/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.error.function.in.sv-comp.mode false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:54:58,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:54:58,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:54:58,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:54:58,210 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:54:58,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:54:58,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:54:58,212 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:54:58,213 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:54:58,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:54:58,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:54:58,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:54:58,216 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:54:58,219 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:54:58,220 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:54:58,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:54:58,222 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:54:58,223 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:54:58,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:54:58,231 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:54:58,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:54:58,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:54:58,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:54:58,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:54:58,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:54:58,243 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:54:58,243 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:54:58,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:54:58,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:54:58,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:54:58,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:54:58,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:54:58,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:54:58,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:54:58,250 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:54:58,250 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:54:58,250 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:54:58,250 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:54:58,251 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:54:58,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:54:58,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:54:58,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-09-16 11:54:58,278 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:54:58,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:54:58,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:54:58,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:54:58,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:54:58,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:54:58,280 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:54:58,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:54:58,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:54:58,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:54:58,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:54:58,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:54:58,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:54:58,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:54:58,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:54:58,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:54:58,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:54:58,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:54:58,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:54:58,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:54:58,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:54:58,283 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:54:58,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:54:58,283 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:54:58,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:54:58,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:54:58,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:54:58,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:54:58,498 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:54:58,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2022-09-16 11:54:58,545 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981e9040e/746bdb33324d45e981c89100760e7f74/FLAG429551098 [2022-09-16 11:54:58,842 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:54:58,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2022-09-16 11:54:58,854 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981e9040e/746bdb33324d45e981c89100760e7f74/FLAG429551098 [2022-09-16 11:54:59,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/981e9040e/746bdb33324d45e981c89100760e7f74 [2022-09-16 11:54:59,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:54:59,282 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:54:59,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:54:59,285 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:54:59,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:54:59,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b59ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59, skipping insertion in model container [2022-09-16 11:54:59,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:54:59,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:54:59,474 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-09-16 11:54:59,476 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:54:59,481 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:54:59,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c[2476,2489] [2022-09-16 11:54:59,510 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:54:59,522 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:54:59,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59 WrapperNode [2022-09-16 11:54:59,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:54:59,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:54:59,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:54:59,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:54:59,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,582 INFO L138 Inliner]: procedures = 23, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 124 [2022-09-16 11:54:59,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:54:59,584 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:54:59,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:54:59,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:54:59,590 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:54:59,617 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:54:59,617 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:54:59,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:54:59,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (1/1) ... [2022-09-16 11:54:59,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:54:59,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:54:59,673 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-09-16 11:54:59,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-09-16 11:54:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:54:59,715 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:54:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:54:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:54:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-16 11:54:59,716 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:54:59,716 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:54:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:54:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:54:59,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:54:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:54:59,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:54:59,718 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-16 11:54:59,824 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:54:59,825 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:55:00,040 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:55:00,104 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:55:00,104 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-09-16 11:55:00,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:55:00 BoogieIcfgContainer [2022-09-16 11:55:00,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:55:00,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:55:00,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:55:00,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:55:00,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:54:59" (1/3) ... [2022-09-16 11:55:00,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e735d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:55:00, skipping insertion in model container [2022-09-16 11:55:00,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:54:59" (2/3) ... [2022-09-16 11:55:00,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e735d59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:55:00, skipping insertion in model container [2022-09-16 11:55:00,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:55:00" (3/3) ... [2022-09-16 11:55:00,114 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2022-09-16 11:55:00,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:55:00,129 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-09-16 11:55:00,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:55:00,195 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-16 11:55:00,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 147 transitions, 326 flow [2022-09-16 11:55:00,328 INFO L130 PetriNetUnfolder]: 9/143 cut-off events. [2022-09-16 11:55:00,329 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-16 11:55:00,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 143 events. 9/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 193 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-09-16 11:55:00,334 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 147 transitions, 326 flow [2022-09-16 11:55:00,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 120 transitions, 261 flow [2022-09-16 11:55:00,350 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:55:00,356 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@1645eb2f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:55:00,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2022-09-16 11:55:00,367 INFO L130 PetriNetUnfolder]: 1/33 cut-off events. [2022-09-16 11:55:00,367 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:55:00,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:00,367 INFO L208 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] [2022-09-16 11:55:00,368 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:00,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:00,371 INFO L85 PathProgramCache]: Analyzing trace with hash 903411107, now seen corresponding path program 1 times [2022-09-16 11:55:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329438981] [2022-09-16 11:55:00,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:00,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:00,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329438981] [2022-09-16 11:55:00,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329438981] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:00,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:00,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:00,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708712933] [2022-09-16 11:55:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:00,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:00,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:00,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:00,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:00,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-09-16 11:55:00,599 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 261 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:00,599 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:00,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-09-16 11:55:00,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:00,954 INFO L130 PetriNetUnfolder]: 832/2244 cut-off events. [2022-09-16 11:55:00,954 INFO L131 PetriNetUnfolder]: For 343/343 co-relation queries the response was YES. [2022-09-16 11:55:00,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 2244 events. 832/2244 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 17174 event pairs, 418 based on Foata normal form. 405/1736 useless extension candidates. Maximal degree in co-relation 2311. Up to 936 conditions per place. [2022-09-16 11:55:00,984 INFO L137 encePairwiseOnDemand]: 135/147 looper letters, 28 selfloop transitions, 2 changer transitions 0/126 dead transitions. [2022-09-16 11:55:00,984 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 126 transitions, 351 flow [2022-09-16 11:55:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:00,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2022-09-16 11:55:00,994 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9138321995464853 [2022-09-16 11:55:00,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2022-09-16 11:55:00,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2022-09-16 11:55:00,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:00,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2022-09-16 11:55:01,000 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,007 INFO L175 Difference]: Start difference. First operand has 125 places, 120 transitions, 261 flow. Second operand 3 states and 403 transitions. [2022-09-16 11:55:01,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 126 transitions, 351 flow [2022-09-16 11:55:01,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 126 transitions, 327 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:55:01,013 INFO L231 Difference]: Finished difference. Result has 119 places, 115 transitions, 254 flow [2022-09-16 11:55:01,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2022-09-16 11:55:01,017 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, -6 predicate places. [2022-09-16 11:55:01,017 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 254 flow [2022-09-16 11:55:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:01,017 INFO L208 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] [2022-09-16 11:55:01,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:55:01,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 594695334, now seen corresponding path program 1 times [2022-09-16 11:55:01,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:01,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577651877] [2022-09-16 11:55:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:01,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:01,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:01,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:01,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:01,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577651877] [2022-09-16 11:55:01,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577651877] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:01,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:01,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:01,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064384931] [2022-09-16 11:55:01,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:01,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:01,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:01,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:01,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:01,087 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:01,088 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,088 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:01,088 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:01,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:01,868 INFO L130 PetriNetUnfolder]: 3354/6986 cut-off events. [2022-09-16 11:55:01,869 INFO L131 PetriNetUnfolder]: For 743/753 co-relation queries the response was YES. [2022-09-16 11:55:01,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13246 conditions, 6986 events. 3354/6986 cut-off events. For 743/753 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 56894 event pairs, 1104 based on Foata normal form. 1/4103 useless extension candidates. Maximal degree in co-relation 9416. Up to 3019 conditions per place. [2022-09-16 11:55:01,954 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 64 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2022-09-16 11:55:01,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 155 transitions, 497 flow [2022-09-16 11:55:01,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:01,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:01,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 625 transitions. [2022-09-16 11:55:01,958 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2022-09-16 11:55:01,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 625 transitions. [2022-09-16 11:55:01,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 625 transitions. [2022-09-16 11:55:01,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:01,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 625 transitions. [2022-09-16 11:55:01,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.0) internal successors, (625), 5 states have internal predecessors, (625), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,963 INFO L175 Difference]: Start difference. First operand has 119 places, 115 transitions, 254 flow. Second operand 5 states and 625 transitions. [2022-09-16 11:55:01,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 155 transitions, 497 flow [2022-09-16 11:55:01,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 155 transitions, 495 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:01,968 INFO L231 Difference]: Finished difference. Result has 125 places, 118 transitions, 282 flow [2022-09-16 11:55:01,968 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2022-09-16 11:55:01,969 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2022-09-16 11:55:01,970 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 282 flow [2022-09-16 11:55:01,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:01,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:01,970 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:55:01,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-16 11:55:01,971 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:01,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:01,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1076040061, now seen corresponding path program 1 times [2022-09-16 11:55:01,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:01,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332410561] [2022-09-16 11:55:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:01,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:02,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:02,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:02,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:02,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332410561] [2022-09-16 11:55:02,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332410561] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:02,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:02,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:02,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997761943] [2022-09-16 11:55:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:02,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:02,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:02,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:02,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:02,051 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-09-16 11:55:02,051 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 282 flow. Second operand has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:02,051 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:02,051 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-09-16 11:55:02,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:02,271 INFO L130 PetriNetUnfolder]: 752/2118 cut-off events. [2022-09-16 11:55:02,271 INFO L131 PetriNetUnfolder]: For 288/355 co-relation queries the response was YES. [2022-09-16 11:55:02,281 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3689 conditions, 2118 events. 752/2118 cut-off events. For 288/355 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16199 event pairs, 435 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 2747. Up to 994 conditions per place. [2022-09-16 11:55:02,291 INFO L137 encePairwiseOnDemand]: 145/147 looper letters, 17 selfloop transitions, 1 changer transitions 0/117 dead transitions. [2022-09-16 11:55:02,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 117 transitions, 314 flow [2022-09-16 11:55:02,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:02,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2022-09-16 11:55:02,294 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8503401360544217 [2022-09-16 11:55:02,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2022-09-16 11:55:02,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2022-09-16 11:55:02,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:02,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2022-09-16 11:55:02,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:02,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:02,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:02,297 INFO L175 Difference]: Start difference. First operand has 125 places, 118 transitions, 282 flow. Second operand 3 states and 375 transitions. [2022-09-16 11:55:02,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 117 transitions, 314 flow [2022-09-16 11:55:02,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 117 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:02,301 INFO L231 Difference]: Finished difference. Result has 125 places, 117 transitions, 278 flow [2022-09-16 11:55:02,301 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=125, PETRI_TRANSITIONS=117} [2022-09-16 11:55:02,303 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 0 predicate places. [2022-09-16 11:55:02,303 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 117 transitions, 278 flow [2022-09-16 11:55:02,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:02,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:02,304 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:55:02,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-16 11:55:02,304 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:02,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1076040062, now seen corresponding path program 1 times [2022-09-16 11:55:02,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:02,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453631164] [2022-09-16 11:55:02,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:02,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:02,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:02,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453631164] [2022-09-16 11:55:02,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453631164] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:02,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022062274] [2022-09-16 11:55:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:02,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:02,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:02,392 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:02,394 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-16 11:55:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:55:02,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:02,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022062274] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:02,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:02,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:55:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876922326] [2022-09-16 11:55:02,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:02,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:55:02,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:55:02,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:55:02,575 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-09-16 11:55:02,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 117 transitions, 278 flow. Second operand has 7 states, 7 states have (on average 120.57142857142857) internal successors, (844), 7 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:02,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:02,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-09-16 11:55:02,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:03,072 INFO L130 PetriNetUnfolder]: 1427/4395 cut-off events. [2022-09-16 11:55:03,073 INFO L131 PetriNetUnfolder]: For 699/784 co-relation queries the response was YES. [2022-09-16 11:55:03,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7690 conditions, 4395 events. 1427/4395 cut-off events. For 699/784 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 38846 event pairs, 172 based on Foata normal form. 29/3300 useless extension candidates. Maximal degree in co-relation 7670. Up to 702 conditions per place. [2022-09-16 11:55:03,105 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 61 selfloop transitions, 8 changer transitions 0/168 dead transitions. [2022-09-16 11:55:03,106 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 168 transitions, 560 flow [2022-09-16 11:55:03,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-16 11:55:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-16 11:55:03,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 791 transitions. [2022-09-16 11:55:03,111 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8968253968253969 [2022-09-16 11:55:03,111 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 791 transitions. [2022-09-16 11:55:03,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 791 transitions. [2022-09-16 11:55:03,115 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:03,115 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 791 transitions. [2022-09-16 11:55:03,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 131.83333333333334) internal successors, (791), 6 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:03,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 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) [2022-09-16 11:55:03,119 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 147.0) internal successors, (1029), 7 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) [2022-09-16 11:55:03,119 INFO L175 Difference]: Start difference. First operand has 125 places, 117 transitions, 278 flow. Second operand 6 states and 791 transitions. [2022-09-16 11:55:03,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 168 transitions, 560 flow [2022-09-16 11:55:03,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 168 transitions, 559 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:03,127 INFO L231 Difference]: Finished difference. Result has 133 places, 123 transitions, 355 flow [2022-09-16 11:55:03,128 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=355, PETRI_PLACES=133, PETRI_TRANSITIONS=123} [2022-09-16 11:55:03,129 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 8 predicate places. [2022-09-16 11:55:03,129 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 123 transitions, 355 flow [2022-09-16 11:55:03,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 120.57142857142857) internal successors, (844), 7 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:03,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:03,130 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:03,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:03,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:03,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:03,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:03,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1012634053, now seen corresponding path program 1 times [2022-09-16 11:55:03,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:03,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816340867] [2022-09-16 11:55:03,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:03,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:03,419 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:03,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:03,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816340867] [2022-09-16 11:55:03,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816340867] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:03,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682883493] [2022-09-16 11:55:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:03,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:03,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:03,421 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:03,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-16 11:55:03,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:03,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:03,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:03,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:03,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:03,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682883493] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:03,554 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:03,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:03,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958637497] [2022-09-16 11:55:03,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:03,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:03,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:03,557 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:03,559 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 123 transitions, 355 flow. Second operand has 12 states, 12 states have (on average 113.66666666666667) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:03,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:03,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:03,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:06,066 INFO L130 PetriNetUnfolder]: 11390/19208 cut-off events. [2022-09-16 11:55:06,066 INFO L131 PetriNetUnfolder]: For 28766/28766 co-relation queries the response was YES. [2022-09-16 11:55:06,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51741 conditions, 19208 events. 11390/19208 cut-off events. For 28766/28766 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 145421 event pairs, 1406 based on Foata normal form. 275/14042 useless extension candidates. Maximal degree in co-relation 51717. Up to 3720 conditions per place. [2022-09-16 11:55:06,437 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 237 selfloop transitions, 18 changer transitions 0/342 dead transitions. [2022-09-16 11:55:06,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 342 transitions, 1758 flow [2022-09-16 11:55:06,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:06,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:06,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2222 transitions. [2022-09-16 11:55:06,442 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8397581254724111 [2022-09-16 11:55:06,442 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2222 transitions. [2022-09-16 11:55:06,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2222 transitions. [2022-09-16 11:55:06,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:06,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2222 transitions. [2022-09-16 11:55:06,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 123.44444444444444) internal successors, (2222), 18 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,451 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,451 INFO L175 Difference]: Start difference. First operand has 133 places, 123 transitions, 355 flow. Second operand 18 states and 2222 transitions. [2022-09-16 11:55:06,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 342 transitions, 1758 flow [2022-09-16 11:55:06,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 342 transitions, 1692 flow, removed 33 selfloop flow, removed 0 redundant places. [2022-09-16 11:55:06,472 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 453 flow [2022-09-16 11:55:06,473 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=453, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-09-16 11:55:06,473 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 29 predicate places. [2022-09-16 11:55:06,473 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 453 flow [2022-09-16 11:55:06,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.66666666666667) internal successors, (1364), 12 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:06,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:06,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:06,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:06,702 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1326885023, now seen corresponding path program 1 times [2022-09-16 11:55:06,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:06,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179911571] [2022-09-16 11:55:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:06,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:06,767 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:06,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:06,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179911571] [2022-09-16 11:55:06,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179911571] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:06,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43269140] [2022-09-16 11:55:06,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:06,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:06,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:06,772 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:06,773 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-16 11:55:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:06,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:06,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:06,854 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:06,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:06,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43269140] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:06,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:06,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:06,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649492642] [2022-09-16 11:55:06,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:06,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:06,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:06,856 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:06,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 453 flow. Second operand has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:06,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:06,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:06,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:08,756 INFO L130 PetriNetUnfolder]: 10247/17903 cut-off events. [2022-09-16 11:55:08,757 INFO L131 PetriNetUnfolder]: For 26313/27146 co-relation queries the response was YES. [2022-09-16 11:55:08,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48000 conditions, 17903 events. 10247/17903 cut-off events. For 26313/27146 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 141806 event pairs, 455 based on Foata normal form. 514/13284 useless extension candidates. Maximal degree in co-relation 47972. Up to 6763 conditions per place. [2022-09-16 11:55:08,988 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 87 selfloop transitions, 11 changer transitions 0/185 dead transitions. [2022-09-16 11:55:08,988 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 185 transitions, 793 flow [2022-09-16 11:55:08,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:08,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:08,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 859 transitions. [2022-09-16 11:55:08,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8347910592808552 [2022-09-16 11:55:08,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 859 transitions. [2022-09-16 11:55:08,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 859 transitions. [2022-09-16 11:55:08,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:08,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 859 transitions. [2022-09-16 11:55:08,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 122.71428571428571) internal successors, (859), 7 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:08,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:08,994 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:08,994 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 453 flow. Second operand 7 states and 859 transitions. [2022-09-16 11:55:08,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 185 transitions, 793 flow [2022-09-16 11:55:09,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 185 transitions, 761 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:09,015 INFO L231 Difference]: Finished difference. Result has 150 places, 131 transitions, 416 flow [2022-09-16 11:55:09,016 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=416, PETRI_PLACES=150, PETRI_TRANSITIONS=131} [2022-09-16 11:55:09,017 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 25 predicate places. [2022-09-16 11:55:09,017 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 131 transitions, 416 flow [2022-09-16 11:55:09,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.33333333333333) internal successors, (680), 6 states have internal predecessors, (680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:09,018 INFO L208 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] [2022-09-16 11:55:09,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:09,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:09,231 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:09,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:09,232 INFO L85 PathProgramCache]: Analyzing trace with hash 5271700, now seen corresponding path program 1 times [2022-09-16 11:55:09,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:09,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813647860] [2022-09-16 11:55:09,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:09,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:09,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:09,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:09,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813647860] [2022-09-16 11:55:09,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813647860] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:09,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:09,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:09,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84076302] [2022-09-16 11:55:09,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:09,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:09,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:09,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:09,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:09,262 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:09,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 131 transitions, 416 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:09,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:09,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:09,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:12,656 INFO L130 PetriNetUnfolder]: 19538/31695 cut-off events. [2022-09-16 11:55:12,657 INFO L131 PetriNetUnfolder]: For 27804/34744 co-relation queries the response was YES. [2022-09-16 11:55:12,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74951 conditions, 31695 events. 19538/31695 cut-off events. For 27804/34744 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 268968 event pairs, 9823 based on Foata normal form. 88/19120 useless extension candidates. Maximal degree in co-relation 74924. Up to 18916 conditions per place. [2022-09-16 11:55:12,973 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 85 selfloop transitions, 4 changer transitions 0/187 dead transitions. [2022-09-16 11:55:12,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 187 transitions, 851 flow [2022-09-16 11:55:12,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:12,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:12,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 624 transitions. [2022-09-16 11:55:12,975 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8489795918367347 [2022-09-16 11:55:12,975 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 624 transitions. [2022-09-16 11:55:12,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 624 transitions. [2022-09-16 11:55:12,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:12,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 624 transitions. [2022-09-16 11:55:12,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 124.8) internal successors, (624), 5 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,978 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:12,978 INFO L175 Difference]: Start difference. First operand has 150 places, 131 transitions, 416 flow. Second operand 5 states and 624 transitions. [2022-09-16 11:55:12,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 187 transitions, 851 flow [2022-09-16 11:55:13,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 187 transitions, 837 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:13,004 INFO L231 Difference]: Finished difference. Result has 152 places, 134 transitions, 432 flow [2022-09-16 11:55:13,004 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=432, PETRI_PLACES=152, PETRI_TRANSITIONS=134} [2022-09-16 11:55:13,004 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 27 predicate places. [2022-09-16 11:55:13,005 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 134 transitions, 432 flow [2022-09-16 11:55:13,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:13,005 INFO L208 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] [2022-09-16 11:55:13,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:55:13,005 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:13,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:13,006 INFO L85 PathProgramCache]: Analyzing trace with hash 954362146, now seen corresponding path program 1 times [2022-09-16 11:55:13,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:13,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899351116] [2022-09-16 11:55:13,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:13,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:13,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:13,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:13,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899351116] [2022-09-16 11:55:13,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899351116] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:13,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:13,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:13,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140376861] [2022-09-16 11:55:13,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:13,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:13,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:13,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:13,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:13,056 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-09-16 11:55:13,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 134 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:13,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:13,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-09-16 11:55:13,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:13,952 INFO L130 PetriNetUnfolder]: 2766/8913 cut-off events. [2022-09-16 11:55:13,952 INFO L131 PetriNetUnfolder]: For 8932/9071 co-relation queries the response was YES. [2022-09-16 11:55:14,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17429 conditions, 8913 events. 2766/8913 cut-off events. For 8932/9071 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 91257 event pairs, 904 based on Foata normal form. 105/6974 useless extension candidates. Maximal degree in co-relation 17399. Up to 3347 conditions per place. [2022-09-16 11:55:14,058 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 37 selfloop transitions, 2 changer transitions 1/150 dead transitions. [2022-09-16 11:55:14,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 150 transitions, 614 flow [2022-09-16 11:55:14,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:14,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2022-09-16 11:55:14,059 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8775510204081632 [2022-09-16 11:55:14,059 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2022-09-16 11:55:14,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2022-09-16 11:55:14,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:14,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2022-09-16 11:55:14,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:14,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:14,065 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:14,065 INFO L175 Difference]: Start difference. First operand has 152 places, 134 transitions, 432 flow. Second operand 3 states and 387 transitions. [2022-09-16 11:55:14,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 150 transitions, 614 flow [2022-09-16 11:55:14,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 150 transitions, 612 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:14,072 INFO L231 Difference]: Finished difference. Result has 154 places, 135 transitions, 448 flow [2022-09-16 11:55:14,072 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=430, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=448, PETRI_PLACES=154, PETRI_TRANSITIONS=135} [2022-09-16 11:55:14,075 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 29 predicate places. [2022-09-16 11:55:14,075 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 135 transitions, 448 flow [2022-09-16 11:55:14,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:14,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:14,076 INFO L208 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] [2022-09-16 11:55:14,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-16 11:55:14,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:14,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:14,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1980963676, now seen corresponding path program 1 times [2022-09-16 11:55:14,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:14,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158033628] [2022-09-16 11:55:14,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:14,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:14,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:14,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158033628] [2022-09-16 11:55:14,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158033628] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:14,111 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:14,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:14,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388653876] [2022-09-16 11:55:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:14,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:14,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:14,114 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:14,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 135 transitions, 448 flow. Second operand has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:14,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:14,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:17,142 INFO L130 PetriNetUnfolder]: 13061/24060 cut-off events. [2022-09-16 11:55:17,143 INFO L131 PetriNetUnfolder]: For 47115/47416 co-relation queries the response was YES. [2022-09-16 11:55:17,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69138 conditions, 24060 events. 13061/24060 cut-off events. For 47115/47416 co-relation queries the response was YES. Maximal size of possible extension queue 1438. Compared 228965 event pairs, 4473 based on Foata normal form. 6/19194 useless extension candidates. Maximal degree in co-relation 69107. Up to 12317 conditions per place. [2022-09-16 11:55:17,464 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 85 selfloop transitions, 4 changer transitions 1/191 dead transitions. [2022-09-16 11:55:17,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 191 transitions, 960 flow [2022-09-16 11:55:17,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:55:17,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:55:17,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 619 transitions. [2022-09-16 11:55:17,466 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8421768707482993 [2022-09-16 11:55:17,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 619 transitions. [2022-09-16 11:55:17,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 619 transitions. [2022-09-16 11:55:17,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:17,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 619 transitions. [2022-09-16 11:55:17,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.8) internal successors, (619), 5 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,469 INFO L175 Difference]: Start difference. First operand has 154 places, 135 transitions, 448 flow. Second operand 5 states and 619 transitions. [2022-09-16 11:55:17,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 191 transitions, 960 flow [2022-09-16 11:55:17,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 191 transitions, 958 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:17,478 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 476 flow [2022-09-16 11:55:17,478 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=476, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2022-09-16 11:55:17,478 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 35 predicate places. [2022-09-16 11:55:17,479 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 476 flow [2022-09-16 11:55:17,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:17,479 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:55:17,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-16 11:55:17,479 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:17,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 233088356, now seen corresponding path program 1 times [2022-09-16 11:55:17,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:17,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188753539] [2022-09-16 11:55:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:17,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:17,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:17,504 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:17,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188753539] [2022-09-16 11:55:17,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188753539] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:17,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484469166] [2022-09-16 11:55:17,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:17,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:17,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:17,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:17,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-16 11:55:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:17,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2022-09-16 11:55:17,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:17,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:17,663 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:17,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484469166] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:17,663 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:17,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-09-16 11:55:17,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869399600] [2022-09-16 11:55:17,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:17,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:55:17,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:17,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:55:17,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:55:17,665 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-09-16 11:55:17,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 476 flow. Second operand has 7 states, 7 states have (on average 121.42857142857143) internal successors, (850), 7 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:17,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:17,666 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-09-16 11:55:17,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:20,114 INFO L130 PetriNetUnfolder]: 5155/18837 cut-off events. [2022-09-16 11:55:20,114 INFO L131 PetriNetUnfolder]: For 17442/18037 co-relation queries the response was YES. [2022-09-16 11:55:20,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41382 conditions, 18837 events. 5155/18837 cut-off events. For 17442/18037 co-relation queries the response was YES. Maximal size of possible extension queue 649. Compared 229052 event pairs, 436 based on Foata normal form. 335/15922 useless extension candidates. Maximal degree in co-relation 41348. Up to 3687 conditions per place. [2022-09-16 11:55:20,340 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 97 selfloop transitions, 12 changer transitions 0/222 dead transitions. [2022-09-16 11:55:20,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 222 transitions, 1231 flow [2022-09-16 11:55:20,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:20,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:20,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 911 transitions. [2022-09-16 11:55:20,342 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8853255587949466 [2022-09-16 11:55:20,342 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 911 transitions. [2022-09-16 11:55:20,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 911 transitions. [2022-09-16 11:55:20,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:20,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 911 transitions. [2022-09-16 11:55:20,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 130.14285714285714) internal successors, (911), 7 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,346 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,346 INFO L175 Difference]: Start difference. First operand has 160 places, 138 transitions, 476 flow. Second operand 7 states and 911 transitions. [2022-09-16 11:55:20,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 222 transitions, 1231 flow [2022-09-16 11:55:20,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 222 transitions, 1229 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:20,359 INFO L231 Difference]: Finished difference. Result has 170 places, 147 transitions, 583 flow [2022-09-16 11:55:20,360 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=583, PETRI_PLACES=170, PETRI_TRANSITIONS=147} [2022-09-16 11:55:20,360 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 45 predicate places. [2022-09-16 11:55:20,360 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 147 transitions, 583 flow [2022-09-16 11:55:20,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 121.42857142857143) internal successors, (850), 7 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:20,361 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2022-09-16 11:55:20,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:20,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:20,565 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:20,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:20,566 INFO L85 PathProgramCache]: Analyzing trace with hash 233088357, now seen corresponding path program 1 times [2022-09-16 11:55:20,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:20,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71963043] [2022-09-16 11:55:20,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:20,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:20,594 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:20,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:20,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71963043] [2022-09-16 11:55:20,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71963043] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:20,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:20,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:55:20,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316154312] [2022-09-16 11:55:20,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:20,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:55:20,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:20,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:55:20,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:55:20,596 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 147 [2022-09-16 11:55:20,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 147 transitions, 583 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:20,597 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:20,597 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 147 [2022-09-16 11:55:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:23,065 INFO L130 PetriNetUnfolder]: 4098/17896 cut-off events. [2022-09-16 11:55:23,065 INFO L131 PetriNetUnfolder]: For 40606/46024 co-relation queries the response was YES. [2022-09-16 11:55:23,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44387 conditions, 17896 events. 4098/17896 cut-off events. For 40606/46024 co-relation queries the response was YES. Maximal size of possible extension queue 570. Compared 222486 event pairs, 2261 based on Foata normal form. 719/15967 useless extension candidates. Maximal degree in co-relation 44348. Up to 5723 conditions per place. [2022-09-16 11:55:23,302 INFO L137 encePairwiseOnDemand]: 145/147 looper letters, 29 selfloop transitions, 1 changer transitions 0/143 dead transitions. [2022-09-16 11:55:23,302 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 143 transitions, 612 flow [2022-09-16 11:55:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:55:23,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:55:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2022-09-16 11:55:23,303 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8480725623582767 [2022-09-16 11:55:23,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2022-09-16 11:55:23,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2022-09-16 11:55:23,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:23,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2022-09-16 11:55:23,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 147.0) internal successors, (588), 4 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,306 INFO L175 Difference]: Start difference. First operand has 170 places, 147 transitions, 583 flow. Second operand 3 states and 374 transitions. [2022-09-16 11:55:23,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 143 transitions, 612 flow [2022-09-16 11:55:23,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 143 transitions, 600 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:23,340 INFO L231 Difference]: Finished difference. Result has 169 places, 143 transitions, 542 flow [2022-09-16 11:55:23,340 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=542, PETRI_PLACES=169, PETRI_TRANSITIONS=143} [2022-09-16 11:55:23,341 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 44 predicate places. [2022-09-16 11:55:23,341 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 143 transitions, 542 flow [2022-09-16 11:55:23,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:23,341 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:23,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-09-16 11:55:23,341 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:23,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:23,342 INFO L85 PathProgramCache]: Analyzing trace with hash 659627047, now seen corresponding path program 1 times [2022-09-16 11:55:23,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:23,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696107840] [2022-09-16 11:55:23,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:23,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:23,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:23,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:23,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696107840] [2022-09-16 11:55:23,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696107840] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:23,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192163911] [2022-09-16 11:55:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:23,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:23,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:23,407 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:23,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-16 11:55:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:23,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:23,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:23,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:23,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:55:23,651 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:23,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192163911] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:55:23,652 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:55:23,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:55:23,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375720304] [2022-09-16 11:55:23,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:55:23,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:55:23,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:23,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:55:23,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:55:23,653 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:23,654 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 143 transitions, 542 flow. Second operand has 12 states, 12 states have (on average 113.83333333333333) internal successors, (1366), 12 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:23,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:23,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:23,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:37,635 INFO L130 PetriNetUnfolder]: 47360/83602 cut-off events. [2022-09-16 11:55:37,635 INFO L131 PetriNetUnfolder]: For 278890/279215 co-relation queries the response was YES. [2022-09-16 11:55:38,665 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286530 conditions, 83602 events. 47360/83602 cut-off events. For 278890/279215 co-relation queries the response was YES. Maximal size of possible extension queue 3569. Compared 870396 event pairs, 5174 based on Foata normal form. 1441/79169 useless extension candidates. Maximal degree in co-relation 286491. Up to 14973 conditions per place. [2022-09-16 11:55:39,580 INFO L137 encePairwiseOnDemand]: 140/147 looper letters, 330 selfloop transitions, 18 changer transitions 1/450 dead transitions. [2022-09-16 11:55:39,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 450 transitions, 3283 flow [2022-09-16 11:55:39,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:55:39,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:55:39,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2197 transitions. [2022-09-16 11:55:39,585 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8303099017384732 [2022-09-16 11:55:39,585 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2197 transitions. [2022-09-16 11:55:39,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2197 transitions. [2022-09-16 11:55:39,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:39,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2197 transitions. [2022-09-16 11:55:39,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 122.05555555555556) internal successors, (2197), 18 states have internal predecessors, (2197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,593 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 147.0) internal successors, (2793), 19 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,593 INFO L175 Difference]: Start difference. First operand has 169 places, 143 transitions, 542 flow. Second operand 18 states and 2197 transitions. [2022-09-16 11:55:39,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 450 transitions, 3283 flow [2022-09-16 11:55:39,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 450 transitions, 3282 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:55:39,699 INFO L231 Difference]: Finished difference. Result has 189 places, 155 transitions, 647 flow [2022-09-16 11:55:39,699 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=541, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=647, PETRI_PLACES=189, PETRI_TRANSITIONS=155} [2022-09-16 11:55:39,700 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 64 predicate places. [2022-09-16 11:55:39,700 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 155 transitions, 647 flow [2022-09-16 11:55:39,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 113.83333333333333) internal successors, (1366), 12 states have internal predecessors, (1366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:39,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:39,701 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:55:39,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-09-16 11:55:39,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-09-16 11:55:39,910 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:39,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:39,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1026397539, now seen corresponding path program 1 times [2022-09-16 11:55:39,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:39,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261804140] [2022-09-16 11:55:39,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:39,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:39,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261804140] [2022-09-16 11:55:39,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261804140] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:55:39,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659377881] [2022-09-16 11:55:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:39,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:39,952 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:55:39,968 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:55:39,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-09-16 11:55:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:40,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:55:40,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:55:40,065 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:40,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:55:40,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659377881] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:40,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:55:40,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:55:40,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313952659] [2022-09-16 11:55:40,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:40,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:55:40,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:40,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:55:40,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:55:40,067 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:40,068 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 155 transitions, 647 flow. Second operand has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:40,068 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:40,068 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:40,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:55:52,817 INFO L130 PetriNetUnfolder]: 42181/76641 cut-off events. [2022-09-16 11:55:52,817 INFO L131 PetriNetUnfolder]: For 264713/267416 co-relation queries the response was YES. [2022-09-16 11:55:53,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269123 conditions, 76641 events. 42181/76641 cut-off events. For 264713/267416 co-relation queries the response was YES. Maximal size of possible extension queue 3368. Compared 827807 event pairs, 2319 based on Foata normal form. 2628/73217 useless extension candidates. Maximal degree in co-relation 269081. Up to 29401 conditions per place. [2022-09-16 11:55:54,591 INFO L137 encePairwiseOnDemand]: 142/147 looper letters, 120 selfloop transitions, 11 changer transitions 1/233 dead transitions. [2022-09-16 11:55:54,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 233 transitions, 1434 flow [2022-09-16 11:55:54,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:55:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:55:54,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 851 transitions. [2022-09-16 11:55:54,593 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.827016520894072 [2022-09-16 11:55:54,593 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 851 transitions. [2022-09-16 11:55:54,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 851 transitions. [2022-09-16 11:55:54,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:55:54,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 851 transitions. [2022-09-16 11:55:54,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.57142857142857) internal successors, (851), 7 states have internal predecessors, (851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,596 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 147.0) internal successors, (1176), 8 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,596 INFO L175 Difference]: Start difference. First operand has 189 places, 155 transitions, 647 flow. Second operand 7 states and 851 transitions. [2022-09-16 11:55:54,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 233 transitions, 1434 flow [2022-09-16 11:55:54,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 233 transitions, 1402 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-09-16 11:55:54,800 INFO L231 Difference]: Finished difference. Result has 185 places, 151 transitions, 610 flow [2022-09-16 11:55:54,800 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=588, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=610, PETRI_PLACES=185, PETRI_TRANSITIONS=151} [2022-09-16 11:55:54,800 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 60 predicate places. [2022-09-16 11:55:54,801 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 151 transitions, 610 flow [2022-09-16 11:55:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 113.66666666666667) internal successors, (682), 6 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:54,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:55:54,801 INFO L208 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] [2022-09-16 11:55:54,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-09-16 11:55:55,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:55:55,002 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:55:55,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:55:55,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1116231204, now seen corresponding path program 1 times [2022-09-16 11:55:55,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:55:55,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023859609] [2022-09-16 11:55:55,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:55:55,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:55:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:55:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:55:55,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:55:55,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023859609] [2022-09-16 11:55:55,040 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023859609] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:55:55,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:55:55,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:55:55,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585999242] [2022-09-16 11:55:55,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:55:55,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:55:55,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:55:55,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:55:55,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:55:55,042 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:55:55,042 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 151 transitions, 610 flow. Second operand has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:55:55,043 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:55:55,043 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:55:55,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:56:13,071 INFO L130 PetriNetUnfolder]: 54929/98955 cut-off events. [2022-09-16 11:56:13,072 INFO L131 PetriNetUnfolder]: For 294501/317918 co-relation queries the response was YES. [2022-09-16 11:56:14,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320247 conditions, 98955 events. 54929/98955 cut-off events. For 294501/317918 co-relation queries the response was YES. Maximal size of possible extension queue 4746. Compared 1125421 event pairs, 27978 based on Foata normal form. 607/83172 useless extension candidates. Maximal degree in co-relation 320206. Up to 57807 conditions per place. [2022-09-16 11:56:15,229 INFO L137 encePairwiseOnDemand]: 141/147 looper letters, 107 selfloop transitions, 4 changer transitions 0/223 dead transitions. [2022-09-16 11:56:15,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 223 transitions, 1311 flow [2022-09-16 11:56:15,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:56:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:56:15,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 618 transitions. [2022-09-16 11:56:15,230 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8408163265306122 [2022-09-16 11:56:15,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 618 transitions. [2022-09-16 11:56:15,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 618 transitions. [2022-09-16 11:56:15,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:56:15,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 618 transitions. [2022-09-16 11:56:15,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 123.6) internal successors, (618), 5 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:15,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:15,233 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 147.0) internal successors, (882), 6 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:15,233 INFO L175 Difference]: Start difference. First operand has 185 places, 151 transitions, 610 flow. Second operand 5 states and 618 transitions. [2022-09-16 11:56:15,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 223 transitions, 1311 flow [2022-09-16 11:56:15,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 223 transitions, 1297 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:56:15,510 INFO L231 Difference]: Finished difference. Result has 187 places, 154 transitions, 626 flow [2022-09-16 11:56:15,511 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=147, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=626, PETRI_PLACES=187, PETRI_TRANSITIONS=154} [2022-09-16 11:56:15,511 INFO L287 CegarLoopForPetriNet]: 125 programPoint places, 62 predicate places. [2022-09-16 11:56:15,511 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 154 transitions, 626 flow [2022-09-16 11:56:15,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:15,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:56:15,512 INFO L208 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] [2022-09-16 11:56:15,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-09-16 11:56:15,512 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2022-09-16 11:56:15,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:56:15,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1901496, now seen corresponding path program 1 times [2022-09-16 11:56:15,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:56:15,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305932402] [2022-09-16 11:56:15,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:15,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:56:15,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:15,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:15,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:56:15,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305932402] [2022-09-16 11:56:15,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305932402] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:56:15,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759115573] [2022-09-16 11:56:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:56:15,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:56:15,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:56:15,541 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-16 11:56:15,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-09-16 11:56:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:56:15,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:56:15,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:56:15,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:15,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:56:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:56:15,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759115573] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:56:15,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:56:15,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:56:15,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361250008] [2022-09-16 11:56:15,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:56:15,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:56:15,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:56:15,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:56:15,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:56:15,671 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 147 [2022-09-16 11:56:15,672 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 154 transitions, 626 flow. Second operand has 12 states, 12 states have (on average 114.16666666666667) internal successors, (1370), 12 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:56:15,672 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:56:15,672 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 147 [2022-09-16 11:56:15,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand