/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-bad-dot-product.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-53ca081-m [2022-09-16 11:53:10,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-16 11:53:10,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-16 11:53:10,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-16 11:53:10,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-16 11:53:10,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-16 11:53:10,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-16 11:53:10,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-16 11:53:10,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-16 11:53:10,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-16 11:53:10,477 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-16 11:53:10,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-16 11:53:10,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-16 11:53:10,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-16 11:53:10,481 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-16 11:53:10,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-16 11:53:10,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-16 11:53:10,488 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-16 11:53:10,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-16 11:53:10,495 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-16 11:53:10,497 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-16 11:53:10,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-16 11:53:10,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-16 11:53:10,501 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-16 11:53:10,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-16 11:53:10,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-16 11:53:10,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-16 11:53:10,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-16 11:53:10,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-16 11:53:10,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-16 11:53:10,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-16 11:53:10,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-16 11:53:10,508 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-16 11:53:10,508 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-16 11:53:10,508 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-16 11:53:10,509 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-16 11:53:10,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-16 11:53:10,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-16 11:53:10,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-16 11:53:10,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-16 11:53:10,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-16 11:53:10,513 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 11:53:10,535 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-16 11:53:10,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-16 11:53:10,536 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-16 11:53:10,536 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-16 11:53:10,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-16 11:53:10,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-16 11:53:10,536 INFO L138 SettingsManager]: * Use SBE=true [2022-09-16 11:53:10,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-16 11:53:10,537 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-16 11:53:10,537 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-16 11:53:10,537 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-16 11:53:10,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-16 11:53:10,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-16 11:53:10,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-16 11:53:10,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-16 11:53:10,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:53:10,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-16 11:53:10,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-16 11:53:10,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-16 11:53:10,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-16 11:53:10,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-16 11:53:10,540 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-16 11:53:10,540 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-16 11:53:10,540 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of error function in SV-COMP mode -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2022-09-16 11:53:10,724 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-16 11:53:10,747 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-16 11:53:10,749 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-16 11:53:10,750 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-16 11:53:10,750 INFO L275 PluginConnector]: CDTParser initialized [2022-09-16 11:53:10,751 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2022-09-16 11:53:10,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9278b96/e39f10e6f5624d0f8aab8c027d17d0d1/FLAGdd00bdc45 [2022-09-16 11:53:11,135 INFO L306 CDTParser]: Found 1 translation units. [2022-09-16 11:53:11,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2022-09-16 11:53:11,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9278b96/e39f10e6f5624d0f8aab8c027d17d0d1/FLAGdd00bdc45 [2022-09-16 11:53:11,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df9278b96/e39f10e6f5624d0f8aab8c027d17d0d1 [2022-09-16 11:53:11,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-16 11:53:11,158 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-16 11:53:11,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-16 11:53:11,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-16 11:53:11,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-16 11:53:11,163 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cdfa08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11, skipping insertion in model container [2022-09-16 11:53:11,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-16 11:53:11,184 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-16 11:53:11,361 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-bad-dot-product.wvr.c[2865,2878] [2022-09-16 11:53:11,369 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:53:11,376 INFO L203 MainTranslator]: Completed pre-run [2022-09-16 11:53:11,397 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-bad-dot-product.wvr.c[2865,2878] [2022-09-16 11:53:11,400 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-16 11:53:11,413 INFO L208 MainTranslator]: Completed translation [2022-09-16 11:53:11,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11 WrapperNode [2022-09-16 11:53:11,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-16 11:53:11,414 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-16 11:53:11,414 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-16 11:53:11,414 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-16 11:53:11,423 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,440 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,472 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 333 [2022-09-16 11:53:11,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-16 11:53:11,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-16 11:53:11,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-16 11:53:11,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-16 11:53:11,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,487 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,506 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-16 11:53:11,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-16 11:53:11,507 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-16 11:53:11,507 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-16 11:53:11,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (1/1) ... [2022-09-16 11:53:11,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-16 11:53:11,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:11,540 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 11:53:11,547 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 11:53:11,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-16 11:53:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-16 11:53:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-16 11:53:11,581 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-16 11:53:11,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-16 11:53:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-16 11:53:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-16 11:53:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-16 11:53:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-16 11:53:11,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-16 11:53:11,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-16 11:53:11,583 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 11:53:11,707 INFO L234 CfgBuilder]: Building ICFG [2022-09-16 11:53:11,708 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-16 11:53:12,149 INFO L275 CfgBuilder]: Performing block encoding [2022-09-16 11:53:12,508 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-16 11:53:12,508 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-09-16 11:53:12,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:53:12 BoogieIcfgContainer [2022-09-16 11:53:12,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-16 11:53:12,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-16 11:53:12,513 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-16 11:53:12,515 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-16 11:53:12,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:53:11" (1/3) ... [2022-09-16 11:53:12,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532029bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:53:12, skipping insertion in model container [2022-09-16 11:53:12,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:53:11" (2/3) ... [2022-09-16 11:53:12,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@532029bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:53:12, skipping insertion in model container [2022-09-16 11:53:12,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:53:12" (3/3) ... [2022-09-16 11:53:12,517 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2022-09-16 11:53:12,528 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-16 11:53:12,528 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2022-09-16 11:53:12,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-16 11:53:12,627 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-16 11:53:12,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 291 places, 306 transitions, 636 flow [2022-09-16 11:53:12,753 INFO L130 PetriNetUnfolder]: 25/303 cut-off events. [2022-09-16 11:53:12,754 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-16 11:53:12,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 303 events. 25/303 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 598 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 232. Up to 2 conditions per place. [2022-09-16 11:53:12,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 306 transitions, 636 flow [2022-09-16 11:53:12,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 282 transitions, 579 flow [2022-09-16 11:53:12,789 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-16 11:53:12,794 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;@34b4cc58, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-16 11:53:12,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 67 error locations. [2022-09-16 11:53:12,807 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2022-09-16 11:53:12,807 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-16 11:53:12,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:12,808 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, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:12,808 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:12,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:12,812 INFO L85 PathProgramCache]: Analyzing trace with hash 362630567, now seen corresponding path program 1 times [2022-09-16 11:53:12,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:12,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956927288] [2022-09-16 11:53:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:12,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:13,018 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 11:53:13,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:13,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956927288] [2022-09-16 11:53:13,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956927288] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:13,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:13,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-16 11:53:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46282645] [2022-09-16 11:53:13,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:13,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-16 11:53:13,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:13,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-16 11:53:13,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-09-16 11:53:13,053 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-09-16 11:53:13,057 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 282 transitions, 579 flow. Second operand has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 11:53:13,058 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:13,058 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-09-16 11:53:13,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:14,186 INFO L130 PetriNetUnfolder]: 1085/5053 cut-off events. [2022-09-16 11:53:14,186 INFO L131 PetriNetUnfolder]: For 338/338 co-relation queries the response was YES. [2022-09-16 11:53:14,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 5053 events. 1085/5053 cut-off events. For 338/338 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 58003 event pairs, 910 based on Foata normal form. 758/4093 useless extension candidates. Maximal degree in co-relation 2983. Up to 781 conditions per place. [2022-09-16 11:53:14,238 INFO L137 encePairwiseOnDemand]: 271/306 looper letters, 72 selfloop transitions, 9 changer transitions 5/297 dead transitions. [2022-09-16 11:53:14,238 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 297 transitions, 786 flow [2022-09-16 11:53:14,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-16 11:53:14,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-16 11:53:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1310 transitions. [2022-09-16 11:53:14,257 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8562091503267973 [2022-09-16 11:53:14,258 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1310 transitions. [2022-09-16 11:53:14,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1310 transitions. [2022-09-16 11:53:14,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:14,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1310 transitions. [2022-09-16 11:53:14,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 0 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 11:53:14,281 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 11:53:14,282 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 306.0) internal successors, (1836), 6 states have internal predecessors, (1836), 0 states have call successors, (0), 0 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 11:53:14,283 INFO L175 Difference]: Start difference. First operand has 268 places, 282 transitions, 579 flow. Second operand 5 states and 1310 transitions. [2022-09-16 11:53:14,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 297 transitions, 786 flow [2022-09-16 11:53:14,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 297 transitions, 768 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:14,299 INFO L231 Difference]: Finished difference. Result has 264 places, 262 transitions, 583 flow [2022-09-16 11:53:14,301 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=526, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=583, PETRI_PLACES=264, PETRI_TRANSITIONS=262} [2022-09-16 11:53:14,305 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, -4 predicate places. [2022-09-16 11:53:14,305 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 262 transitions, 583 flow [2022-09-16 11:53:14,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 238.5) internal successors, (954), 4 states have internal predecessors, (954), 0 states have call successors, (0), 0 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 11:53:14,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:14,307 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-16 11:53:14,308 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:14,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:14,309 INFO L85 PathProgramCache]: Analyzing trace with hash -156937505, now seen corresponding path program 1 times [2022-09-16 11:53:14,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:14,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110383740] [2022-09-16 11:53:14,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:14,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:14,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:14,417 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 11:53:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:14,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110383740] [2022-09-16 11:53:14,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110383740] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:14,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022639004] [2022-09-16 11:53:14,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:14,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:14,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:14,425 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 11:53:14,443 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 11:53:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:14,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:14,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:14,618 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 11:53:14,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:14,688 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 11:53:14,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022639004] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:14,689 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:14,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-09-16 11:53:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414931411] [2022-09-16 11:53:14,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:14,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:53:14,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:14,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:53:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:53:14,695 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-09-16 11:53:14,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 262 transitions, 583 flow. Second operand has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 0 states have call successors, (0), 0 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 11:53:14,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:14,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-09-16 11:53:14,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:16,622 INFO L130 PetriNetUnfolder]: 2711/12512 cut-off events. [2022-09-16 11:53:16,623 INFO L131 PetriNetUnfolder]: For 237/237 co-relation queries the response was YES. [2022-09-16 11:53:16,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16836 conditions, 12512 events. 2711/12512 cut-off events. For 237/237 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 162265 event pairs, 2275 based on Foata normal form. 6/8248 useless extension candidates. Maximal degree in co-relation 13264. Up to 774 conditions per place. [2022-09-16 11:53:16,734 INFO L137 encePairwiseOnDemand]: 291/306 looper letters, 156 selfloop transitions, 40 changer transitions 0/407 dead transitions. [2022-09-16 11:53:16,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 407 transitions, 1339 flow [2022-09-16 11:53:16,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-09-16 11:53:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-09-16 11:53:16,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4468 transitions. [2022-09-16 11:53:16,743 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8111837327523602 [2022-09-16 11:53:16,743 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 4468 transitions. [2022-09-16 11:53:16,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 4468 transitions. [2022-09-16 11:53:16,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:16,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 4468 transitions. [2022-09-16 11:53:16,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 248.22222222222223) internal successors, (4468), 18 states have internal predecessors, (4468), 0 states have call successors, (0), 0 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 11:53:16,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 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 11:53:16,765 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 306.0) internal successors, (5814), 19 states have internal predecessors, (5814), 0 states have call successors, (0), 0 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 11:53:16,765 INFO L175 Difference]: Start difference. First operand has 264 places, 262 transitions, 583 flow. Second operand 18 states and 4468 transitions. [2022-09-16 11:53:16,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 407 transitions, 1339 flow [2022-09-16 11:53:16,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 407 transitions, 1334 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-16 11:53:16,773 INFO L231 Difference]: Finished difference. Result has 279 places, 289 transitions, 816 flow [2022-09-16 11:53:16,774 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=816, PETRI_PLACES=279, PETRI_TRANSITIONS=289} [2022-09-16 11:53:16,774 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, 11 predicate places. [2022-09-16 11:53:16,775 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 289 transitions, 816 flow [2022-09-16 11:53:16,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 239.66666666666666) internal successors, (2876), 12 states have internal predecessors, (2876), 0 states have call successors, (0), 0 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 11:53:16,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:16,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:16,822 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 11:53:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:16,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:16,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash -570094258, now seen corresponding path program 1 times [2022-09-16 11:53:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:16,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488027332] [2022-09-16 11:53:16,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:16,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:17,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:17,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:17,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488027332] [2022-09-16 11:53:17,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488027332] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:17,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093294237] [2022-09-16 11:53:17,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:17,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:17,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:17,091 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 11:53:17,093 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 11:53:17,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:17,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 5 conjunts are in the unsatisfiable core [2022-09-16 11:53:17,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:17,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:17,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-09-16 11:53:17,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093294237] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:17,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-09-16 11:53:17,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2022-09-16 11:53:17,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222149454] [2022-09-16 11:53:17,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:17,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-16 11:53:17,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:17,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-16 11:53:17,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-09-16 11:53:17,297 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 306 [2022-09-16 11:53:17,299 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 289 transitions, 816 flow. Second operand has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 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 11:53:17,299 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:17,299 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 306 [2022-09-16 11:53:17,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:19,063 INFO L130 PetriNetUnfolder]: 2711/12504 cut-off events. [2022-09-16 11:53:19,063 INFO L131 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2022-09-16 11:53:19,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16873 conditions, 12504 events. 2711/12504 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 724. Compared 161892 event pairs, 2275 based on Foata normal form. 8/8242 useless extension candidates. Maximal degree in co-relation 13468. Up to 3052 conditions per place. [2022-09-16 11:53:19,166 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 73 selfloop transitions, 27 changer transitions 0/311 dead transitions. [2022-09-16 11:53:19,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 311 transitions, 1032 flow [2022-09-16 11:53:19,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-16 11:53:19,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-16 11:53:19,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1740 transitions. [2022-09-16 11:53:19,170 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8123249299719888 [2022-09-16 11:53:19,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1740 transitions. [2022-09-16 11:53:19,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1740 transitions. [2022-09-16 11:53:19,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:19,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1740 transitions. [2022-09-16 11:53:19,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 248.57142857142858) internal successors, (1740), 7 states have internal predecessors, (1740), 0 states have call successors, (0), 0 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 11:53:19,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 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 11:53:19,179 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 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 11:53:19,179 INFO L175 Difference]: Start difference. First operand has 279 places, 289 transitions, 816 flow. Second operand 7 states and 1740 transitions. [2022-09-16 11:53:19,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 311 transitions, 1032 flow [2022-09-16 11:53:19,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 311 transitions, 958 flow, removed 26 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:19,188 INFO L231 Difference]: Finished difference. Result has 274 places, 281 transitions, 742 flow [2022-09-16 11:53:19,189 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=254, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=742, PETRI_PLACES=274, PETRI_TRANSITIONS=281} [2022-09-16 11:53:19,190 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, 6 predicate places. [2022-09-16 11:53:19,190 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 281 transitions, 742 flow [2022-09-16 11:53:19,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 239.33333333333334) internal successors, (1436), 6 states have internal predecessors, (1436), 0 states have call successors, (0), 0 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 11:53:19,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:19,191 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-16 11:53:19,216 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 11:53:19,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-09-16 11:53:19,417 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:19,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:19,418 INFO L85 PathProgramCache]: Analyzing trace with hash 451955623, now seen corresponding path program 2 times [2022-09-16 11:53:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:19,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95279444] [2022-09-16 11:53:19,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:19,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:19,566 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-16 11:53:19,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:19,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95279444] [2022-09-16 11:53:19,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95279444] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-16 11:53:19,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260214714] [2022-09-16 11:53:19,567 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-16 11:53:19,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-16 11:53:19,569 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 11:53:19,571 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 11:53:19,690 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-09-16 11:53:19,692 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-16 11:53:19,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 7 conjunts are in the unsatisfiable core [2022-09-16 11:53:19,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-16 11:53:19,820 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:53:19,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-16 11:53:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-09-16 11:53:19,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [260214714] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-16 11:53:19,939 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-16 11:53:19,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 17 [2022-09-16 11:53:19,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913063372] [2022-09-16 11:53:19,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-16 11:53:19,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-09-16 11:53:19,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:19,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-09-16 11:53:19,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2022-09-16 11:53:19,945 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 306 [2022-09-16 11:53:19,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 281 transitions, 742 flow. Second operand has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 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 11:53:19,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:19,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 306 [2022-09-16 11:53:19,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:24,443 INFO L130 PetriNetUnfolder]: 7078/25163 cut-off events. [2022-09-16 11:53:24,443 INFO L131 PetriNetUnfolder]: For 532/532 co-relation queries the response was YES. [2022-09-16 11:53:24,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35972 conditions, 25163 events. 7078/25163 cut-off events. For 532/532 co-relation queries the response was YES. Maximal size of possible extension queue 1038. Compared 333073 event pairs, 5509 based on Foata normal form. 4/15626 useless extension candidates. Maximal degree in co-relation 30534. Up to 1422 conditions per place. [2022-09-16 11:53:24,646 INFO L137 encePairwiseOnDemand]: 286/306 looper letters, 247 selfloop transitions, 65 changer transitions 0/503 dead transitions. [2022-09-16 11:53:24,647 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 503 transitions, 1905 flow [2022-09-16 11:53:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-09-16 11:53:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-09-16 11:53:24,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 10949 transitions. [2022-09-16 11:53:24,664 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7302254235027344 [2022-09-16 11:53:24,664 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 10949 transitions. [2022-09-16 11:53:24,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 10949 transitions. [2022-09-16 11:53:24,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:24,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 10949 transitions. [2022-09-16 11:53:24,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 223.44897959183675) internal successors, (10949), 49 states have internal predecessors, (10949), 0 states have call successors, (0), 0 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 11:53:24,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 0 states have call successors, (0), 0 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 11:53:24,724 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 306.0) internal successors, (15300), 50 states have internal predecessors, (15300), 0 states have call successors, (0), 0 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 11:53:24,725 INFO L175 Difference]: Start difference. First operand has 274 places, 281 transitions, 742 flow. Second operand 49 states and 10949 transitions. [2022-09-16 11:53:24,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 503 transitions, 1905 flow [2022-09-16 11:53:24,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 503 transitions, 1862 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-16 11:53:24,732 INFO L231 Difference]: Finished difference. Result has 320 places, 306 transitions, 957 flow [2022-09-16 11:53:24,732 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=957, PETRI_PLACES=320, PETRI_TRANSITIONS=306} [2022-09-16 11:53:24,733 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, 52 predicate places. [2022-09-16 11:53:24,733 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 306 transitions, 957 flow [2022-09-16 11:53:24,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 220.61111111111111) internal successors, (3971), 18 states have internal predecessors, (3971), 0 states have call successors, (0), 0 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 11:53:24,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:24,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:24,755 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 11:53:24,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-16 11:53:24,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:24,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:24,951 INFO L85 PathProgramCache]: Analyzing trace with hash -425379181, now seen corresponding path program 1 times [2022-09-16 11:53:24,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:24,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113509146] [2022-09-16 11:53:24,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:24,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:25,052 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 11:53:25,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:25,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113509146] [2022-09-16 11:53:25,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113509146] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:25,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:25,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-16 11:53:25,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372965187] [2022-09-16 11:53:25,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:25,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-16 11:53:25,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:25,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-16 11:53:25,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-16 11:53:25,054 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 306 [2022-09-16 11:53:25,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 306 transitions, 957 flow. Second operand has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 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 11:53:25,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:25,056 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 306 [2022-09-16 11:53:25,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:31,395 INFO L130 PetriNetUnfolder]: 13609/46600 cut-off events. [2022-09-16 11:53:31,395 INFO L131 PetriNetUnfolder]: For 1217/1308 co-relation queries the response was YES. [2022-09-16 11:53:31,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67560 conditions, 46600 events. 13609/46600 cut-off events. For 1217/1308 co-relation queries the response was YES. Maximal size of possible extension queue 1960. Compared 665276 event pairs, 10633 based on Foata normal form. 0/30206 useless extension candidates. Maximal degree in co-relation 57909. Up to 14321 conditions per place. [2022-09-16 11:53:31,806 INFO L137 encePairwiseOnDemand]: 295/306 looper letters, 140 selfloop transitions, 22 changer transitions 0/371 dead transitions. [2022-09-16 11:53:31,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 371 transitions, 1516 flow [2022-09-16 11:53:31,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-16 11:53:31,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-16 11:53:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 2358 transitions. [2022-09-16 11:53:31,811 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7705882352941177 [2022-09-16 11:53:31,811 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 2358 transitions. [2022-09-16 11:53:31,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 2358 transitions. [2022-09-16 11:53:31,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:31,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 2358 transitions. [2022-09-16 11:53:31,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 235.8) internal successors, (2358), 10 states have internal predecessors, (2358), 0 states have call successors, (0), 0 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 11:53:31,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 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 11:53:31,819 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 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 11:53:31,819 INFO L175 Difference]: Start difference. First operand has 320 places, 306 transitions, 957 flow. Second operand 10 states and 2358 transitions. [2022-09-16 11:53:31,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 371 transitions, 1516 flow [2022-09-16 11:53:31,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 371 transitions, 1409 flow, removed 13 selfloop flow, removed 15 redundant places. [2022-09-16 11:53:31,825 INFO L231 Difference]: Finished difference. Result has 317 places, 308 transitions, 936 flow [2022-09-16 11:53:31,825 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=874, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=936, PETRI_PLACES=317, PETRI_TRANSITIONS=308} [2022-09-16 11:53:31,826 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, 49 predicate places. [2022-09-16 11:53:31,826 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 308 transitions, 936 flow [2022-09-16 11:53:31,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 228.57142857142858) internal successors, (1600), 7 states have internal predecessors, (1600), 0 states have call successors, (0), 0 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 11:53:31,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:31,827 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:31,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-16 11:53:31,827 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:31,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:31,827 INFO L85 PathProgramCache]: Analyzing trace with hash 32746343, now seen corresponding path program 1 times [2022-09-16 11:53:31,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:31,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521445943] [2022-09-16 11:53:31,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:31,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:31,927 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 11:53:31,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:31,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521445943] [2022-09-16 11:53:31,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521445943] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:31,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:31,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-09-16 11:53:31,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785210613] [2022-09-16 11:53:31,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:31,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-09-16 11:53:31,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:31,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-09-16 11:53:31,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-09-16 11:53:31,930 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 306 [2022-09-16 11:53:31,931 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 308 transitions, 936 flow. Second operand has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:31,931 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:31,932 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 306 [2022-09-16 11:53:31,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:39,154 INFO L130 PetriNetUnfolder]: 18558/56974 cut-off events. [2022-09-16 11:53:39,154 INFO L131 PetriNetUnfolder]: For 3287/3497 co-relation queries the response was YES. [2022-09-16 11:53:39,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86403 conditions, 56974 events. 18558/56974 cut-off events. For 3287/3497 co-relation queries the response was YES. Maximal size of possible extension queue 1713. Compared 780374 event pairs, 14084 based on Foata normal form. 210/38109 useless extension candidates. Maximal degree in co-relation 81305. Up to 24078 conditions per place. [2022-09-16 11:53:39,955 INFO L137 encePairwiseOnDemand]: 292/306 looper letters, 158 selfloop transitions, 25 changer transitions 2/375 dead transitions. [2022-09-16 11:53:39,955 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 375 transitions, 1521 flow [2022-09-16 11:53:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-16 11:53:39,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-16 11:53:39,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2666 transitions. [2022-09-16 11:53:39,960 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6701860231271995 [2022-09-16 11:53:39,961 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2666 transitions. [2022-09-16 11:53:39,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2666 transitions. [2022-09-16 11:53:39,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:39,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2666 transitions. [2022-09-16 11:53:39,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 205.07692307692307) internal successors, (2666), 13 states have internal predecessors, (2666), 0 states have call successors, (0), 0 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 11:53:39,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 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 11:53:39,971 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 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 11:53:39,971 INFO L175 Difference]: Start difference. First operand has 317 places, 308 transitions, 936 flow. Second operand 13 states and 2666 transitions. [2022-09-16 11:53:39,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 375 transitions, 1521 flow [2022-09-16 11:53:39,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 375 transitions, 1497 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-16 11:53:39,982 INFO L231 Difference]: Finished difference. Result has 330 places, 312 transitions, 992 flow [2022-09-16 11:53:39,983 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=992, PETRI_PLACES=330, PETRI_TRANSITIONS=312} [2022-09-16 11:53:39,984 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, 62 predicate places. [2022-09-16 11:53:39,984 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 312 transitions, 992 flow [2022-09-16 11:53:39,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 199.3) internal successors, (1993), 10 states have internal predecessors, (1993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-16 11:53:39,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:39,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:39,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-16 11:53:39,985 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:39,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash -570715185, now seen corresponding path program 1 times [2022-09-16 11:53:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:39,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828485865] [2022-09-16 11:53:39,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:39,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:53:40,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828485865] [2022-09-16 11:53:40,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828485865] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:40,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:40,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-16 11:53:40,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015723216] [2022-09-16 11:53:40,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:40,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-16 11:53:40,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:40,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-16 11:53:40,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-16 11:53:40,088 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 259 out of 306 [2022-09-16 11:53:40,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 312 transitions, 992 flow. Second operand has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 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 11:53:40,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:40,089 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 259 of 306 [2022-09-16 11:53:40,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-16 11:53:43,618 INFO L130 PetriNetUnfolder]: 5643/26069 cut-off events. [2022-09-16 11:53:43,618 INFO L131 PetriNetUnfolder]: For 908/908 co-relation queries the response was YES. [2022-09-16 11:53:43,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35702 conditions, 26069 events. 5643/26069 cut-off events. For 908/908 co-relation queries the response was YES. Maximal size of possible extension queue 1029. Compared 357784 event pairs, 1743 based on Foata normal form. 0/17557 useless extension candidates. Maximal degree in co-relation 34101. Up to 5076 conditions per place. [2022-09-16 11:53:43,837 INFO L137 encePairwiseOnDemand]: 302/306 looper letters, 36 selfloop transitions, 2 changer transitions 0/329 dead transitions. [2022-09-16 11:53:43,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 329 transitions, 1107 flow [2022-09-16 11:53:43,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-16 11:53:43,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-16 11:53:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 817 transitions. [2022-09-16 11:53:43,839 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8899782135076253 [2022-09-16 11:53:43,839 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 817 transitions. [2022-09-16 11:53:43,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 817 transitions. [2022-09-16 11:53:43,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-16 11:53:43,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 817 transitions. [2022-09-16 11:53:43,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 272.3333333333333) internal successors, (817), 3 states have internal predecessors, (817), 0 states have call successors, (0), 0 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 11:53:43,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 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 11:53:43,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 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 11:53:43,851 INFO L175 Difference]: Start difference. First operand has 330 places, 312 transitions, 992 flow. Second operand 3 states and 817 transitions. [2022-09-16 11:53:43,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 329 transitions, 1107 flow [2022-09-16 11:53:43,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 325 places, 329 transitions, 1068 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-09-16 11:53:43,859 INFO L231 Difference]: Finished difference. Result has 326 places, 313 transitions, 967 flow [2022-09-16 11:53:43,859 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=967, PETRI_PLACES=326, PETRI_TRANSITIONS=313} [2022-09-16 11:53:43,860 INFO L287 CegarLoopForPetriNet]: 268 programPoint places, 58 predicate places. [2022-09-16 11:53:43,860 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 313 transitions, 967 flow [2022-09-16 11:53:43,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 260.0) internal successors, (780), 3 states have internal predecessors, (780), 0 states have call successors, (0), 0 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 11:53:43,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-16 11:53:43,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:53:43,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-16 11:53:43,860 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 64 more)] === [2022-09-16 11:53:43,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-16 11:53:43,861 INFO L85 PathProgramCache]: Analyzing trace with hash -570715189, now seen corresponding path program 1 times [2022-09-16 11:53:43,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-16 11:53:43,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838716199] [2022-09-16 11:53:43,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-16 11:53:43,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-16 11:53:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-16 11:53:43,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-16 11:53:43,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-16 11:53:43,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838716199] [2022-09-16 11:53:43,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838716199] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-16 11:53:43,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-16 11:53:43,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-16 11:53:43,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479900517] [2022-09-16 11:53:43,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-16 11:53:43,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-16 11:53:43,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-16 11:53:43,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-16 11:53:43,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-09-16 11:53:43,997 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 199 out of 306 [2022-09-16 11:53:43,998 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 313 transitions, 967 flow. Second operand has 12 states, 12 states have (on average 202.41666666666666) internal successors, (2429), 12 states have internal predecessors, (2429), 0 states have call successors, (0), 0 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 11:53:43,998 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-16 11:53:43,998 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 199 of 306 [2022-09-16 11:53:43,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand