48:13,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:48:13,780 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:48:13,783 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:48:13,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:48:13,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:48:13,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:48:13,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:48:13,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:48:13,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:48:13,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:48:13,793 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:48:13,794 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:48:13,795 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:48:13,796 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:48:13,797 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:48:13,813 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:48:13,814 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:48:13,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:48:13,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:48:13,821 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:48:13,825 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:48:13,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:48:13,832 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:48:13,833 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:48:13,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:48:13,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:48:13,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:48:13,835 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:48:13,836 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:48:13,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:48:13,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:48:13,838 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:48:13,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:48:13,839 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:48:13,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:48:13,840 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:48:13,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:48:13,845 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 11:48:13,886 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:48:13,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:48:13,887 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:48:13,887 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:48:13,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:48:13,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:48:13,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:48:13,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:48:13,888 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:48:13,889 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:48:13,889 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:48:13,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 11:48:13,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:48:13,892 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:48:13,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:48:13,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:48:13,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:48:13,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:48:13,893 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 11:48:13,894 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:48:13,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:48:13,894 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:48:13,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:48:13,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:48:13,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:48:13,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:48:13,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:48:13,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:48:13,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:48:13,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:48:13,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:48:13,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:48:13,899 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:48:13,899 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:48:13,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:48:13,899 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_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-16 11:48:14,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:48:14,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:48:14,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:48:14,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:48:14,298 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:48:14,300 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-16 11:48:14,391 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/data/2b04e2751/6707ed2d2a6643b88daf72d9d06069fb/FLAG98f1ec6e0 [2022-11-16 11:48:14,942 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:48:14,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-16 11:48:14,953 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/data/2b04e2751/6707ed2d2a6643b88daf72d9d06069fb/FLAG98f1ec6e0 [2022-11-16 11:48:15,267 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/data/2b04e2751/6707ed2d2a6643b88daf72d9d06069fb [2022-11-16 11:48:15,270 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:48:15,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:48:15,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:48:15,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:48:15,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:48:15,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,279 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c122970 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15, skipping insertion in model container [2022-11-16 11:48:15,280 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:48:15,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:48:15,531 WARN L229 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_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-16 11:48:15,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:48:15,545 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:48:15,573 WARN L229 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_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-16 11:48:15,577 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:48:15,591 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:48:15,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15 WrapperNode [2022-11-16 11:48:15,592 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:48:15,593 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:48:15,593 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:48:15,593 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:48:15,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,650 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124 [2022-11-16 11:48:15,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:48:15,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:48:15,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:48:15,652 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:48:15,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,664 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,664 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,679 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,680 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,683 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:48:15,684 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:48:15,684 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:48:15,684 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:48:15,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (1/1) ... [2022-11-16 11:48:15,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:48:15,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:15,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:48:15,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:48:15,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:48:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:48:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:48:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:48:15,779 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:48:15,779 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:48:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:48:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:48:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:48:15,780 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:48:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:48:15,780 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-16 11:48:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-16 11:48:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 11:48:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:48:15,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:48:15,781 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:48:15,783 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:48:15,931 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:48:15,933 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:48:16,310 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:48:16,400 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:48:16,401 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 11:48:16,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:48:16 BoogieIcfgContainer [2022-11-16 11:48:16,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:48:16,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:48:16,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:48:16,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:48:16,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:48:15" (1/3) ... [2022-11-16 11:48:16,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21879474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:48:16, skipping insertion in model container [2022-11-16 11:48:16,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:48:15" (2/3) ... [2022-11-16 11:48:16,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21879474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:48:16, skipping insertion in model container [2022-11-16 11:48:16,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:48:16" (3/3) ... [2022-11-16 11:48:16,424 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-16 11:48:16,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:48:16,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:48:16,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-16 11:48:16,446 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:48:16,595 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:48:16,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 187 transitions, 398 flow [2022-11-16 11:48:16,807 INFO L130 PetriNetUnfolder]: 12/184 cut-off events. [2022-11-16 11:48:16,807 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:48:16,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197 conditions, 184 events. 12/184 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-11-16 11:48:16,818 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 187 transitions, 398 flow [2022-11-16 11:48:16,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 160 transitions, 332 flow [2022-11-16 11:48:16,843 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:48:16,851 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;@1f035ae8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:48:16,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2022-11-16 11:48:16,891 INFO L130 PetriNetUnfolder]: 4/81 cut-off events. [2022-11-16 11:48:16,894 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 11:48:16,894 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:16,895 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:16,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:16,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:16,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1827832899, now seen corresponding path program 1 times [2022-11-16 11:48:16,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:16,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782952192] [2022-11-16 11:48:16,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:16,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:17,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:17,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782952192] [2022-11-16 11:48:17,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782952192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:17,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:17,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:48:17,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997670665] [2022-11-16 11:48:17,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:17,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:48:17,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:17,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:48:17,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:48:17,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-16 11:48:17,584 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 160 transitions, 332 flow. Second operand has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2022-11-16 11:48:17,584 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:17,584 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-16 11:48:17,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:17,917 INFO L130 PetriNetUnfolder]: 63/517 cut-off events. [2022-11-16 11:48:17,917 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2022-11-16 11:48:17,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 517 events. 63/517 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2404 event pairs, 40 based on Foata normal form. 29/458 useless extension candidates. Maximal degree in co-relation 391. Up to 57 conditions per place. [2022-11-16 11:48:17,929 INFO L137 encePairwiseOnDemand]: 174/187 looper letters, 32 selfloop transitions, 4 changer transitions 4/169 dead transitions. [2022-11-16 11:48:17,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 169 transitions, 434 flow [2022-11-16 11:48:17,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:48:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:48:17,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 829 transitions. [2022-11-16 11:48:17,955 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8866310160427807 [2022-11-16 11:48:17,956 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 829 transitions. [2022-11-16 11:48:17,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 829 transitions. [2022-11-16 11:48:17,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:17,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 829 transitions. [2022-11-16 11:48:17,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 165.8) internal successors, (829), 5 states have internal predecessors, (829), 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) [2022-11-16 11:48:17,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-16 11:48:17,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-16 11:48:17,987 INFO L175 Difference]: Start difference. First operand has 159 places, 160 transitions, 332 flow. Second operand 5 states and 829 transitions. [2022-11-16 11:48:17,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 169 transitions, 434 flow [2022-11-16 11:48:17,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 169 transitions, 422 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:48:17,999 INFO L231 Difference]: Finished difference. Result has 162 places, 152 transitions, 334 flow [2022-11-16 11:48:18,001 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=334, PETRI_PLACES=162, PETRI_TRANSITIONS=152} [2022-11-16 11:48:18,005 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-11-16 11:48:18,006 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 152 transitions, 334 flow [2022-11-16 11:48:18,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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) [2022-11-16 11:48:18,007 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:18,008 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:18,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:48:18,009 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1292636638, now seen corresponding path program 1 times [2022-11-16 11:48:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550768084] [2022-11-16 11:48:18,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:18,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:18,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:18,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:18,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550768084] [2022-11-16 11:48:18,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550768084] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:18,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809029738] [2022-11-16 11:48:18,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:18,343 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:18,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:18,347 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:18,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 11:48:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:18,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:18,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:18,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:18,693 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809029738] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:18,693 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:18,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 11:48:18,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340385666] [2022-11-16 11:48:18,695 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:18,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:48:18,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:18,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:48:18,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:48:18,703 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-16 11:48:18,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 152 transitions, 334 flow. Second operand has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 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) [2022-11-16 11:48:18,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:18,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-16 11:48:18,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:19,272 INFO L130 PetriNetUnfolder]: 156/1183 cut-off events. [2022-11-16 11:48:19,272 INFO L131 PetriNetUnfolder]: For 26/26 co-relation queries the response was YES. [2022-11-16 11:48:19,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 1183 events. 156/1183 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7490 event pairs, 100 based on Foata normal form. 3/985 useless extension candidates. Maximal degree in co-relation 1224. Up to 70 conditions per place. [2022-11-16 11:48:19,281 INFO L137 encePairwiseOnDemand]: 180/187 looper letters, 68 selfloop transitions, 18 changer transitions 0/215 dead transitions. [2022-11-16 11:48:19,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 215 transitions, 678 flow [2022-11-16 11:48:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 11:48:19,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 11:48:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2897 transitions. [2022-11-16 11:48:19,287 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8606654783125371 [2022-11-16 11:48:19,288 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2897 transitions. [2022-11-16 11:48:19,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2897 transitions. [2022-11-16 11:48:19,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:19,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2897 transitions. [2022-11-16 11:48:19,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 160.94444444444446) internal successors, (2897), 18 states have internal predecessors, (2897), 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) [2022-11-16 11:48:19,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 187.0) internal successors, (3553), 19 states have internal predecessors, (3553), 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) [2022-11-16 11:48:19,306 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 187.0) internal successors, (3553), 19 states have internal predecessors, (3553), 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) [2022-11-16 11:48:19,306 INFO L175 Difference]: Start difference. First operand has 162 places, 152 transitions, 334 flow. Second operand 18 states and 2897 transitions. [2022-11-16 11:48:19,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 215 transitions, 678 flow [2022-11-16 11:48:19,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 215 transitions, 676 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:48:19,312 INFO L231 Difference]: Finished difference. Result has 178 places, 164 transitions, 438 flow [2022-11-16 11:48:19,313 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=438, PETRI_PLACES=178, PETRI_TRANSITIONS=164} [2022-11-16 11:48:19,314 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 19 predicate places. [2022-11-16 11:48:19,314 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 164 transitions, 438 flow [2022-11-16 11:48:19,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 158.66666666666666) internal successors, (1904), 12 states have internal predecessors, (1904), 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) [2022-11-16 11:48:19,315 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:19,316 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:19,321 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-16 11:48:19,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-11-16 11:48:19,522 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1417030446, now seen corresponding path program 1 times [2022-11-16 11:48:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:19,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668678140] [2022-11-16 11:48:19,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:19,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:19,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,668 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:19,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:19,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668678140] [2022-11-16 11:48:19,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668678140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:19,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882503964] [2022-11-16 11:48:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:19,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:19,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:19,672 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:19,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 11:48:19,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:19,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:19,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:19,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:19,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882503964] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:19,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:19,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:48:19,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600640102] [2022-11-16 11:48:19,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:19,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:48:19,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:19,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:48:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:48:19,888 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 187 [2022-11-16 11:48:19,889 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 164 transitions, 438 flow. Second operand has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:19,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:19,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 187 [2022-11-16 11:48:19,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:20,215 INFO L130 PetriNetUnfolder]: 156/1179 cut-off events. [2022-11-16 11:48:20,215 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-11-16 11:48:20,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1621 conditions, 1179 events. 156/1179 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 7455 event pairs, 100 based on Foata normal form. 4/982 useless extension candidates. Maximal degree in co-relation 1284. Up to 192 conditions per place. [2022-11-16 11:48:20,226 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 33 selfloop transitions, 11 changer transitions 0/173 dead transitions. [2022-11-16 11:48:20,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 173 transitions, 533 flow [2022-11-16 11:48:20,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:48:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:48:20,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1128 transitions. [2022-11-16 11:48:20,229 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8617265087853323 [2022-11-16 11:48:20,229 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1128 transitions. [2022-11-16 11:48:20,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1128 transitions. [2022-11-16 11:48:20,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:20,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1128 transitions. [2022-11-16 11:48:20,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.14285714285714) internal successors, (1128), 7 states have internal predecessors, (1128), 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) [2022-11-16 11:48:20,235 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-16 11:48:20,236 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-16 11:48:20,236 INFO L175 Difference]: Start difference. First operand has 178 places, 164 transitions, 438 flow. Second operand 7 states and 1128 transitions. [2022-11-16 11:48:20,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 173 transitions, 533 flow [2022-11-16 11:48:20,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 173 transitions, 501 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-11-16 11:48:20,245 INFO L231 Difference]: Finished difference. Result has 174 places, 160 transitions, 401 flow [2022-11-16 11:48:20,245 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=401, PETRI_PLACES=174, PETRI_TRANSITIONS=160} [2022-11-16 11:48:20,247 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 15 predicate places. [2022-11-16 11:48:20,248 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 160 transitions, 401 flow [2022-11-16 11:48:20,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:20,248 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:20,248 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] [2022-11-16 11:48:20,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:20,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:20,465 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:20,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:20,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1799168282, now seen corresponding path program 1 times [2022-11-16 11:48:20,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:20,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425242263] [2022-11-16 11:48:20,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:20,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:20,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:20,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:20,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:20,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425242263] [2022-11-16 11:48:20,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425242263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:20,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:20,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:48:20,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112906937] [2022-11-16 11:48:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:20,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:48:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:20,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:48:20,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:48:20,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-16 11:48:20,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 160 transitions, 401 flow. Second operand has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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) [2022-11-16 11:48:20,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:20,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-16 11:48:20,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:21,257 INFO L130 PetriNetUnfolder]: 901/3304 cut-off events. [2022-11-16 11:48:21,257 INFO L131 PetriNetUnfolder]: For 52/87 co-relation queries the response was YES. [2022-11-16 11:48:21,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 3304 events. 901/3304 cut-off events. For 52/87 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 28363 event pairs, 525 based on Foata normal form. 5/2819 useless extension candidates. Maximal degree in co-relation 4564. Up to 931 conditions per place. [2022-11-16 11:48:21,286 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 35 selfloop transitions, 4 changer transitions 0/181 dead transitions. [2022-11-16 11:48:21,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 181 transitions, 534 flow [2022-11-16 11:48:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:48:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:48:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 831 transitions. [2022-11-16 11:48:21,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8887700534759359 [2022-11-16 11:48:21,289 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 831 transitions. [2022-11-16 11:48:21,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 831 transitions. [2022-11-16 11:48:21,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:21,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 831 transitions. [2022-11-16 11:48:21,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.2) internal successors, (831), 5 states have internal predecessors, (831), 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) [2022-11-16 11:48:21,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-16 11:48:21,294 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-16 11:48:21,295 INFO L175 Difference]: Start difference. First operand has 174 places, 160 transitions, 401 flow. Second operand 5 states and 831 transitions. [2022-11-16 11:48:21,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 181 transitions, 534 flow [2022-11-16 11:48:21,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 181 transitions, 520 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-16 11:48:21,300 INFO L231 Difference]: Finished difference. Result has 176 places, 163 transitions, 417 flow [2022-11-16 11:48:21,300 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=417, PETRI_PLACES=176, PETRI_TRANSITIONS=163} [2022-11-16 11:48:21,301 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 17 predicate places. [2022-11-16 11:48:21,301 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 163 transitions, 417 flow [2022-11-16 11:48:21,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 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) [2022-11-16 11:48:21,302 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:21,302 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] [2022-11-16 11:48:21,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:48:21,302 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:21,303 INFO L85 PathProgramCache]: Analyzing trace with hash -303413960, now seen corresponding path program 1 times [2022-11-16 11:48:21,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:21,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078982048] [2022-11-16 11:48:21,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:21,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:21,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:21,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:21,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078982048] [2022-11-16 11:48:21,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078982048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:21,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:48:21,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:48:21,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068412878] [2022-11-16 11:48:21,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:21,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 11:48:21,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:21,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 11:48:21,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 11:48:21,444 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-16 11:48:21,445 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 163 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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) [2022-11-16 11:48:21,445 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:21,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-16 11:48:21,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:22,298 INFO L130 PetriNetUnfolder]: 1241/3519 cut-off events. [2022-11-16 11:48:22,298 INFO L131 PetriNetUnfolder]: For 262/262 co-relation queries the response was YES. [2022-11-16 11:48:22,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6829 conditions, 3519 events. 1241/3519 cut-off events. For 262/262 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 30426 event pairs, 570 based on Foata normal form. 0/3154 useless extension candidates. Maximal degree in co-relation 5455. Up to 1361 conditions per place. [2022-11-16 11:48:22,334 INFO L137 encePairwiseOnDemand]: 181/187 looper letters, 34 selfloop transitions, 4 changer transitions 0/183 dead transitions. [2022-11-16 11:48:22,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 183 transitions, 542 flow [2022-11-16 11:48:22,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 11:48:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 11:48:22,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 830 transitions. [2022-11-16 11:48:22,337 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8877005347593583 [2022-11-16 11:48:22,337 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 830 transitions. [2022-11-16 11:48:22,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 830 transitions. [2022-11-16 11:48:22,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:22,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 830 transitions. [2022-11-16 11:48:22,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.0) internal successors, (830), 5 states have internal predecessors, (830), 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) [2022-11-16 11:48:22,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-16 11:48:22,342 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 187.0) internal successors, (1122), 6 states have internal predecessors, (1122), 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) [2022-11-16 11:48:22,343 INFO L175 Difference]: Start difference. First operand has 176 places, 163 transitions, 417 flow. Second operand 5 states and 830 transitions. [2022-11-16 11:48:22,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 183 transitions, 542 flow [2022-11-16 11:48:22,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 183 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:48:22,349 INFO L231 Difference]: Finished difference. Result has 182 places, 166 transitions, 445 flow [2022-11-16 11:48:22,350 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=445, PETRI_PLACES=182, PETRI_TRANSITIONS=166} [2022-11-16 11:48:22,350 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 23 predicate places. [2022-11-16 11:48:22,351 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 166 transitions, 445 flow [2022-11-16 11:48:22,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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) [2022-11-16 11:48:22,351 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:22,352 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:48:22,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:48:22,352 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:22,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:22,353 INFO L85 PathProgramCache]: Analyzing trace with hash -533786768, now seen corresponding path program 1 times [2022-11-16 11:48:22,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:22,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552762131] [2022-11-16 11:48:22,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:22,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:22,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:22,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:22,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552762131] [2022-11-16 11:48:22,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552762131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:22,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316829444] [2022-11-16 11:48:22,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:22,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:22,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:22,499 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:22,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 11:48:22,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:22,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:48:22,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:22,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:48:22,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:22,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316829444] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:22,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:22,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:48:22,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917321435] [2022-11-16 11:48:22,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:22,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:48:22,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:22,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:48:22,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:48:22,793 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 187 [2022-11-16 11:48:22,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 166 transitions, 445 flow. Second operand has 7 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 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) [2022-11-16 11:48:22,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:22,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 187 [2022-11-16 11:48:22,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:24,070 INFO L130 PetriNetUnfolder]: 1501/5011 cut-off events. [2022-11-16 11:48:24,070 INFO L131 PetriNetUnfolder]: For 1001/1001 co-relation queries the response was YES. [2022-11-16 11:48:24,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10423 conditions, 5011 events. 1501/5011 cut-off events. For 1001/1001 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 46240 event pairs, 1218 based on Foata normal form. 0/4441 useless extension candidates. Maximal degree in co-relation 9692. Up to 2273 conditions per place. [2022-11-16 11:48:24,127 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 50 selfloop transitions, 8 changer transitions 2/186 dead transitions. [2022-11-16 11:48:24,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 186 transitions, 617 flow [2022-11-16 11:48:24,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:48:24,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:48:24,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1221 transitions. [2022-11-16 11:48:24,131 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8161764705882353 [2022-11-16 11:48:24,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1221 transitions. [2022-11-16 11:48:24,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1221 transitions. [2022-11-16 11:48:24,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:24,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1221 transitions. [2022-11-16 11:48:24,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.625) internal successors, (1221), 8 states have internal predecessors, (1221), 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) [2022-11-16 11:48:24,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-16 11:48:24,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-16 11:48:24,138 INFO L175 Difference]: Start difference. First operand has 182 places, 166 transitions, 445 flow. Second operand 8 states and 1221 transitions. [2022-11-16 11:48:24,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 186 transitions, 617 flow [2022-11-16 11:48:24,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 186 transitions, 615 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:48:24,164 INFO L231 Difference]: Finished difference. Result has 191 places, 168 transitions, 477 flow [2022-11-16 11:48:24,165 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=477, PETRI_PLACES=191, PETRI_TRANSITIONS=168} [2022-11-16 11:48:24,165 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 32 predicate places. [2022-11-16 11:48:24,165 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 168 transitions, 477 flow [2022-11-16 11:48:24,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 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) [2022-11-16 11:48:24,166 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:24,166 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:48:24,177 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:24,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:24,378 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:24,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:24,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1305548894, now seen corresponding path program 1 times [2022-11-16 11:48:24,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:24,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287369231] [2022-11-16 11:48:24,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:24,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:24,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:24,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287369231] [2022-11-16 11:48:24,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287369231] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:24,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852065336] [2022-11-16 11:48:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:24,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:24,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:24,507 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:24,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 11:48:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:24,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 11:48:24,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:24,854 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-16 11:48:24,854 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:24,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852065336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:24,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:24,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2022-11-16 11:48:24,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783734064] [2022-11-16 11:48:24,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:24,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:48:24,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:24,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:48:24,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-16 11:48:24,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 187 [2022-11-16 11:48:24,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 168 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 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) [2022-11-16 11:48:24,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:24,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 187 [2022-11-16 11:48:24,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:25,881 INFO L130 PetriNetUnfolder]: 1326/3761 cut-off events. [2022-11-16 11:48:25,882 INFO L131 PetriNetUnfolder]: For 858/862 co-relation queries the response was YES. [2022-11-16 11:48:25,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8194 conditions, 3761 events. 1326/3761 cut-off events. For 858/862 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 31789 event pairs, 1224 based on Foata normal form. 4/3439 useless extension candidates. Maximal degree in co-relation 7813. Up to 2201 conditions per place. [2022-11-16 11:48:25,942 INFO L137 encePairwiseOnDemand]: 178/187 looper letters, 36 selfloop transitions, 6 changer transitions 15/183 dead transitions. [2022-11-16 11:48:25,943 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 183 transitions, 630 flow [2022-11-16 11:48:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:48:25,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:48:25,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1217 transitions. [2022-11-16 11:48:25,948 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8135026737967914 [2022-11-16 11:48:25,948 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1217 transitions. [2022-11-16 11:48:25,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1217 transitions. [2022-11-16 11:48:25,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:25,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1217 transitions. [2022-11-16 11:48:25,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 152.125) internal successors, (1217), 8 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:48:25,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-16 11:48:25,958 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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) [2022-11-16 11:48:25,958 INFO L175 Difference]: Start difference. First operand has 191 places, 168 transitions, 477 flow. Second operand 8 states and 1217 transitions. [2022-11-16 11:48:25,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 183 transitions, 630 flow [2022-11-16 11:48:25,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 183 transitions, 620 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 11:48:25,972 INFO L231 Difference]: Finished difference. Result has 196 places, 166 transitions, 469 flow [2022-11-16 11:48:25,973 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=469, PETRI_PLACES=196, PETRI_TRANSITIONS=166} [2022-11-16 11:48:25,973 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 37 predicate places. [2022-11-16 11:48:25,974 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 166 transitions, 469 flow [2022-11-16 11:48:25,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.85714285714286) internal successors, (1042), 7 states have internal predecessors, (1042), 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) [2022-11-16 11:48:25,975 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:25,975 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:25,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:26,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:26,187 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:26,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1043390979, now seen corresponding path program 2 times [2022-11-16 11:48:26,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:26,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125443549] [2022-11-16 11:48:26,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:26,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:26,516 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:26,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:26,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125443549] [2022-11-16 11:48:26,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125443549] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:26,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687559597] [2022-11-16 11:48:26,517 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:26,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:26,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:26,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:26,541 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 11:48:26,628 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:48:26,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:26,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-16 11:48:26,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:26,870 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:48:26,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:27,173 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-11-16 11:48:27,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687559597] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:27,174 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:27,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-11-16 11:48:27,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278927052] [2022-11-16 11:48:27,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:27,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 11:48:27,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:27,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 11:48:27,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-11-16 11:48:27,180 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 187 [2022-11-16 11:48:27,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 166 transitions, 469 flow. Second operand has 18 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 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) [2022-11-16 11:48:27,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:27,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 187 [2022-11-16 11:48:27,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:28,805 INFO L130 PetriNetUnfolder]: 1225/4643 cut-off events. [2022-11-16 11:48:28,806 INFO L131 PetriNetUnfolder]: For 944/944 co-relation queries the response was YES. [2022-11-16 11:48:28,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9582 conditions, 4643 events. 1225/4643 cut-off events. For 944/944 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 42613 event pairs, 1092 based on Foata normal form. 2/4450 useless extension candidates. Maximal degree in co-relation 9458. Up to 433 conditions per place. [2022-11-16 11:48:28,946 INFO L137 encePairwiseOnDemand]: 176/187 looper letters, 109 selfloop transitions, 25 changer transitions 0/254 dead transitions. [2022-11-16 11:48:28,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 254 transitions, 987 flow [2022-11-16 11:48:28,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 11:48:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-16 11:48:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3520 transitions. [2022-11-16 11:48:28,954 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7843137254901961 [2022-11-16 11:48:28,954 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3520 transitions. [2022-11-16 11:48:28,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3520 transitions. [2022-11-16 11:48:28,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:28,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3520 transitions. [2022-11-16 11:48:28,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 146.66666666666666) internal successors, (3520), 24 states have internal predecessors, (3520), 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) [2022-11-16 11:48:28,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 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) [2022-11-16 11:48:28,975 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 187.0) internal successors, (4675), 25 states have internal predecessors, (4675), 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) [2022-11-16 11:48:28,976 INFO L175 Difference]: Start difference. First operand has 196 places, 166 transitions, 469 flow. Second operand 24 states and 3520 transitions. [2022-11-16 11:48:28,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 254 transitions, 987 flow [2022-11-16 11:48:29,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 254 transitions, 937 flow, removed 14 selfloop flow, removed 14 redundant places. [2022-11-16 11:48:29,011 INFO L231 Difference]: Finished difference. Result has 201 places, 170 transitions, 508 flow [2022-11-16 11:48:29,012 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=508, PETRI_PLACES=201, PETRI_TRANSITIONS=170} [2022-11-16 11:48:29,015 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 42 predicate places. [2022-11-16 11:48:29,015 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 170 transitions, 508 flow [2022-11-16 11:48:29,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 144.72222222222223) internal successors, (2605), 18 states have internal predecessors, (2605), 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) [2022-11-16 11:48:29,016 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:29,017 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:48:29,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:29,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-16 11:48:29,222 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:29,223 INFO L85 PathProgramCache]: Analyzing trace with hash -195225071, now seen corresponding path program 1 times [2022-11-16 11:48:29,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:29,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320440312] [2022-11-16 11:48:29,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:29,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:29,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:48:29,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:29,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320440312] [2022-11-16 11:48:29,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320440312] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:29,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343008271] [2022-11-16 11:48:29,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:29,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:29,360 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:29,361 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:29,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 11:48:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:29,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:48:29,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:29,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:30,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343008271] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:30,093 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:30,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 11:48:30,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586247619] [2022-11-16 11:48:30,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:30,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:48:30,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:30,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:48:30,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:48:30,100 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 187 [2022-11-16 11:48:30,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 170 transitions, 508 flow. Second operand has 23 states, 23 states have (on average 139.69565217391303) internal successors, (3213), 23 states have internal predecessors, (3213), 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) [2022-11-16 11:48:30,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:30,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 187 [2022-11-16 11:48:30,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:32,808 INFO L130 PetriNetUnfolder]: 3760/8351 cut-off events. [2022-11-16 11:48:32,808 INFO L131 PetriNetUnfolder]: For 559/559 co-relation queries the response was YES. [2022-11-16 11:48:32,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19603 conditions, 8351 events. 3760/8351 cut-off events. For 559/559 co-relation queries the response was YES. Maximal size of possible extension queue 293. Compared 74418 event pairs, 1100 based on Foata normal form. 85/7337 useless extension candidates. Maximal degree in co-relation 12309. Up to 2024 conditions per place. [2022-11-16 11:48:32,885 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 146 selfloop transitions, 32 changer transitions 9/299 dead transitions. [2022-11-16 11:48:32,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 299 transitions, 1235 flow [2022-11-16 11:48:32,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:48:32,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 11:48:32,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3577 transitions. [2022-11-16 11:48:32,894 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7651336898395722 [2022-11-16 11:48:32,894 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3577 transitions. [2022-11-16 11:48:32,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3577 transitions. [2022-11-16 11:48:32,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:32,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3577 transitions. [2022-11-16 11:48:32,905 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 143.08) internal successors, (3577), 25 states have internal predecessors, (3577), 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) [2022-11-16 11:48:32,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-16 11:48:32,915 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-16 11:48:32,915 INFO L175 Difference]: Start difference. First operand has 201 places, 170 transitions, 508 flow. Second operand 25 states and 3577 transitions. [2022-11-16 11:48:32,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 299 transitions, 1235 flow [2022-11-16 11:48:32,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 299 transitions, 1177 flow, removed 2 selfloop flow, removed 17 redundant places. [2022-11-16 11:48:32,934 INFO L231 Difference]: Finished difference. Result has 214 places, 184 transitions, 609 flow [2022-11-16 11:48:32,935 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=450, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=609, PETRI_PLACES=214, PETRI_TRANSITIONS=184} [2022-11-16 11:48:32,935 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 55 predicate places. [2022-11-16 11:48:32,936 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 184 transitions, 609 flow [2022-11-16 11:48:32,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.69565217391303) internal successors, (3213), 23 states have internal predecessors, (3213), 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) [2022-11-16 11:48:32,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:32,937 INFO L209 CegarLoopForPetriNet]: trace histogram [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] [2022-11-16 11:48:32,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:33,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:33,144 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:33,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:33,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1359432317, now seen corresponding path program 1 times [2022-11-16 11:48:33,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:33,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508234646] [2022-11-16 11:48:33,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:33,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 11:48:33,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:33,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508234646] [2022-11-16 11:48:33,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508234646] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2020743699] [2022-11-16 11:48:33,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:33,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:33,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:33,306 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:33,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 11:48:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:33,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 11:48:33,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:33,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:33,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:33,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:33,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2020743699] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:33,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:33,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 23 [2022-11-16 11:48:33,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893330399] [2022-11-16 11:48:33,988 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:33,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-16 11:48:33,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:33,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-16 11:48:33,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-16 11:48:33,994 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 187 [2022-11-16 11:48:33,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 184 transitions, 609 flow. Second operand has 23 states, 23 states have (on average 139.7826086956522) internal successors, (3215), 23 states have internal predecessors, (3215), 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) [2022-11-16 11:48:33,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:33,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 187 [2022-11-16 11:48:33,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:37,059 INFO L130 PetriNetUnfolder]: 5215/10796 cut-off events. [2022-11-16 11:48:37,059 INFO L131 PetriNetUnfolder]: For 2978/3756 co-relation queries the response was YES. [2022-11-16 11:48:37,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28380 conditions, 10796 events. 5215/10796 cut-off events. For 2978/3756 co-relation queries the response was YES. Maximal size of possible extension queue 424. Compared 98482 event pairs, 1658 based on Foata normal form. 903/11098 useless extension candidates. Maximal degree in co-relation 20387. Up to 3079 conditions per place. [2022-11-16 11:48:37,167 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 116 selfloop transitions, 26 changer transitions 72/330 dead transitions. [2022-11-16 11:48:37,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 330 transitions, 1519 flow [2022-11-16 11:48:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 11:48:37,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-11-16 11:48:37,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 3574 transitions. [2022-11-16 11:48:37,175 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7644919786096257 [2022-11-16 11:48:37,175 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 3574 transitions. [2022-11-16 11:48:37,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 3574 transitions. [2022-11-16 11:48:37,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:37,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 3574 transitions. [2022-11-16 11:48:37,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 142.96) internal successors, (3574), 25 states have internal predecessors, (3574), 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) [2022-11-16 11:48:37,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-16 11:48:37,201 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 187.0) internal successors, (4862), 26 states have internal predecessors, (4862), 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) [2022-11-16 11:48:37,202 INFO L175 Difference]: Start difference. First operand has 214 places, 184 transitions, 609 flow. Second operand 25 states and 3574 transitions. [2022-11-16 11:48:37,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 330 transitions, 1519 flow [2022-11-16 11:48:37,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 330 transitions, 1482 flow, removed 3 selfloop flow, removed 10 redundant places. [2022-11-16 11:48:37,233 INFO L231 Difference]: Finished difference. Result has 233 places, 183 transitions, 641 flow [2022-11-16 11:48:37,234 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=641, PETRI_PLACES=233, PETRI_TRANSITIONS=183} [2022-11-16 11:48:37,235 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 74 predicate places. [2022-11-16 11:48:37,236 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 183 transitions, 641 flow [2022-11-16 11:48:37,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 139.7826086956522) internal successors, (3215), 23 states have internal predecessors, (3215), 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) [2022-11-16 11:48:37,237 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:37,237 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:37,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:37,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 11:48:37,447 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:37,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:37,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1556356981, now seen corresponding path program 1 times [2022-11-16 11:48:37,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:37,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936900197] [2022-11-16 11:48:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:37,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:37,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:48:37,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936900197] [2022-11-16 11:48:37,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936900197] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:37,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202308259] [2022-11-16 11:48:37,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:37,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:37,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:37,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 11:48:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:37,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:37,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:37,756 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:48:37,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:37,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202308259] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:37,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:37,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:48:37,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928561419] [2022-11-16 11:48:37,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:37,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:48:37,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:37,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:48:37,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:48:37,761 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-16 11:48:37,763 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 183 transitions, 641 flow. Second operand has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 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) [2022-11-16 11:48:37,763 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:37,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-16 11:48:37,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:39,004 INFO L130 PetriNetUnfolder]: 2026/6664 cut-off events. [2022-11-16 11:48:39,004 INFO L131 PetriNetUnfolder]: For 2730/2760 co-relation queries the response was YES. [2022-11-16 11:48:39,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16286 conditions, 6664 events. 2026/6664 cut-off events. For 2730/2760 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 67070 event pairs, 390 based on Foata normal form. 110/6624 useless extension candidates. Maximal degree in co-relation 11978. Up to 1145 conditions per place. [2022-11-16 11:48:39,077 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 42 selfloop transitions, 8 changer transitions 0/206 dead transitions. [2022-11-16 11:48:39,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 206 transitions, 800 flow [2022-11-16 11:48:39,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:48:39,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:48:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1153 transitions. [2022-11-16 11:48:39,091 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8808250572956455 [2022-11-16 11:48:39,091 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1153 transitions. [2022-11-16 11:48:39,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1153 transitions. [2022-11-16 11:48:39,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:39,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1153 transitions. [2022-11-16 11:48:39,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.71428571428572) internal successors, (1153), 7 states have internal predecessors, (1153), 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) [2022-11-16 11:48:39,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-16 11:48:39,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-16 11:48:39,112 INFO L175 Difference]: Start difference. First operand has 233 places, 183 transitions, 641 flow. Second operand 7 states and 1153 transitions. [2022-11-16 11:48:39,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 206 transitions, 800 flow [2022-11-16 11:48:39,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 206 transitions, 759 flow, removed 6 selfloop flow, removed 14 redundant places. [2022-11-16 11:48:39,160 INFO L231 Difference]: Finished difference. Result has 212 places, 181 transitions, 604 flow [2022-11-16 11:48:39,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=604, PETRI_PLACES=212, PETRI_TRANSITIONS=181} [2022-11-16 11:48:39,162 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 53 predicate places. [2022-11-16 11:48:39,162 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 181 transitions, 604 flow [2022-11-16 11:48:39,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 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) [2022-11-16 11:48:39,163 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:39,164 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2022-11-16 11:48:39,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:39,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-16 11:48:39,370 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:39,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:39,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1503202106, now seen corresponding path program 2 times [2022-11-16 11:48:39,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:39,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045647552] [2022-11-16 11:48:39,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:39,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:39,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045647552] [2022-11-16 11:48:39,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045647552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:39,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519866953] [2022-11-16 11:48:39,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:39,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:39,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:39,957 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:39,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 11:48:40,072 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:48:40,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:40,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:40,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:40,280 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:48:40,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:40,475 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:48:40,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519866953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:40,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:40,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-16 11:48:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855077445] [2022-11-16 11:48:40,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:40,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:48:40,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:40,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:48:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:48:40,483 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 187 [2022-11-16 11:48:40,485 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 181 transitions, 604 flow. Second operand has 19 states, 19 states have (on average 137.31578947368422) internal successors, (2609), 19 states have internal predecessors, (2609), 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) [2022-11-16 11:48:40,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:40,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 187 [2022-11-16 11:48:40,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:43,222 INFO L130 PetriNetUnfolder]: 4160/10448 cut-off events. [2022-11-16 11:48:43,222 INFO L131 PetriNetUnfolder]: For 4722/5479 co-relation queries the response was YES. [2022-11-16 11:48:43,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27142 conditions, 10448 events. 4160/10448 cut-off events. For 4722/5479 co-relation queries the response was YES. Maximal size of possible extension queue 364. Compared 102310 event pairs, 760 based on Foata normal form. 754/10987 useless extension candidates. Maximal degree in co-relation 19149. Up to 1980 conditions per place. [2022-11-16 11:48:43,307 INFO L137 encePairwiseOnDemand]: 169/187 looper letters, 138 selfloop transitions, 38 changer transitions 50/337 dead transitions. [2022-11-16 11:48:43,307 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 337 transitions, 1613 flow [2022-11-16 11:48:43,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-16 11:48:43,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-16 11:48:43,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4168 transitions. [2022-11-16 11:48:43,315 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7429590017825312 [2022-11-16 11:48:43,315 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4168 transitions. [2022-11-16 11:48:43,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4168 transitions. [2022-11-16 11:48:43,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:43,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4168 transitions. [2022-11-16 11:48:43,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 138.93333333333334) internal successors, (4168), 30 states have internal predecessors, (4168), 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) [2022-11-16 11:48:43,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 187.0) internal successors, (5797), 31 states have internal predecessors, (5797), 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) [2022-11-16 11:48:43,337 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 187.0) internal successors, (5797), 31 states have internal predecessors, (5797), 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) [2022-11-16 11:48:43,337 INFO L175 Difference]: Start difference. First operand has 212 places, 181 transitions, 604 flow. Second operand 30 states and 4168 transitions. [2022-11-16 11:48:43,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 337 transitions, 1613 flow [2022-11-16 11:48:43,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 337 transitions, 1587 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 11:48:43,387 INFO L231 Difference]: Finished difference. Result has 237 places, 187 transitions, 728 flow [2022-11-16 11:48:43,387 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=583, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=728, PETRI_PLACES=237, PETRI_TRANSITIONS=187} [2022-11-16 11:48:43,388 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 78 predicate places. [2022-11-16 11:48:43,388 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 187 transitions, 728 flow [2022-11-16 11:48:43,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.31578947368422) internal successors, (2609), 19 states have internal predecessors, (2609), 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) [2022-11-16 11:48:43,389 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:43,390 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:43,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:43,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:43,595 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2050185837, now seen corresponding path program 1 times [2022-11-16 11:48:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651147153] [2022-11-16 11:48:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:43,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:48:43,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:43,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651147153] [2022-11-16 11:48:43,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651147153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:43,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490619664] [2022-11-16 11:48:43,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:43,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:43,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:43,934 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:43,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 11:48:44,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:44,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:44,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-16 11:48:44,107 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 11:48:44,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490619664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:48:44,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 11:48:44,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 11:48:44,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193285836] [2022-11-16 11:48:44,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:48:44,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 11:48:44,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:44,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 11:48:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:48:44,113 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 187 [2022-11-16 11:48:44,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 187 transitions, 728 flow. Second operand has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2022-11-16 11:48:44,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:44,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 187 [2022-11-16 11:48:44,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:45,030 INFO L130 PetriNetUnfolder]: 1890/4227 cut-off events. [2022-11-16 11:48:45,030 INFO L131 PetriNetUnfolder]: For 1899/1899 co-relation queries the response was YES. [2022-11-16 11:48:45,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11087 conditions, 4227 events. 1890/4227 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 36384 event pairs, 115 based on Foata normal form. 126/4189 useless extension candidates. Maximal degree in co-relation 8646. Up to 1260 conditions per place. [2022-11-16 11:48:45,063 INFO L137 encePairwiseOnDemand]: 182/187 looper letters, 38 selfloop transitions, 8 changer transitions 0/209 dead transitions. [2022-11-16 11:48:45,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 209 transitions, 869 flow [2022-11-16 11:48:45,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 11:48:45,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 11:48:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1150 transitions. [2022-11-16 11:48:45,066 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.878533231474408 [2022-11-16 11:48:45,066 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1150 transitions. [2022-11-16 11:48:45,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1150 transitions. [2022-11-16 11:48:45,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:45,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1150 transitions. [2022-11-16 11:48:45,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 164.28571428571428) internal successors, (1150), 7 states have internal predecessors, (1150), 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) [2022-11-16 11:48:45,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-16 11:48:45,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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) [2022-11-16 11:48:45,073 INFO L175 Difference]: Start difference. First operand has 237 places, 187 transitions, 728 flow. Second operand 7 states and 1150 transitions. [2022-11-16 11:48:45,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 209 transitions, 869 flow [2022-11-16 11:48:45,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 209 transitions, 819 flow, removed 3 selfloop flow, removed 14 redundant places. [2022-11-16 11:48:45,093 INFO L231 Difference]: Finished difference. Result has 222 places, 185 transitions, 680 flow [2022-11-16 11:48:45,094 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=680, PETRI_PLACES=222, PETRI_TRANSITIONS=185} [2022-11-16 11:48:45,095 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 63 predicate places. [2022-11-16 11:48:45,095 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 185 transitions, 680 flow [2022-11-16 11:48:45,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.66666666666666) internal successors, (964), 6 states have internal predecessors, (964), 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) [2022-11-16 11:48:45,096 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:48:45,096 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:45,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:45,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 11:48:45,301 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2022-11-16 11:48:45,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:48:45,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1859553496, now seen corresponding path program 2 times [2022-11-16 11:48:45,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:48:45,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582422862] [2022-11-16 11:48:45,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:48:45,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:48:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:48:45,672 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:48:45,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:48:45,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582422862] [2022-11-16 11:48:45,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582422862] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 11:48:45,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228763312] [2022-11-16 11:48:45,672 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 11:48:45,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:45,673 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:48:45,675 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 11:48:45,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 11:48:45,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 11:48:45,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 11:48:45,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 11:48:45,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 11:48:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:48:46,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 11:48:46,237 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-16 11:48:46,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228763312] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 11:48:46,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 11:48:46,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 19 [2022-11-16 11:48:46,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049899177] [2022-11-16 11:48:46,239 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 11:48:46,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-16 11:48:46,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:48:46,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-16 11:48:46,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-11-16 11:48:46,243 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 187 [2022-11-16 11:48:46,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 185 transitions, 680 flow. Second operand has 19 states, 19 states have (on average 137.42105263157896) internal successors, (2611), 19 states have internal predecessors, (2611), 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) [2022-11-16 11:48:46,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:48:46,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 187 [2022-11-16 11:48:46,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:48:48,413 INFO L130 PetriNetUnfolder]: 3654/7952 cut-off events. [2022-11-16 11:48:48,413 INFO L131 PetriNetUnfolder]: For 7480/8892 co-relation queries the response was YES. [2022-11-16 11:48:48,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23835 conditions, 7952 events. 3654/7952 cut-off events. For 7480/8892 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 70212 event pairs, 720 based on Foata normal form. 1533/9306 useless extension candidates. Maximal degree in co-relation 17141. Up to 2124 conditions per place. [2022-11-16 11:48:48,447 INFO L137 encePairwiseOnDemand]: 170/187 looper letters, 0 selfloop transitions, 0 changer transitions 302/302 dead transitions. [2022-11-16 11:48:48,447 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 302 transitions, 1572 flow [2022-11-16 11:48:48,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-16 11:48:48,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-11-16 11:48:48,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3604 transitions. [2022-11-16 11:48:48,455 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7412587412587412 [2022-11-16 11:48:48,455 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3604 transitions. [2022-11-16 11:48:48,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3604 transitions. [2022-11-16 11:48:48,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:48:48,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3604 transitions. [2022-11-16 11:48:48,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 138.6153846153846) internal successors, (3604), 26 states have internal predecessors, (3604), 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) [2022-11-16 11:48:48,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 187.0) internal successors, (5049), 27 states have internal predecessors, (5049), 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) [2022-11-16 11:48:48,474 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 187.0) internal successors, (5049), 27 states have internal predecessors, (5049), 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) [2022-11-16 11:48:48,475 INFO L175 Difference]: Start difference. First operand has 222 places, 185 transitions, 680 flow. Second operand 26 states and 3604 transitions. [2022-11-16 11:48:48,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 302 transitions, 1572 flow [2022-11-16 11:48:48,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 302 transitions, 1546 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-11-16 11:48:48,525 INFO L231 Difference]: Finished difference. Result has 240 places, 0 transitions, 0 flow [2022-11-16 11:48:48,525 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=0, PETRI_PLACES=240, PETRI_TRANSITIONS=0} [2022-11-16 11:48:48,526 INFO L288 CegarLoopForPetriNet]: 159 programPoint places, 81 predicate places. [2022-11-16 11:48:48,526 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 0 transitions, 0 flow [2022-11-16 11:48:48,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 137.42105263157896) internal successors, (2611), 19 states have internal predecessors, (2611), 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) [2022-11-16 11:48:48,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 13 remaining) [2022-11-16 11:48:48,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2022-11-16 11:48:48,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2022-11-16 11:48:48,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2022-11-16 11:48:48,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2022-11-16 11:48:48,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2022-11-16 11:48:48,531 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 13 remaining) [2022-11-16 11:48:48,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 13 remaining) [2022-11-16 11:48:48,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 13 remaining) [2022-11-16 11:48:48,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2022-11-16 11:48:48,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2022-11-16 11:48:48,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2022-11-16 11:48:48,532 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2022-11-16 11:48:48,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 11:48:48,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 11:48:48,738 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:48:48,742 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 11:48:48,742 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 11:48:48,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 11:48:48 BasicIcfg [2022-11-16 11:48:48,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 11:48:48,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 11:48:48,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 11:48:48,748 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 11:48:48,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:48:16" (3/4) ... [2022-11-16 11:48:48,751 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 11:48:48,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 11:48:48,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 11:48:48,755 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-16 11:48:48,761 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-16 11:48:48,761 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 11:48:48,761 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 11:48:48,762 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 11:48:48,809 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 11:48:48,809 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 11:48:48,811 INFO L158 Benchmark]: Toolchain (without parser) took 33539.14ms. Allocated memory was 132.1MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 98.2MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 726.6MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,811 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.8MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 11:48:48,811 INFO L158 Benchmark]: CACSL2BoogieTranslator took 319.04ms. Allocated memory is still 132.1MB. Free memory was 97.9MB in the beginning and 106.7MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,812 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.93ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 104.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,812 INFO L158 Benchmark]: Boogie Preprocessor took 31.76ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 103.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,813 INFO L158 Benchmark]: RCFGBuilder took 719.98ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 80.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,813 INFO L158 Benchmark]: TraceAbstraction took 32340.90ms. Allocated memory was 132.1MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 80.4MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 949.8MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,813 INFO L158 Benchmark]: Witness Printer took 62.14ms. Allocated memory is still 5.5GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 11:48:48,816 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 83.9MB. Free memory was 56.9MB in the beginning and 56.8MB in the end (delta: 30.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 319.04ms. Allocated memory is still 132.1MB. Free memory was 97.9MB in the beginning and 106.7MB in the end (delta: -8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.93ms. Allocated memory is still 132.1MB. Free memory was 106.7MB in the beginning and 104.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.76ms. Allocated memory is still 132.1MB. Free memory was 104.7MB in the beginning and 103.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 719.98ms. Allocated memory is still 132.1MB. Free memory was 103.0MB in the beginning and 80.9MB in the end (delta: 22.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 32340.90ms. Allocated memory was 132.1MB in the beginning and 5.5GB in the end (delta: 5.3GB). Free memory was 80.4MB in the beginning and 4.7GB in the end (delta: -4.6GB). Peak memory consumption was 949.8MB. Max. memory is 16.1GB. * Witness Printer took 62.14ms. Allocated memory is still 5.5GB. Free memory was 4.7GB in the beginning and 4.7GB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 56]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 74]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 125]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 213 locations, 13 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.1s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 21.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2948 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2948 mSDsluCounter, 478 SdHoareTripleChecker+Invalid, 2.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 384 mSDsCounter, 97 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3853 IncrementalHoareTripleChecker+Invalid, 3950 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 97 mSolverCounterUnsat, 94 mSDtfsCounter, 3853 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2055 GetRequests, 1757 SyntacticMatches, 13 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1919 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=12, InterpolantAutomatonStates: 200, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 2616 NumberOfCodeBlocks, 2516 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 3242 ConstructedInterpolants, 0 QuantifiedInterpolants, 6448 SizeOfPredicates, 54 NumberOfNonLiveVariables, 2346 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 8 PerfectInterpolantSequences, 299/532 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 11:48:48,849 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8f2a623-68da-40f0-9b7b-f1844a4d2deb/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE