./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.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_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/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_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/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_92370801-e9a4-49f7-86d5-8887af6bee22/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 e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a --- 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 12:42:16,347 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:42:16,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:42:16,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:42:16,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:42:16,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:42:16,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:42:16,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:42:16,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:42:16,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:42:16,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:42:16,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:42:16,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:42:16,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:42:16,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:42:16,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:42:16,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:42:16,451 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:42:16,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:42:16,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:42:16,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:42:16,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:42:16,466 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:42:16,467 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:42:16,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:42:16,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:42:16,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:42:16,481 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:42:16,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:42:16,485 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:42:16,485 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:42:16,487 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:42:16,489 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:42:16,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:42:16,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:42:16,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:42:16,496 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:42:16,497 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:42:16,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:42:16,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:42:16,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:42:16,500 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-16 12:42:16,554 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:42:16,554 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:42:16,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:42:16,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:42:16,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:42:16,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:42:16,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:42:16,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:42:16,558 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:42:16,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:42:16,560 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:42:16,561 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:42:16,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:42:16,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:42:16,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:42:16,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:42:16,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:42:16,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:42:16,562 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-16 12:42:16,563 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:42:16,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:42:16,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:42:16,563 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:42:16,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:42:16,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:42:16,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:42:16,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:16,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:42:16,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:42:16,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:42:16,566 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:42:16,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:42:16,566 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:42:16,567 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:42:16,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:42:16,567 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_92370801-e9a4-49f7-86d5-8887af6bee22/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e9065224c0b163ad014fc0aee4009feab43ed37ef70e06d8d8f3b14d045f755a [2022-11-16 12:42:16,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:42:17,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:42:17,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:42:17,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:42:17,006 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:42:17,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-11-16 12:42:17,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/data/fb0237d41/10436f4c88514f1f900773e51847ff0b/FLAG2887aef1e [2022-11-16 12:42:17,679 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:42:17,680 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c [2022-11-16 12:42:17,689 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/data/fb0237d41/10436f4c88514f1f900773e51847ff0b/FLAG2887aef1e [2022-11-16 12:42:18,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/data/fb0237d41/10436f4c88514f1f900773e51847ff0b [2022-11-16 12:42:18,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:42:18,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:42:18,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:18,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:42:18,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:42:18,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@787c5410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18, skipping insertion in model container [2022-11-16 12:42:18,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:42:18,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:42:18,392 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_92370801-e9a4-49f7-86d5-8887af6bee22/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-11-16 12:42:18,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:18,422 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:42:18,470 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_92370801-e9a4-49f7-86d5-8887af6bee22/sv-benchmarks/c/weaver/chl-chromosome-opt-symm.wvr.c[2566,2579] [2022-11-16 12:42:18,492 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:42:18,519 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:42:18,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18 WrapperNode [2022-11-16 12:42:18,520 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:42:18,522 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:18,522 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:42:18,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:42:18,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,605 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 184 [2022-11-16 12:42:18,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:42:18,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:42:18,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:42:18,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:42:18,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,639 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,666 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,667 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:42:18,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:42:18,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:42:18,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:42:18,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (1/1) ... [2022-11-16 12:42:18,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:42:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:18,735 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:42:18,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:42:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:42:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 12:42:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 12:42:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 12:42:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 12:42:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:42:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 12:42:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 12:42:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-16 12:42:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:42:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:42:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 12:42:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 12:42:18,808 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 12:42:19,038 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:42:19,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:42:19,529 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:42:19,542 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:42:19,542 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-16 12:42:19,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:19 BoogieIcfgContainer [2022-11-16 12:42:19,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:42:19,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:42:19,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:42:19,567 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:42:19,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:42:18" (1/3) ... [2022-11-16 12:42:19,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32232af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:19, skipping insertion in model container [2022-11-16 12:42:19,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:42:18" (2/3) ... [2022-11-16 12:42:19,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32232af0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:42:19, skipping insertion in model container [2022-11-16 12:42:19,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:19" (3/3) ... [2022-11-16 12:42:19,571 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-opt-symm.wvr.c [2022-11-16 12:42:19,582 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 12:42:19,606 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:42:19,606 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-11-16 12:42:19,606 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 12:42:19,755 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-16 12:42:19,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 231 transitions, 478 flow [2022-11-16 12:42:19,917 INFO L130 PetriNetUnfolder]: 19/229 cut-off events. [2022-11-16 12:42:19,918 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-16 12:42:19,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 229 events. 19/229 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 262 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2022-11-16 12:42:19,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 231 transitions, 478 flow [2022-11-16 12:42:19,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 211 transitions, 434 flow [2022-11-16 12:42:19,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:42:19,958 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;@5e7671cb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:42:19,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-11-16 12:42:19,992 INFO L130 PetriNetUnfolder]: 3/57 cut-off events. [2022-11-16 12:42:19,992 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-16 12:42:19,992 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:19,993 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] [2022-11-16 12:42:19,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:20,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1947104242, now seen corresponding path program 1 times [2022-11-16 12:42:20,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:20,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560896010] [2022-11-16 12:42:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:20,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:20,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:20,522 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 12:42:20,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:20,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560896010] [2022-11-16 12:42:20,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560896010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:20,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:20,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:20,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296285802] [2022-11-16 12:42:20,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:20,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:20,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:20,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:20,625 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-16 12:42:20,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 211 transitions, 434 flow. Second operand has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 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 12:42:20,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:20,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-16 12:42:20,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:20,933 INFO L130 PetriNetUnfolder]: 15/336 cut-off events. [2022-11-16 12:42:20,933 INFO L131 PetriNetUnfolder]: For 16/18 co-relation queries the response was YES. [2022-11-16 12:42:20,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 336 events. 15/336 cut-off events. For 16/18 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 872 event pairs, 0 based on Foata normal form. 16/314 useless extension candidates. Maximal degree in co-relation 285. Up to 30 conditions per place. [2022-11-16 12:42:20,940 INFO L137 encePairwiseOnDemand]: 208/231 looper letters, 40 selfloop transitions, 9 changer transitions 4/222 dead transitions. [2022-11-16 12:42:20,941 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 222 transitions, 566 flow [2022-11-16 12:42:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:20,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:20,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1024 transitions. [2022-11-16 12:42:20,964 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8865800865800866 [2022-11-16 12:42:20,965 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1024 transitions. [2022-11-16 12:42:20,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1024 transitions. [2022-11-16 12:42:20,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:20,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1024 transitions. [2022-11-16 12:42:20,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.8) internal successors, (1024), 5 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 12:42:20,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:20,996 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:20,999 INFO L175 Difference]: Start difference. First operand has 200 places, 211 transitions, 434 flow. Second operand 5 states and 1024 transitions. [2022-11-16 12:42:21,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 222 transitions, 566 flow [2022-11-16 12:42:21,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 222 transitions, 550 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:42:21,013 INFO L231 Difference]: Finished difference. Result has 203 places, 204 transitions, 465 flow [2022-11-16 12:42:21,016 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=406, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=203, PETRI_TRANSITIONS=204} [2022-11-16 12:42:21,020 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 3 predicate places. [2022-11-16 12:42:21,020 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 204 transitions, 465 flow [2022-11-16 12:42:21,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 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 12:42:21,022 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:21,022 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] [2022-11-16 12:42:21,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:42:21,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:21,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:21,024 INFO L85 PathProgramCache]: Analyzing trace with hash 744404834, now seen corresponding path program 1 times [2022-11-16 12:42:21,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:21,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130658546] [2022-11-16 12:42:21,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:21,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:21,426 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 12:42:21,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:21,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130658546] [2022-11-16 12:42:21,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130658546] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:21,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1478866472] [2022-11-16 12:42:21,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:21,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:21,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:21,433 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:21,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:42:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:21,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:42:21,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:21,737 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 12:42:21,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:21,828 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 12:42:21,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1478866472] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:21,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:21,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-16 12:42:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450272779] [2022-11-16 12:42:21,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:21,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 12:42:21,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:21,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 12:42:21,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:42:21,840 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-16 12:42:21,845 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 204 transitions, 465 flow. Second operand has 12 states, 12 states have (on average 193.66666666666666) internal successors, (2324), 12 states have internal predecessors, (2324), 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 12:42:21,845 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:21,845 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-16 12:42:21,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:22,513 INFO L130 PetriNetUnfolder]: 36/741 cut-off events. [2022-11-16 12:42:22,514 INFO L131 PetriNetUnfolder]: For 37/42 co-relation queries the response was YES. [2022-11-16 12:42:22,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 925 conditions, 741 events. 36/741 cut-off events. For 37/42 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3342 event pairs, 0 based on Foata normal form. 6/672 useless extension candidates. Maximal degree in co-relation 544. Up to 23 conditions per place. [2022-11-16 12:42:22,532 INFO L137 encePairwiseOnDemand]: 216/231 looper letters, 76 selfloop transitions, 40 changer transitions 0/285 dead transitions. [2022-11-16 12:42:22,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 285 transitions, 925 flow [2022-11-16 12:42:22,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 12:42:22,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-16 12:42:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3560 transitions. [2022-11-16 12:42:22,552 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8561808561808562 [2022-11-16 12:42:22,552 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3560 transitions. [2022-11-16 12:42:22,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3560 transitions. [2022-11-16 12:42:22,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:22,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3560 transitions. [2022-11-16 12:42:22,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 197.77777777777777) internal successors, (3560), 18 states have internal predecessors, (3560), 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 12:42:22,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 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 12:42:22,591 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 231.0) internal successors, (4389), 19 states have internal predecessors, (4389), 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 12:42:22,591 INFO L175 Difference]: Start difference. First operand has 203 places, 204 transitions, 465 flow. Second operand 18 states and 3560 transitions. [2022-11-16 12:42:22,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 285 transitions, 925 flow [2022-11-16 12:42:22,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 285 transitions, 920 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:42:22,611 INFO L231 Difference]: Finished difference. Result has 219 places, 231 transitions, 698 flow [2022-11-16 12:42:22,612 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=698, PETRI_PLACES=219, PETRI_TRANSITIONS=231} [2022-11-16 12:42:22,613 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 19 predicate places. [2022-11-16 12:42:22,614 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 231 transitions, 698 flow [2022-11-16 12:42:22,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 193.66666666666666) internal successors, (2324), 12 states have internal predecessors, (2324), 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 12:42:22,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:22,618 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] [2022-11-16 12:42:22,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:22,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:22,825 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1601713787, now seen corresponding path program 1 times [2022-11-16 12:42:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694015893] [2022-11-16 12:42:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:22,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:22,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:23,034 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 12:42:23,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:23,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694015893] [2022-11-16 12:42:23,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694015893] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:23,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271920806] [2022-11-16 12:42:23,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:23,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:23,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:23,039 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:23,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:42:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:23,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:42:23,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:23,248 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 12:42:23,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:23,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271920806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:23,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:23,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:42:23,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805872518] [2022-11-16 12:42:23,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:23,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:42:23,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:23,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:42:23,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:42:23,254 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-16 12:42:23,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 231 transitions, 698 flow. Second operand has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 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 12:42:23,257 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:23,257 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-16 12:42:23,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:23,621 INFO L130 PetriNetUnfolder]: 36/733 cut-off events. [2022-11-16 12:42:23,621 INFO L131 PetriNetUnfolder]: For 131/136 co-relation queries the response was YES. [2022-11-16 12:42:23,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 962 conditions, 733 events. 36/733 cut-off events. For 131/136 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3314 event pairs, 0 based on Foata normal form. 8/666 useless extension candidates. Maximal degree in co-relation 737. Up to 48 conditions per place. [2022-11-16 12:42:23,630 INFO L137 encePairwiseOnDemand]: 220/231 looper letters, 41 selfloop transitions, 27 changer transitions 0/237 dead transitions. [2022-11-16 12:42:23,630 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 237 transitions, 816 flow [2022-11-16 12:42:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:42:23,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:42:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1386 transitions. [2022-11-16 12:42:23,635 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8571428571428571 [2022-11-16 12:42:23,636 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1386 transitions. [2022-11-16 12:42:23,636 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1386 transitions. [2022-11-16 12:42:23,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:23,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1386 transitions. [2022-11-16 12:42:23,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 198.0) internal successors, (1386), 7 states have internal predecessors, (1386), 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 12:42:23,647 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 12:42:23,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 12:42:23,649 INFO L175 Difference]: Start difference. First operand has 219 places, 231 transitions, 698 flow. Second operand 7 states and 1386 transitions. [2022-11-16 12:42:23,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 237 transitions, 816 flow [2022-11-16 12:42:23,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 237 transitions, 742 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-11-16 12:42:23,665 INFO L231 Difference]: Finished difference. Result has 214 places, 223 transitions, 624 flow [2022-11-16 12:42:23,666 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=570, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=624, PETRI_PLACES=214, PETRI_TRANSITIONS=223} [2022-11-16 12:42:23,669 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 14 predicate places. [2022-11-16 12:42:23,670 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 223 transitions, 624 flow [2022-11-16 12:42:23,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.33333333333334) internal successors, (1160), 6 states have internal predecessors, (1160), 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 12:42:23,671 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:23,672 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] [2022-11-16 12:42:23,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:23,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-16 12:42:23,879 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:23,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:23,881 INFO L85 PathProgramCache]: Analyzing trace with hash 846326030, now seen corresponding path program 2 times [2022-11-16 12:42:23,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:23,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728286751] [2022-11-16 12:42:23,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:23,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:24,304 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 12:42:24,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:24,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728286751] [2022-11-16 12:42:24,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728286751] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:24,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305324979] [2022-11-16 12:42:24,306 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:24,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:24,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:24,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:24,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:42:24,434 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-16 12:42:24,436 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:24,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:42:24,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:24,642 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 12:42:24,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:24,838 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 12:42:24,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305324979] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:24,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:24,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 17 [2022-11-16 12:42:24,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44621224] [2022-11-16 12:42:24,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:24,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 12:42:24,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 12:42:24,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2022-11-16 12:42:24,847 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-11-16 12:42:24,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 223 transitions, 624 flow. Second operand has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 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 12:42:24,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:24,852 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-11-16 12:42:24,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:25,717 INFO L130 PetriNetUnfolder]: 43/852 cut-off events. [2022-11-16 12:42:25,717 INFO L131 PetriNetUnfolder]: For 120/126 co-relation queries the response was YES. [2022-11-16 12:42:25,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 852 events. 43/852 cut-off events. For 120/126 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 4060 event pairs, 0 based on Foata normal form. 2/764 useless extension candidates. Maximal degree in co-relation 744. Up to 15 conditions per place. [2022-11-16 12:42:25,726 INFO L137 encePairwiseOnDemand]: 215/231 looper letters, 89 selfloop transitions, 43 changer transitions 0/291 dead transitions. [2022-11-16 12:42:25,727 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 291 transitions, 1054 flow [2022-11-16 12:42:25,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:42:25,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-11-16 12:42:25,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3754 transitions. [2022-11-16 12:42:25,755 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8125541125541126 [2022-11-16 12:42:25,755 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3754 transitions. [2022-11-16 12:42:25,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3754 transitions. [2022-11-16 12:42:25,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:25,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3754 transitions. [2022-11-16 12:42:25,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 187.7) internal successors, (3754), 20 states have internal predecessors, (3754), 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 12:42:25,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 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 12:42:25,780 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 231.0) internal successors, (4851), 21 states have internal predecessors, (4851), 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 12:42:25,780 INFO L175 Difference]: Start difference. First operand has 214 places, 223 transitions, 624 flow. Second operand 20 states and 3754 transitions. [2022-11-16 12:42:25,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 291 transitions, 1054 flow [2022-11-16 12:42:25,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 291 transitions, 1001 flow, removed 0 selfloop flow, removed 9 redundant places. [2022-11-16 12:42:25,788 INFO L231 Difference]: Finished difference. Result has 223 places, 226 transitions, 670 flow [2022-11-16 12:42:25,788 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=670, PETRI_PLACES=223, PETRI_TRANSITIONS=226} [2022-11-16 12:42:25,789 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 23 predicate places. [2022-11-16 12:42:25,790 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 226 transitions, 670 flow [2022-11-16 12:42:25,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 185.0) internal successors, (3330), 18 states have internal predecessors, (3330), 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 12:42:25,791 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:25,792 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:25,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:25,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:25,999 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash -964294738, now seen corresponding path program 1 times [2022-11-16 12:42:26,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682370682] [2022-11-16 12:42:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:26,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:26,158 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 12:42:26,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:26,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682370682] [2022-11-16 12:42:26,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682370682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:26,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:26,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:26,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193560188] [2022-11-16 12:42:26,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:26,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:26,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:26,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:26,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:26,163 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 231 [2022-11-16 12:42:26,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 226 transitions, 670 flow. Second operand has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 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 12:42:26,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:26,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 231 [2022-11-16 12:42:26,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:26,512 INFO L130 PetriNetUnfolder]: 115/1302 cut-off events. [2022-11-16 12:42:26,513 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2022-11-16 12:42:26,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1749 conditions, 1302 events. 115/1302 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 8317 event pairs, 36 based on Foata normal form. 0/1176 useless extension candidates. Maximal degree in co-relation 418. Up to 145 conditions per place. [2022-11-16 12:42:26,524 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 18 selfloop transitions, 3 changer transitions 0/235 dead transitions. [2022-11-16 12:42:26,525 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 235 transitions, 735 flow [2022-11-16 12:42:26,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1057 transitions. [2022-11-16 12:42:26,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9151515151515152 [2022-11-16 12:42:26,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1057 transitions. [2022-11-16 12:42:26,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1057 transitions. [2022-11-16 12:42:26,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:26,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1057 transitions. [2022-11-16 12:42:26,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.4) internal successors, (1057), 5 states have internal predecessors, (1057), 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 12:42:26,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:26,539 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:26,539 INFO L175 Difference]: Start difference. First operand has 223 places, 226 transitions, 670 flow. Second operand 5 states and 1057 transitions. [2022-11-16 12:42:26,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 235 transitions, 735 flow [2022-11-16 12:42:26,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 235 transitions, 642 flow, removed 4 selfloop flow, removed 15 redundant places. [2022-11-16 12:42:26,547 INFO L231 Difference]: Finished difference. Result has 215 places, 228 transitions, 598 flow [2022-11-16 12:42:26,548 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=577, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=215, PETRI_TRANSITIONS=228} [2022-11-16 12:42:26,549 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 15 predicate places. [2022-11-16 12:42:26,550 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 228 transitions, 598 flow [2022-11-16 12:42:26,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.5) internal successors, (834), 4 states have internal predecessors, (834), 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 12:42:26,551 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:26,551 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:26,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:42:26,552 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:26,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:26,552 INFO L85 PathProgramCache]: Analyzing trace with hash -965845556, now seen corresponding path program 1 times [2022-11-16 12:42:26,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:26,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515626913] [2022-11-16 12:42:26,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:26,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:26,688 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 12:42:26,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:26,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515626913] [2022-11-16 12:42:26,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515626913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:26,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:26,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254826471] [2022-11-16 12:42:26,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:26,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:26,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:26,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:26,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:26,694 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:26,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 228 transitions, 598 flow. Second operand has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 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 12:42:26,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:26,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:26,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:27,294 INFO L130 PetriNetUnfolder]: 259/2574 cut-off events. [2022-11-16 12:42:27,294 INFO L131 PetriNetUnfolder]: For 104/110 co-relation queries the response was YES. [2022-11-16 12:42:27,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3507 conditions, 2574 events. 259/2574 cut-off events. For 104/110 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 21222 event pairs, 36 based on Foata normal form. 0/2322 useless extension candidates. Maximal degree in co-relation 2995. Up to 283 conditions per place. [2022-11-16 12:42:27,326 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 30 selfloop transitions, 4 changer transitions 0/244 dead transitions. [2022-11-16 12:42:27,326 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 244 transitions, 703 flow [2022-11-16 12:42:27,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:27,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:27,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1041 transitions. [2022-11-16 12:42:27,331 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9012987012987013 [2022-11-16 12:42:27,331 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1041 transitions. [2022-11-16 12:42:27,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1041 transitions. [2022-11-16 12:42:27,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:27,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1041 transitions. [2022-11-16 12:42:27,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.2) internal successors, (1041), 5 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 12:42:27,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:27,339 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:27,339 INFO L175 Difference]: Start difference. First operand has 215 places, 228 transitions, 598 flow. Second operand 5 states and 1041 transitions. [2022-11-16 12:42:27,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 244 transitions, 703 flow [2022-11-16 12:42:27,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 244 transitions, 702 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:42:27,347 INFO L231 Difference]: Finished difference. Result has 221 places, 231 transitions, 627 flow [2022-11-16 12:42:27,348 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=597, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=627, PETRI_PLACES=221, PETRI_TRANSITIONS=231} [2022-11-16 12:42:27,351 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 21 predicate places. [2022-11-16 12:42:27,352 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 231 transitions, 627 flow [2022-11-16 12:42:27,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.25) internal successors, (813), 4 states have internal predecessors, (813), 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 12:42:27,353 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:27,353 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:27,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:42:27,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:27,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash -172762832, now seen corresponding path program 1 times [2022-11-16 12:42:27,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:27,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891913749] [2022-11-16 12:42:27,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:27,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:27,487 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 12:42:27,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:27,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891913749] [2022-11-16 12:42:27,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891913749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:27,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:27,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:27,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431998167] [2022-11-16 12:42:27,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:27,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:27,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:27,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:27,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:27,492 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 231 [2022-11-16 12:42:27,494 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 231 transitions, 627 flow. Second operand has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 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 12:42:27,494 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:27,494 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 231 [2022-11-16 12:42:27,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:28,169 INFO L130 PetriNetUnfolder]: 349/2820 cut-off events. [2022-11-16 12:42:28,169 INFO L131 PetriNetUnfolder]: For 374/398 co-relation queries the response was YES. [2022-11-16 12:42:28,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3792 conditions, 2820 events. 349/2820 cut-off events. For 374/398 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 27398 event pairs, 144 based on Foata normal form. 0/2412 useless extension candidates. Maximal degree in co-relation 2287. Up to 415 conditions per place. [2022-11-16 12:42:28,194 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 17 selfloop transitions, 3 changer transitions 0/239 dead transitions. [2022-11-16 12:42:28,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 239 transitions, 687 flow [2022-11-16 12:42:28,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:28,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:28,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1056 transitions. [2022-11-16 12:42:28,198 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9142857142857143 [2022-11-16 12:42:28,199 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1056 transitions. [2022-11-16 12:42:28,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1056 transitions. [2022-11-16 12:42:28,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:28,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1056 transitions. [2022-11-16 12:42:28,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 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 12:42:28,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:28,218 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:28,228 INFO L175 Difference]: Start difference. First operand has 221 places, 231 transitions, 627 flow. Second operand 5 states and 1056 transitions. [2022-11-16 12:42:28,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 239 transitions, 687 flow [2022-11-16 12:42:28,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 239 transitions, 685 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:42:28,235 INFO L231 Difference]: Finished difference. Result has 227 places, 233 transitions, 646 flow [2022-11-16 12:42:28,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=625, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=646, PETRI_PLACES=227, PETRI_TRANSITIONS=233} [2022-11-16 12:42:28,239 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 27 predicate places. [2022-11-16 12:42:28,239 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 233 transitions, 646 flow [2022-11-16 12:42:28,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 208.75) internal successors, (835), 4 states have internal predecessors, (835), 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 12:42:28,241 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:28,241 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:28,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:42:28,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:28,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:28,242 INFO L85 PathProgramCache]: Analyzing trace with hash -512894034, now seen corresponding path program 1 times [2022-11-16 12:42:28,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:28,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540216172] [2022-11-16 12:42:28,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:28,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:28,366 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 12:42:28,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:28,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540216172] [2022-11-16 12:42:28,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540216172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:28,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:28,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:28,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360067780] [2022-11-16 12:42:28,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:28,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:28,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:28,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:28,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 233 transitions, 646 flow. Second operand has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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 12:42:28,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:28,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:28,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:29,588 INFO L130 PetriNetUnfolder]: 691/4476 cut-off events. [2022-11-16 12:42:29,588 INFO L131 PetriNetUnfolder]: For 848/872 co-relation queries the response was YES. [2022-11-16 12:42:29,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6675 conditions, 4476 events. 691/4476 cut-off events. For 848/872 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 50134 event pairs, 312 based on Foata normal form. 0/3744 useless extension candidates. Maximal degree in co-relation 5413. Up to 817 conditions per place. [2022-11-16 12:42:29,634 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 29 selfloop transitions, 4 changer transitions 0/248 dead transitions. [2022-11-16 12:42:29,634 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 248 transitions, 746 flow [2022-11-16 12:42:29,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:29,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:29,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1040 transitions. [2022-11-16 12:42:29,637 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9004329004329005 [2022-11-16 12:42:29,638 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1040 transitions. [2022-11-16 12:42:29,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1040 transitions. [2022-11-16 12:42:29,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:29,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1040 transitions. [2022-11-16 12:42:29,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 12:42:29,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:29,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:29,645 INFO L175 Difference]: Start difference. First operand has 227 places, 233 transitions, 646 flow. Second operand 5 states and 1040 transitions. [2022-11-16 12:42:29,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 248 transitions, 746 flow [2022-11-16 12:42:29,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 248 transitions, 745 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:42:29,657 INFO L231 Difference]: Finished difference. Result has 233 places, 236 transitions, 675 flow [2022-11-16 12:42:29,658 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=645, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=675, PETRI_PLACES=233, PETRI_TRANSITIONS=236} [2022-11-16 12:42:29,659 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 33 predicate places. [2022-11-16 12:42:29,659 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 236 transitions, 675 flow [2022-11-16 12:42:29,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 203.5) internal successors, (814), 4 states have internal predecessors, (814), 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 12:42:29,659 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:29,660 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:29,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:42:29,660 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:29,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:29,661 INFO L85 PathProgramCache]: Analyzing trace with hash 570138401, now seen corresponding path program 1 times [2022-11-16 12:42:29,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:29,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125907458] [2022-11-16 12:42:29,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:29,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:29,849 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 12:42:29,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:29,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125907458] [2022-11-16 12:42:29,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125907458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:29,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:29,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 12:42:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007764075] [2022-11-16 12:42:29,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:29,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 12:42:29,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:29,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 12:42:29,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 12:42:29,860 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 231 [2022-11-16 12:42:29,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 236 transitions, 675 flow. Second operand has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 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 12:42:29,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:29,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 231 [2022-11-16 12:42:29,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:30,549 INFO L130 PetriNetUnfolder]: 127/2460 cut-off events. [2022-11-16 12:42:30,549 INFO L131 PetriNetUnfolder]: For 326/374 co-relation queries the response was YES. [2022-11-16 12:42:30,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3625 conditions, 2460 events. 127/2460 cut-off events. For 326/374 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 21667 event pairs, 0 based on Foata normal form. 48/2196 useless extension candidates. Maximal degree in co-relation 2402. Up to 601 conditions per place. [2022-11-16 12:42:30,589 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 8 selfloop transitions, 2 changer transitions 2/239 dead transitions. [2022-11-16 12:42:30,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 239 transitions, 707 flow [2022-11-16 12:42:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 12:42:30,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 12:42:30,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 638 transitions. [2022-11-16 12:42:30,594 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9206349206349206 [2022-11-16 12:42:30,594 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 638 transitions. [2022-11-16 12:42:30,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 638 transitions. [2022-11-16 12:42:30,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:30,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 638 transitions. [2022-11-16 12:42:30,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 212.66666666666666) internal successors, (638), 3 states have internal predecessors, (638), 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 12:42:30,599 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 12:42:30,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 231.0) internal successors, (924), 4 states have internal predecessors, (924), 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 12:42:30,600 INFO L175 Difference]: Start difference. First operand has 233 places, 236 transitions, 675 flow. Second operand 3 states and 638 transitions. [2022-11-16 12:42:30,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 239 transitions, 707 flow [2022-11-16 12:42:30,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 239 transitions, 705 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 12:42:30,608 INFO L231 Difference]: Finished difference. Result has 235 places, 236 transitions, 683 flow [2022-11-16 12:42:30,609 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=673, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=683, PETRI_PLACES=235, PETRI_TRANSITIONS=236} [2022-11-16 12:42:30,610 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 35 predicate places. [2022-11-16 12:42:30,610 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 236 transitions, 683 flow [2022-11-16 12:42:30,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 210.0) internal successors, (630), 3 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 12:42:30,611 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:30,611 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 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 12:42:30,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:42:30,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:30,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:30,613 INFO L85 PathProgramCache]: Analyzing trace with hash -109158499, now seen corresponding path program 1 times [2022-11-16 12:42:30,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:30,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129550180] [2022-11-16 12:42:30,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:30,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 12:42:30,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:30,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129550180] [2022-11-16 12:42:30,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129550180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:30,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:30,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:30,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442175517] [2022-11-16 12:42:30,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:30,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:30,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:30,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:30,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:30,728 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:30,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 236 transitions, 683 flow. Second operand has 4 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 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 12:42:30,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:30,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:30,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:32,084 INFO L130 PetriNetUnfolder]: 193/4458 cut-off events. [2022-11-16 12:42:32,085 INFO L131 PetriNetUnfolder]: For 405/1977 co-relation queries the response was YES. [2022-11-16 12:42:32,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6740 conditions, 4458 events. 193/4458 cut-off events. For 405/1977 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 46843 event pairs, 66 based on Foata normal form. 84/4290 useless extension candidates. Maximal degree in co-relation 5270. Up to 384 conditions per place. [2022-11-16 12:42:32,130 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 19 selfloop transitions, 8 changer transitions 0/242 dead transitions. [2022-11-16 12:42:32,131 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 242 transitions, 752 flow [2022-11-16 12:42:32,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1030 transitions. [2022-11-16 12:42:32,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8917748917748918 [2022-11-16 12:42:32,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1030 transitions. [2022-11-16 12:42:32,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1030 transitions. [2022-11-16 12:42:32,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:32,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1030 transitions. [2022-11-16 12:42:32,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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 12:42:32,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:32,142 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:32,142 INFO L175 Difference]: Start difference. First operand has 235 places, 236 transitions, 683 flow. Second operand 5 states and 1030 transitions. [2022-11-16 12:42:32,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 242 transitions, 752 flow [2022-11-16 12:42:32,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 242 transitions, 748 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:42:32,160 INFO L231 Difference]: Finished difference. Result has 237 places, 236 transitions, 699 flow [2022-11-16 12:42:32,160 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=699, PETRI_PLACES=237, PETRI_TRANSITIONS=236} [2022-11-16 12:42:32,161 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 37 predicate places. [2022-11-16 12:42:32,161 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 236 transitions, 699 flow [2022-11-16 12:42:32,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 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 12:42:32,162 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:32,163 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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] [2022-11-16 12:42:32,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 12:42:32,163 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:32,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:32,164 INFO L85 PathProgramCache]: Analyzing trace with hash 911054433, now seen corresponding path program 1 times [2022-11-16 12:42:32,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:32,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023708606] [2022-11-16 12:42:32,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:32,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:32,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:32,292 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-16 12:42:32,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:32,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023708606] [2022-11-16 12:42:32,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023708606] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:32,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:32,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:42:32,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781361346] [2022-11-16 12:42:32,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:32,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:42:32,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:32,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:42:32,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:32,296 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 231 [2022-11-16 12:42:32,298 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 236 transitions, 699 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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 12:42:32,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:32,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 231 [2022-11-16 12:42:32,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:32,873 INFO L130 PetriNetUnfolder]: 21/1905 cut-off events. [2022-11-16 12:42:32,874 INFO L131 PetriNetUnfolder]: For 302/447 co-relation queries the response was YES. [2022-11-16 12:42:32,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 1905 events. 21/1905 cut-off events. For 302/447 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 16319 event pairs, 0 based on Foata normal form. 2/1767 useless extension candidates. Maximal degree in co-relation 1986. Up to 244 conditions per place. [2022-11-16 12:42:32,913 INFO L137 encePairwiseOnDemand]: 221/231 looper letters, 42 selfloop transitions, 12 changer transitions 0/239 dead transitions. [2022-11-16 12:42:32,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 239 transitions, 814 flow [2022-11-16 12:42:32,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:32,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:32,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 993 transitions. [2022-11-16 12:42:32,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8597402597402597 [2022-11-16 12:42:32,917 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 993 transitions. [2022-11-16 12:42:32,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 993 transitions. [2022-11-16 12:42:32,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:32,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 993 transitions. [2022-11-16 12:42:32,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 198.6) internal successors, (993), 5 states have internal predecessors, (993), 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 12:42:32,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:32,925 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:32,925 INFO L175 Difference]: Start difference. First operand has 237 places, 236 transitions, 699 flow. Second operand 5 states and 993 transitions. [2022-11-16 12:42:32,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 239 transitions, 814 flow [2022-11-16 12:42:32,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 239 transitions, 802 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:42:32,934 INFO L231 Difference]: Finished difference. Result has 239 places, 235 transitions, 714 flow [2022-11-16 12:42:32,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=239, PETRI_TRANSITIONS=235} [2022-11-16 12:42:32,936 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 39 predicate places. [2022-11-16 12:42:32,936 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 235 transitions, 714 flow [2022-11-16 12:42:32,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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 12:42:32,937 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:32,937 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:32,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:42:32,938 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:32,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:32,939 INFO L85 PathProgramCache]: Analyzing trace with hash -281643708, now seen corresponding path program 1 times [2022-11-16 12:42:32,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:32,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328646218] [2022-11-16 12:42:32,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:32,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:32,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:42:33,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:33,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328646218] [2022-11-16 12:42:33,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328646218] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:33,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590080726] [2022-11-16 12:42:33,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:33,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:33,186 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:33,189 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:33,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 12:42:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:33,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-16 12:42:33,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:42:33,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:33,674 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-16 12:42:33,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590080726] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:33,674 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:33,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-16 12:42:33,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365745364] [2022-11-16 12:42:33,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:33,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 12:42:33,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:33,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 12:42:33,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:42:33,681 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-11-16 12:42:33,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 235 transitions, 714 flow. Second operand has 15 states, 15 states have (on average 184.66666666666666) internal successors, (2770), 15 states have internal predecessors, (2770), 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 12:42:33,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:33,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-11-16 12:42:33,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:34,308 INFO L130 PetriNetUnfolder]: 13/1203 cut-off events. [2022-11-16 12:42:34,308 INFO L131 PetriNetUnfolder]: For 176/263 co-relation queries the response was YES. [2022-11-16 12:42:34,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1830 conditions, 1203 events. 13/1203 cut-off events. For 176/263 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 8362 event pairs, 0 based on Foata normal form. 4/1123 useless extension candidates. Maximal degree in co-relation 1548. Up to 140 conditions per place. [2022-11-16 12:42:34,325 INFO L137 encePairwiseOnDemand]: 215/231 looper letters, 52 selfloop transitions, 30 changer transitions 0/251 dead transitions. [2022-11-16 12:42:34,325 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 251 transitions, 920 flow [2022-11-16 12:42:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:42:34,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 12:42:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2059 transitions. [2022-11-16 12:42:34,332 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8103109012199922 [2022-11-16 12:42:34,332 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2059 transitions. [2022-11-16 12:42:34,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2059 transitions. [2022-11-16 12:42:34,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:34,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2059 transitions. [2022-11-16 12:42:34,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 187.1818181818182) internal successors, (2059), 11 states have internal predecessors, (2059), 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 12:42:34,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 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 12:42:34,346 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 231.0) internal successors, (2772), 12 states have internal predecessors, (2772), 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 12:42:34,346 INFO L175 Difference]: Start difference. First operand has 239 places, 235 transitions, 714 flow. Second operand 11 states and 2059 transitions. [2022-11-16 12:42:34,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 251 transitions, 920 flow [2022-11-16 12:42:34,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 251 transitions, 900 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-16 12:42:34,355 INFO L231 Difference]: Finished difference. Result has 248 places, 235 transitions, 793 flow [2022-11-16 12:42:34,356 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=793, PETRI_PLACES=248, PETRI_TRANSITIONS=235} [2022-11-16 12:42:34,358 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 48 predicate places. [2022-11-16 12:42:34,358 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 235 transitions, 793 flow [2022-11-16 12:42:34,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 184.66666666666666) internal successors, (2770), 15 states have internal predecessors, (2770), 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 12:42:34,360 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:34,361 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2022-11-16 12:42:34,373 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:34,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:34,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:34,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:34,568 INFO L85 PathProgramCache]: Analyzing trace with hash -135731996, now seen corresponding path program 2 times [2022-11-16 12:42:34,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:34,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731126135] [2022-11-16 12:42:34,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:34,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:34,951 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-16 12:42:34,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:34,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731126135] [2022-11-16 12:42:34,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731126135] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:34,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999324372] [2022-11-16 12:42:34,952 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-16 12:42:34,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:34,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:34,954 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:34,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 12:42:35,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-16 12:42:35,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 12:42:35,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-16 12:42:35,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:42:35,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:35,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999324372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:35,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:35,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 14 [2022-11-16 12:42:35,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294439126] [2022-11-16 12:42:35,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:35,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:42:35,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:35,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:42:35,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:42:35,228 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:35,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 235 transitions, 793 flow. Second operand has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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 12:42:35,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:35,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:35,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:35,683 INFO L130 PetriNetUnfolder]: 85/1515 cut-off events. [2022-11-16 12:42:35,683 INFO L131 PetriNetUnfolder]: For 265/847 co-relation queries the response was YES. [2022-11-16 12:42:35,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2465 conditions, 1515 events. 85/1515 cut-off events. For 265/847 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 11456 event pairs, 0 based on Foata normal form. 36/1458 useless extension candidates. Maximal degree in co-relation 1962. Up to 237 conditions per place. [2022-11-16 12:42:35,703 INFO L137 encePairwiseOnDemand]: 227/231 looper letters, 17 selfloop transitions, 5 changer transitions 0/236 dead transitions. [2022-11-16 12:42:35,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 236 transitions, 839 flow [2022-11-16 12:42:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 12:42:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-16 12:42:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 823 transitions. [2022-11-16 12:42:35,706 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8906926406926406 [2022-11-16 12:42:35,706 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 823 transitions. [2022-11-16 12:42:35,706 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 823 transitions. [2022-11-16 12:42:35,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:35,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 823 transitions. [2022-11-16 12:42:35,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 205.75) internal successors, (823), 4 states have internal predecessors, (823), 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 12:42:35,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 12:42:35,712 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 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 12:42:35,712 INFO L175 Difference]: Start difference. First operand has 248 places, 235 transitions, 793 flow. Second operand 4 states and 823 transitions. [2022-11-16 12:42:35,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 236 transitions, 839 flow [2022-11-16 12:42:35,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 236 transitions, 792 flow, removed 2 selfloop flow, removed 9 redundant places. [2022-11-16 12:42:35,721 INFO L231 Difference]: Finished difference. Result has 241 places, 234 transitions, 752 flow [2022-11-16 12:42:35,721 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=742, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=752, PETRI_PLACES=241, PETRI_TRANSITIONS=234} [2022-11-16 12:42:35,723 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 41 predicate places. [2022-11-16 12:42:35,723 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 234 transitions, 752 flow [2022-11-16 12:42:35,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 205.0) internal successors, (1025), 5 states have internal predecessors, (1025), 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 12:42:35,724 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:35,724 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:35,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:35,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:35,932 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 254731643, now seen corresponding path program 1 times [2022-11-16 12:42:35,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:35,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490181399] [2022-11-16 12:42:35,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:35,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-16 12:42:36,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:36,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490181399] [2022-11-16 12:42:36,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490181399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:36,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:36,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:36,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042719019] [2022-11-16 12:42:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:42:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:36,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:42:36,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:36,132 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:36,133 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 234 transitions, 752 flow. Second operand has 5 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 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 12:42:36,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:36,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:36,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:37,044 INFO L130 PetriNetUnfolder]: 373/2775 cut-off events. [2022-11-16 12:42:37,045 INFO L131 PetriNetUnfolder]: For 860/875 co-relation queries the response was YES. [2022-11-16 12:42:37,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4650 conditions, 2775 events. 373/2775 cut-off events. For 860/875 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28135 event pairs, 15 based on Foata normal form. 60/2493 useless extension candidates. Maximal degree in co-relation 2704. Up to 672 conditions per place. [2022-11-16 12:42:37,069 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 15 selfloop transitions, 9 changer transitions 2/242 dead transitions. [2022-11-16 12:42:37,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 242 transitions, 830 flow [2022-11-16 12:42:37,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:42:37,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:42:37,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1230 transitions. [2022-11-16 12:42:37,074 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8874458874458875 [2022-11-16 12:42:37,074 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1230 transitions. [2022-11-16 12:42:37,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1230 transitions. [2022-11-16 12:42:37,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:37,076 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1230 transitions. [2022-11-16 12:42:37,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.0) internal successors, (1230), 6 states have internal predecessors, (1230), 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 12:42:37,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 12:42:37,085 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 12:42:37,086 INFO L175 Difference]: Start difference. First operand has 241 places, 234 transitions, 752 flow. Second operand 6 states and 1230 transitions. [2022-11-16 12:42:37,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 242 transitions, 830 flow [2022-11-16 12:42:37,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 242 transitions, 820 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:42:37,101 INFO L231 Difference]: Finished difference. Result has 243 places, 237 transitions, 780 flow [2022-11-16 12:42:37,102 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=780, PETRI_PLACES=243, PETRI_TRANSITIONS=237} [2022-11-16 12:42:37,103 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 43 predicate places. [2022-11-16 12:42:37,103 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 237 transitions, 780 flow [2022-11-16 12:42:37,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.4) internal successors, (1017), 5 states have internal predecessors, (1017), 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 12:42:37,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:37,105 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:37,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 12:42:37,106 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:37,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:37,107 INFO L85 PathProgramCache]: Analyzing trace with hash -660963809, now seen corresponding path program 1 times [2022-11-16 12:42:37,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:37,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787525589] [2022-11-16 12:42:37,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:37,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:37,273 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-16 12:42:37,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:37,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787525589] [2022-11-16 12:42:37,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787525589] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:37,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:37,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 12:42:37,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888576079] [2022-11-16 12:42:37,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:37,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:42:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:42:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 12:42:37,278 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:37,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 237 transitions, 780 flow. Second operand has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 12:42:37,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:37,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:37,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:38,185 INFO L130 PetriNetUnfolder]: 373/2688 cut-off events. [2022-11-16 12:42:38,186 INFO L131 PetriNetUnfolder]: For 899/914 co-relation queries the response was YES. [2022-11-16 12:42:38,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4666 conditions, 2688 events. 373/2688 cut-off events. For 899/914 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 26625 event pairs, 165 based on Foata normal form. 18/2373 useless extension candidates. Maximal degree in co-relation 2608. Up to 471 conditions per place. [2022-11-16 12:42:38,214 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 17 selfloop transitions, 8 changer transitions 1/242 dead transitions. [2022-11-16 12:42:38,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 242 transitions, 844 flow [2022-11-16 12:42:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:42:38,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-16 12:42:38,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2022-11-16 12:42:38,219 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8909090909090909 [2022-11-16 12:42:38,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2022-11-16 12:42:38,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2022-11-16 12:42:38,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:38,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2022-11-16 12:42:38,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 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 12:42:38,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:38,226 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 231.0) internal successors, (1386), 6 states have internal predecessors, (1386), 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 12:42:38,226 INFO L175 Difference]: Start difference. First operand has 243 places, 237 transitions, 780 flow. Second operand 5 states and 1029 transitions. [2022-11-16 12:42:38,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 242 transitions, 844 flow [2022-11-16 12:42:38,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 242 transitions, 837 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-11-16 12:42:38,237 INFO L231 Difference]: Finished difference. Result has 245 places, 237 transitions, 793 flow [2022-11-16 12:42:38,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=793, PETRI_PLACES=245, PETRI_TRANSITIONS=237} [2022-11-16 12:42:38,239 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 45 predicate places. [2022-11-16 12:42:38,239 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 237 transitions, 793 flow [2022-11-16 12:42:38,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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 12:42:38,240 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:38,240 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:38,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:42:38,241 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 428651630, now seen corresponding path program 1 times [2022-11-16 12:42:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:38,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932207213] [2022-11-16 12:42:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:38,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:38,619 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:42:38,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932207213] [2022-11-16 12:42:38,620 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932207213] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:38,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734505483] [2022-11-16 12:42:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:38,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:38,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:38,625 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:38,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 12:42:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:38,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 12:42:38,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:39,084 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:42:39,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:42:39,279 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-16 12:42:39,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734505483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:42:39,280 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:42:39,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-16 12:42:39,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607589104] [2022-11-16 12:42:39,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:42:39,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 12:42:39,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:39,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 12:42:39,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:42:39,287 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 231 [2022-11-16 12:42:39,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 237 transitions, 793 flow. Second operand has 22 states, 22 states have (on average 184.9090909090909) internal successors, (4068), 22 states have internal predecessors, (4068), 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 12:42:39,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:39,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 231 [2022-11-16 12:42:39,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:39,894 INFO L130 PetriNetUnfolder]: 5/479 cut-off events. [2022-11-16 12:42:39,894 INFO L131 PetriNetUnfolder]: For 129/158 co-relation queries the response was YES. [2022-11-16 12:42:39,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 479 events. 5/479 cut-off events. For 129/158 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1648 event pairs, 0 based on Foata normal form. 4/457 useless extension candidates. Maximal degree in co-relation 661. Up to 52 conditions per place. [2022-11-16 12:42:39,899 INFO L137 encePairwiseOnDemand]: 215/231 looper letters, 58 selfloop transitions, 34 changer transitions 0/263 dead transitions. [2022-11-16 12:42:39,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 263 transitions, 1051 flow [2022-11-16 12:42:39,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 12:42:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-16 12:42:39,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3173 transitions. [2022-11-16 12:42:39,906 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8079959256429845 [2022-11-16 12:42:39,906 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3173 transitions. [2022-11-16 12:42:39,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3173 transitions. [2022-11-16 12:42:39,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:39,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3173 transitions. [2022-11-16 12:42:39,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 186.64705882352942) internal successors, (3173), 17 states have internal predecessors, (3173), 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 12:42:39,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 231.0) internal successors, (4158), 18 states have internal predecessors, (4158), 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 12:42:39,924 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 231.0) internal successors, (4158), 18 states have internal predecessors, (4158), 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 12:42:39,925 INFO L175 Difference]: Start difference. First operand has 245 places, 237 transitions, 793 flow. Second operand 17 states and 3173 transitions. [2022-11-16 12:42:39,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 263 transitions, 1051 flow [2022-11-16 12:42:39,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 263 transitions, 1039 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:42:39,933 INFO L231 Difference]: Finished difference. Result has 260 places, 235 transitions, 855 flow [2022-11-16 12:42:39,934 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=855, PETRI_PLACES=260, PETRI_TRANSITIONS=235} [2022-11-16 12:42:39,935 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 60 predicate places. [2022-11-16 12:42:39,936 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 235 transitions, 855 flow [2022-11-16 12:42:39,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 184.9090909090909) internal successors, (4068), 22 states have internal predecessors, (4068), 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 12:42:39,938 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:39,938 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:39,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:40,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 12:42:40,145 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:40,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 954624238, now seen corresponding path program 2 times [2022-11-16 12:42:40,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:40,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987609468] [2022-11-16 12:42:40,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:40,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:40,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:40,365 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:42:40,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:40,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987609468] [2022-11-16 12:42:40,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987609468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:40,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:40,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:40,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254844204] [2022-11-16 12:42:40,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:40,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:42:40,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:40,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:42:40,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:40,370 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:40,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 235 transitions, 855 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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 12:42:40,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:40,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:40,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:40,710 INFO L130 PetriNetUnfolder]: 125/1009 cut-off events. [2022-11-16 12:42:40,710 INFO L131 PetriNetUnfolder]: For 426/431 co-relation queries the response was YES. [2022-11-16 12:42:40,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1814 conditions, 1009 events. 125/1009 cut-off events. For 426/431 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7138 event pairs, 65 based on Foata normal form. 10/920 useless extension candidates. Maximal degree in co-relation 1491. Up to 202 conditions per place. [2022-11-16 12:42:40,719 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 17 selfloop transitions, 6 changer transitions 6/243 dead transitions. [2022-11-16 12:42:40,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 243 transitions, 935 flow [2022-11-16 12:42:40,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:42:40,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:42:40,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1232 transitions. [2022-11-16 12:42:40,723 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-11-16 12:42:40,724 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1232 transitions. [2022-11-16 12:42:40,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1232 transitions. [2022-11-16 12:42:40,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:40,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1232 transitions. [2022-11-16 12:42:40,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 205.33333333333334) internal successors, (1232), 6 states have internal predecessors, (1232), 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 12:42:40,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 12:42:40,734 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 12:42:40,735 INFO L175 Difference]: Start difference. First operand has 260 places, 235 transitions, 855 flow. Second operand 6 states and 1232 transitions. [2022-11-16 12:42:40,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 243 transitions, 935 flow [2022-11-16 12:42:40,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 243 transitions, 867 flow, removed 0 selfloop flow, removed 16 redundant places. [2022-11-16 12:42:40,744 INFO L231 Difference]: Finished difference. Result has 251 places, 236 transitions, 809 flow [2022-11-16 12:42:40,745 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=787, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=809, PETRI_PLACES=251, PETRI_TRANSITIONS=236} [2022-11-16 12:42:40,745 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 51 predicate places. [2022-11-16 12:42:40,745 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 236 transitions, 809 flow [2022-11-16 12:42:40,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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 12:42:40,746 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:40,747 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-16 12:42:40,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 12:42:40,747 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:40,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1287657446, now seen corresponding path program 1 times [2022-11-16 12:42:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:40,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187041043] [2022-11-16 12:42:40,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:40,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:41,003 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:42:41,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:41,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187041043] [2022-11-16 12:42:41,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187041043] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:42:41,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289890450] [2022-11-16 12:42:41,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:41,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:42:41,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:42:41,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:42:41,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 12:42:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:41,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:42:41,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:42:41,311 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:42:41,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:42:41,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289890450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:41,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:42:41,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-11-16 12:42:41,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632594477] [2022-11-16 12:42:41,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:41,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:42:41,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:41,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:42:41,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:42:41,315 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:41,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 236 transitions, 809 flow. Second operand has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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 12:42:41,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:41,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:41,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:41,665 INFO L130 PetriNetUnfolder]: 120/975 cut-off events. [2022-11-16 12:42:41,665 INFO L131 PetriNetUnfolder]: For 434/439 co-relation queries the response was YES. [2022-11-16 12:42:41,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 975 events. 120/975 cut-off events. For 434/439 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6740 event pairs, 30 based on Foata normal form. 6/888 useless extension candidates. Maximal degree in co-relation 1617. Up to 115 conditions per place. [2022-11-16 12:42:41,672 INFO L137 encePairwiseOnDemand]: 226/231 looper letters, 27 selfloop transitions, 6 changer transitions 0/248 dead transitions. [2022-11-16 12:42:41,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 248 transitions, 903 flow [2022-11-16 12:42:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:42:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-16 12:42:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1441 transitions. [2022-11-16 12:42:41,676 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.891156462585034 [2022-11-16 12:42:41,676 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1441 transitions. [2022-11-16 12:42:41,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1441 transitions. [2022-11-16 12:42:41,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:41,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1441 transitions. [2022-11-16 12:42:41,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 205.85714285714286) internal successors, (1441), 7 states have internal predecessors, (1441), 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 12:42:41,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 12:42:41,685 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 231.0) internal successors, (1848), 8 states have internal predecessors, (1848), 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 12:42:41,686 INFO L175 Difference]: Start difference. First operand has 251 places, 236 transitions, 809 flow. Second operand 7 states and 1441 transitions. [2022-11-16 12:42:41,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 248 transitions, 903 flow [2022-11-16 12:42:41,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 248 transitions, 894 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-16 12:42:41,696 INFO L231 Difference]: Finished difference. Result has 253 places, 235 transitions, 808 flow [2022-11-16 12:42:41,697 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=808, PETRI_PLACES=253, PETRI_TRANSITIONS=235} [2022-11-16 12:42:41,697 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 53 predicate places. [2022-11-16 12:42:41,697 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 235 transitions, 808 flow [2022-11-16 12:42:41,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 204.5) internal successors, (1227), 6 states have internal predecessors, (1227), 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 12:42:41,698 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 12:42:41,699 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:42:41,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 12:42:41,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-16 12:42:41,909 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2022-11-16 12:42:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:42:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1542086000, now seen corresponding path program 1 times [2022-11-16 12:42:41,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:42:41,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828458807] [2022-11-16 12:42:41,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:42:41,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:42:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:42:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-11-16 12:42:42,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:42:42,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828458807] [2022-11-16 12:42:42,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828458807] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:42:42,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:42:42,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 12:42:42,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99753622] [2022-11-16 12:42:42,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:42:42,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:42:42,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:42:42,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:42:42,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:42:42,275 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 231 [2022-11-16 12:42:42,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 235 transitions, 808 flow. Second operand has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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 12:42:42,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 12:42:42,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 231 [2022-11-16 12:42:42,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 12:42:42,568 INFO L130 PetriNetUnfolder]: 125/993 cut-off events. [2022-11-16 12:42:42,569 INFO L131 PetriNetUnfolder]: For 487/492 co-relation queries the response was YES. [2022-11-16 12:42:42,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 993 events. 125/993 cut-off events. For 487/492 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 7097 event pairs, 5 based on Foata normal form. 10/901 useless extension candidates. Maximal degree in co-relation 1636. Up to 204 conditions per place. [2022-11-16 12:42:42,573 INFO L137 encePairwiseOnDemand]: 225/231 looper letters, 0 selfloop transitions, 0 changer transitions 239/239 dead transitions. [2022-11-16 12:42:42,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 239 transitions, 868 flow [2022-11-16 12:42:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-16 12:42:42,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-16 12:42:42,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1229 transitions. [2022-11-16 12:42:42,576 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8867243867243867 [2022-11-16 12:42:42,577 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1229 transitions. [2022-11-16 12:42:42,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1229 transitions. [2022-11-16 12:42:42,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 12:42:42,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1229 transitions. [2022-11-16 12:42:42,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 204.83333333333334) internal successors, (1229), 6 states have internal predecessors, (1229), 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 12:42:42,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 12:42:42,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 231.0) internal successors, (1617), 7 states have internal predecessors, (1617), 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 12:42:42,584 INFO L175 Difference]: Start difference. First operand has 253 places, 235 transitions, 808 flow. Second operand 6 states and 1229 transitions. [2022-11-16 12:42:42,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 239 transitions, 868 flow [2022-11-16 12:42:42,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 239 transitions, 849 flow, removed 2 selfloop flow, removed 8 redundant places. [2022-11-16 12:42:42,593 INFO L231 Difference]: Finished difference. Result has 249 places, 0 transitions, 0 flow [2022-11-16 12:42:42,594 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=231, PETRI_DIFFERENCE_MINUEND_FLOW=783, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=249, PETRI_TRANSITIONS=0} [2022-11-16 12:42:42,594 INFO L288 CegarLoopForPetriNet]: 200 programPoint places, 49 predicate places. [2022-11-16 12:42:42,595 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 0 transitions, 0 flow [2022-11-16 12:42:42,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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 12:42:42,598 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2022-11-16 12:42:42,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2022-11-16 12:42:42,599 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2022-11-16 12:42:42,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2022-11-16 12:42:42,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2022-11-16 12:42:42,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2022-11-16 12:42:42,600 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2022-11-16 12:42:42,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2022-11-16 12:42:42,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2022-11-16 12:42:42,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2022-11-16 12:42:42,601 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 16 remaining) [2022-11-16 12:42:42,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 16 remaining) [2022-11-16 12:42:42,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2022-11-16 12:42:42,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2022-11-16 12:42:42,602 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2022-11-16 12:42:42,603 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2022-11-16 12:42:42,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:42:42,603 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:42:42,611 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-16 12:42:42,611 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 12:42:42,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 12:42:42 BasicIcfg [2022-11-16 12:42:42,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 12:42:42,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:42:42,619 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:42:42,619 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:42:42,620 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:42:19" (3/4) ... [2022-11-16 12:42:42,623 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-16 12:42:42,631 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-16 12:42:42,631 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-16 12:42:42,637 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 24 nodes and edges [2022-11-16 12:42:42,638 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-16 12:42:42,638 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-16 12:42:42,638 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-16 12:42:42,688 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:42:42,688 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:42:42,689 INFO L158 Benchmark]: Toolchain (without parser) took 24660.90ms. Allocated memory was 125.8MB in the beginning and 725.6MB in the end (delta: 599.8MB). Free memory was 88.7MB in the beginning and 554.9MB in the end (delta: -466.2MB). Peak memory consumption was 132.0MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,689 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:42:42,690 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.10ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 100.7MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,690 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.53ms. Allocated memory is still 125.8MB. Free memory was 100.7MB in the beginning and 98.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,691 INFO L158 Benchmark]: Boogie Preprocessor took 64.72ms. Allocated memory is still 125.8MB. Free memory was 98.6MB in the beginning and 96.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,692 INFO L158 Benchmark]: RCFGBuilder took 872.30ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 77.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,692 INFO L158 Benchmark]: TraceAbstraction took 23068.90ms. Allocated memory was 125.8MB in the beginning and 725.6MB in the end (delta: 599.8MB). Free memory was 76.9MB in the beginning and 558.1MB in the end (delta: -481.1MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,693 INFO L158 Benchmark]: Witness Printer took 70.12ms. Allocated memory is still 725.6MB. Free memory was 558.1MB in the beginning and 554.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:42:42,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 125.8MB. Free memory is still 106.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.10ms. Allocated memory is still 125.8MB. Free memory was 88.5MB in the beginning and 100.7MB in the end (delta: -12.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.53ms. Allocated memory is still 125.8MB. Free memory was 100.7MB in the beginning and 98.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.72ms. Allocated memory is still 125.8MB. Free memory was 98.6MB in the beginning and 96.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 872.30ms. Allocated memory is still 125.8MB. Free memory was 96.8MB in the beginning and 77.6MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 23068.90ms. Allocated memory was 125.8MB in the beginning and 725.6MB in the end (delta: 599.8MB). Free memory was 76.9MB in the beginning and 558.1MB in the end (delta: -481.1MB). Peak memory consumption was 120.1MB. Max. memory is 16.1GB. * Witness Printer took 70.12ms. Allocated memory is still 725.6MB. Free memory was 558.1MB in the beginning and 554.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 72]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 92]: 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 5 procedures, 285 locations, 16 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: 22.8s, OverallIterations: 19, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1593 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1593 mSDsluCounter, 288 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 176 mSDsCounter, 152 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1401 IncrementalHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 152 mSolverCounterUnsat, 112 mSDtfsCounter, 1401 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1575 GetRequests, 1387 SyntacticMatches, 5 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=855occurred in iteration=16, InterpolantAutomatonStates: 145, 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, 0.8s SatisfiabilityAnalysisTime, 5.4s InterpolantComputationTime, 3559 NumberOfCodeBlocks, 3523 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 4002 ConstructedInterpolants, 0 QuantifiedInterpolants, 6442 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1858 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 30 InterpolantComputations, 15 PerfectInterpolantSequences, 1337/1620 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-16 12:42:42,725 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_92370801-e9a4-49f7-86d5-8887af6bee22/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