/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 10:10:07,746 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 10:10:07,747 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 10:10:07,775 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 10:10:07,775 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 10:10:07,777 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 10:10:07,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 10:10:07,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 10:10:07,782 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 10:10:07,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 10:10:07,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 10:10:07,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 10:10:07,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 10:10:07,790 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 10:10:07,791 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 10:10:07,791 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 10:10:07,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 10:10:07,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 10:10:07,794 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 10:10:07,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 10:10:07,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 10:10:07,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 10:10:07,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 10:10:07,800 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 10:10:07,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 10:10:07,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 10:10:07,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 10:10:07,807 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 10:10:07,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 10:10:07,808 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 10:10:07,808 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 10:10:07,809 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 10:10:07,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 10:10:07,810 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 10:10:07,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 10:10:07,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 10:10:07,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 10:10:07,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 10:10:07,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 10:10:07,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 10:10:07,812 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 10:10:07,813 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-VariableLbe.epf [2023-01-28 10:10:07,834 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 10:10:07,834 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 10:10:07,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 10:10:07,835 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 10:10:07,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 10:10:07,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 10:10:07,835 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 10:10:07,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 10:10:07,836 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 10:10:07,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 10:10:07,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 10:10:07,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 10:10:07,836 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 10:10:07,836 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 10:10:07,837 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:10:07,837 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 10:10:07,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 10:10:07,838 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 10:10:07,838 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 10:10:07,838 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 10:10:07,838 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 10:10:07,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 10:10:07,838 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 10:10:08,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 10:10:08,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 10:10:08,042 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 10:10:08,043 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 10:10:08,043 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 10:10:08,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-01-28 10:10:09,049 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 10:10:09,255 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 10:10:09,256 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-dot-product.wvr.c [2023-01-28 10:10:09,261 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27440ca2c/255712ccea9b4eca9002cc2946f2984e/FLAG1f56e3f24 [2023-01-28 10:10:09,273 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27440ca2c/255712ccea9b4eca9002cc2946f2984e [2023-01-28 10:10:09,275 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 10:10:09,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 10:10:09,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 10:10:09,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 10:10:09,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 10:10:09,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@594da705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09, skipping insertion in model container [2023-01-28 10:10:09,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 10:10:09,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 10:10:09,439 WARN L247 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] [2023-01-28 10:10:09,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:10:09,455 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 10:10:09,486 WARN L247 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] [2023-01-28 10:10:09,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 10:10:09,497 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:10:09,498 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 10:10:09,502 INFO L208 MainTranslator]: Completed translation [2023-01-28 10:10:09,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09 WrapperNode [2023-01-28 10:10:09,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 10:10:09,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 10:10:09,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 10:10:09,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 10:10:09,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,552 INFO L138 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 22, statements flattened = 280 [2023-01-28 10:10:09,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 10:10:09,553 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 10:10:09,553 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 10:10:09,553 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 10:10:09,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,588 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,589 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 10:10:09,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 10:10:09,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 10:10:09,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 10:10:09,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (1/1) ... [2023-01-28 10:10:09,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 10:10:09,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:09,616 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) [2023-01-28 10:10:09,625 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 [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 10:10:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 10:10:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 10:10:09,640 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 10:10:09,640 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 10:10:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 10:10:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 10:10:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 10:10:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 10:10:09,641 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 10:10:09,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 10:10:09,642 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 10:10:09,760 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 10:10:09,761 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 10:10:10,032 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 10:10:10,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 10:10:10,132 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-01-28 10:10:10,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:10:10 BoogieIcfgContainer [2023-01-28 10:10:10,134 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 10:10:10,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 10:10:10,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 10:10:10,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 10:10:10,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 10:10:09" (1/3) ... [2023-01-28 10:10:10,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be72ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:10:10, skipping insertion in model container [2023-01-28 10:10:10,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 10:10:09" (2/3) ... [2023-01-28 10:10:10,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2be72ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 10:10:10, skipping insertion in model container [2023-01-28 10:10:10,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 10:10:10" (3/3) ... [2023-01-28 10:10:10,139 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product.wvr.c [2023-01-28 10:10:10,150 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 10:10:10,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 10:10:10,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 10:10:10,268 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 10:10:10,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 239 transitions, 502 flow [2023-01-28 10:10:10,371 INFO L130 PetriNetUnfolder]: 25/236 cut-off events. [2023-01-28 10:10:10,371 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:10:10,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 236 events. 25/236 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 310 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 182. Up to 2 conditions per place. [2023-01-28 10:10:10,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 239 transitions, 502 flow [2023-01-28 10:10:10,383 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 211 places, 226 transitions, 470 flow [2023-01-28 10:10:10,385 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 10:10:10,394 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 226 transitions, 470 flow [2023-01-28 10:10:10,396 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 226 transitions, 470 flow [2023-01-28 10:10:10,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 211 places, 226 transitions, 470 flow [2023-01-28 10:10:10,446 INFO L130 PetriNetUnfolder]: 25/226 cut-off events. [2023-01-28 10:10:10,446 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:10:10,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 226 events. 25/226 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 307 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 182. Up to 2 conditions per place. [2023-01-28 10:10:10,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 6720 [2023-01-28 10:10:15,373 INFO L134 LiptonReduction]: Checked pairs total: 7402 [2023-01-28 10:10:15,373 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-01-28 10:10:15,397 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 10:10:15,405 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;@347f0305, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 10:10:15,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 10:10:15,411 INFO L130 PetriNetUnfolder]: 8/33 cut-off events. [2023-01-28 10:10:15,411 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 10:10:15,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:15,412 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] [2023-01-28 10:10:15,412 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:15,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:15,415 INFO L85 PathProgramCache]: Analyzing trace with hash -699137499, now seen corresponding path program 1 times [2023-01-28 10:10:15,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:15,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594171697] [2023-01-28 10:10:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:10:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594171697] [2023-01-28 10:10:15,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594171697] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:15,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:15,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:10:15,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738649938] [2023-01-28 10:10:15,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:15,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 10:10:15,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:15,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 10:10:15,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 10:10:15,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 475 [2023-01-28 10:10:15,799 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:15,799 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:15,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 475 [2023-01-28 10:10:15,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:15,968 INFO L130 PetriNetUnfolder]: 1162/1537 cut-off events. [2023-01-28 10:10:15,969 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-01-28 10:10:15,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3168 conditions, 1537 events. 1162/1537 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5522 event pairs, 394 based on Foata normal form. 0/1016 useless extension candidates. Maximal degree in co-relation 2710. Up to 899 conditions per place. [2023-01-28 10:10:15,978 INFO L137 encePairwiseOnDemand]: 470/475 looper letters, 44 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-01-28 10:10:15,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 50 transitions, 220 flow [2023-01-28 10:10:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 10:10:15,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 10:10:15,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 829 transitions. [2023-01-28 10:10:15,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4363157894736842 [2023-01-28 10:10:15,994 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 829 transitions. [2023-01-28 10:10:15,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 829 transitions. [2023-01-28 10:10:15,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:15,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 829 transitions. [2023-01-28 10:10:16,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 207.25) internal successors, (829), 4 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,010 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 475.0) internal successors, (2375), 5 states have internal predecessors, (2375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,012 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 86 flow. Second operand 4 states and 829 transitions. [2023-01-28 10:10:16,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 50 transitions, 220 flow [2023-01-28 10:10:16,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 50 transitions, 204 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 10:10:16,018 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 95 flow [2023-01-28 10:10:16,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-01-28 10:10:16,022 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-01-28 10:10:16,022 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 95 flow [2023-01-28 10:10:16,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 199.75) internal successors, (799), 4 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:16,023 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] [2023-01-28 10:10:16,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 10:10:16,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:16,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:16,030 INFO L85 PathProgramCache]: Analyzing trace with hash -120965922, now seen corresponding path program 1 times [2023-01-28 10:10:16,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:16,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212870030] [2023-01-28 10:10:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:16,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:16,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 10:10:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:16,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212870030] [2023-01-28 10:10:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212870030] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:16,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:16,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 10:10:16,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693424304] [2023-01-28 10:10:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:16,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 10:10:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:16,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 10:10:16,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 10:10:16,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 209 out of 475 [2023-01-28 10:10:16,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:16,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 209 of 475 [2023-01-28 10:10:16,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:16,483 INFO L130 PetriNetUnfolder]: 1930/2561 cut-off events. [2023-01-28 10:10:16,483 INFO L131 PetriNetUnfolder]: For 392/570 co-relation queries the response was YES. [2023-01-28 10:10:16,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5940 conditions, 2561 events. 1930/2561 cut-off events. For 392/570 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 10098 event pairs, 519 based on Foata normal form. 179/2075 useless extension candidates. Maximal degree in co-relation 1614. Up to 1436 conditions per place. [2023-01-28 10:10:16,494 INFO L137 encePairwiseOnDemand]: 470/475 looper letters, 52 selfloop transitions, 4 changer transitions 1/60 dead transitions. [2023-01-28 10:10:16,494 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 60 transitions, 276 flow [2023-01-28 10:10:16,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 10:10:16,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 10:10:16,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 683 transitions. [2023-01-28 10:10:16,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4792982456140351 [2023-01-28 10:10:16,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 683 transitions. [2023-01-28 10:10:16,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 683 transitions. [2023-01-28 10:10:16,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:16,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 683 transitions. [2023-01-28 10:10:16,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,500 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 475.0) internal successors, (1900), 4 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,500 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 95 flow. Second operand 3 states and 683 transitions. [2023-01-28 10:10:16,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 60 transitions, 276 flow [2023-01-28 10:10:16,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 60 transitions, 270 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:10:16,506 INFO L231 Difference]: Finished difference. Result has 36 places, 38 transitions, 117 flow [2023-01-28 10:10:16,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=36, PETRI_TRANSITIONS=38} [2023-01-28 10:10:16,506 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-01-28 10:10:16,507 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 38 transitions, 117 flow [2023-01-28 10:10:16,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.66666666666666) internal successors, (647), 3 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:16,507 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] [2023-01-28 10:10:16,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 10:10:16,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:16,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:16,508 INFO L85 PathProgramCache]: Analyzing trace with hash 568274986, now seen corresponding path program 1 times [2023-01-28 10:10:16,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:16,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429164426] [2023-01-28 10:10:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:16,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:16,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:10:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429164426] [2023-01-28 10:10:16,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429164426] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:16,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:16,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:10:16,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652126684] [2023-01-28 10:10:16,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:16,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:10:16,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:16,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:10:16,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:10:16,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-01-28 10:10:16,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 38 transitions, 117 flow. Second operand has 5 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:16,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:16,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-01-28 10:10:16,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:17,144 INFO L130 PetriNetUnfolder]: 4453/5922 cut-off events. [2023-01-28 10:10:17,144 INFO L131 PetriNetUnfolder]: For 1504/1504 co-relation queries the response was YES. [2023-01-28 10:10:17,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14415 conditions, 5922 events. 4453/5922 cut-off events. For 1504/1504 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 26577 event pairs, 2338 based on Foata normal form. 122/4506 useless extension candidates. Maximal degree in co-relation 6160. Up to 3038 conditions per place. [2023-01-28 10:10:17,165 INFO L137 encePairwiseOnDemand]: 469/475 looper letters, 78 selfloop transitions, 6 changer transitions 0/86 dead transitions. [2023-01-28 10:10:17,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 86 transitions, 426 flow [2023-01-28 10:10:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:10:17,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:10:17,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2023-01-28 10:10:17,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3646315789473684 [2023-01-28 10:10:17,167 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2023-01-28 10:10:17,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2023-01-28 10:10:17,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:17,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2023-01-28 10:10:17,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:17,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:17,172 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:17,172 INFO L175 Difference]: Start difference. First operand has 36 places, 38 transitions, 117 flow. Second operand 5 states and 866 transitions. [2023-01-28 10:10:17,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 86 transitions, 426 flow [2023-01-28 10:10:17,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 86 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 10:10:17,180 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 169 flow [2023-01-28 10:10:17,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-01-28 10:10:17,181 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 6 predicate places. [2023-01-28 10:10:17,183 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 169 flow [2023-01-28 10:10:17,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.4) internal successors, (812), 5 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:17,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:17,184 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] [2023-01-28 10:10:17,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 10:10:17,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:17,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:17,184 INFO L85 PathProgramCache]: Analyzing trace with hash 637640884, now seen corresponding path program 1 times [2023-01-28 10:10:17,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:17,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029267678] [2023-01-28 10:10:17,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:17,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:17,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:10:17,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029267678] [2023-01-28 10:10:17,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029267678] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:17,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260481894] [2023-01-28 10:10:17,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:17,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:17,373 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) [2023-01-28 10:10:17,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 10:10:17,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:17,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-28 10:10:17,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:17,531 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:10:17,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:17,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-01-28 10:10:17,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:10:17,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260481894] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:17,603 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:17,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-01-28 10:10:17,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800266428] [2023-01-28 10:10:17,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:17,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 10:10:17,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:17,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 10:10:17,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-01-28 10:10:17,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-01-28 10:10:17,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 169 flow. Second operand has 13 states, 13 states have (on average 160.6153846153846) internal successors, (2088), 13 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:17,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:17,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-01-28 10:10:17,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:18,248 INFO L130 PetriNetUnfolder]: 6603/8803 cut-off events. [2023-01-28 10:10:18,248 INFO L131 PetriNetUnfolder]: For 3446/3446 co-relation queries the response was YES. [2023-01-28 10:10:18,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22508 conditions, 8803 events. 6603/8803 cut-off events. For 3446/3446 co-relation queries the response was YES. Maximal size of possible extension queue 451. Compared 42366 event pairs, 3381 based on Foata normal form. 122/6628 useless extension candidates. Maximal degree in co-relation 14940. Up to 3038 conditions per place. [2023-01-28 10:10:18,290 INFO L137 encePairwiseOnDemand]: 469/475 looper letters, 121 selfloop transitions, 11 changer transitions 0/134 dead transitions. [2023-01-28 10:10:18,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 134 transitions, 697 flow [2023-01-28 10:10:18,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:10:18,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:10:18,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1383 transitions. [2023-01-28 10:10:18,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36394736842105263 [2023-01-28 10:10:18,293 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1383 transitions. [2023-01-28 10:10:18,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1383 transitions. [2023-01-28 10:10:18,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:18,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1383 transitions. [2023-01-28 10:10:18,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.875) internal successors, (1383), 8 states have internal predecessors, (1383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:18,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:18,302 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:18,302 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 169 flow. Second operand 8 states and 1383 transitions. [2023-01-28 10:10:18,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 134 transitions, 697 flow [2023-01-28 10:10:18,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 134 transitions, 693 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 10:10:18,317 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 241 flow [2023-01-28 10:10:18,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=241, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-28 10:10:18,319 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 15 predicate places. [2023-01-28 10:10:18,319 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 241 flow [2023-01-28 10:10:18,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 160.6153846153846) internal successors, (2088), 13 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:18,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:18,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:10:18,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 10:10:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:18,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:18,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash -963449330, now seen corresponding path program 2 times [2023-01-28 10:10:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:18,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373174222] [2023-01-28 10:10:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:18,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:10:18,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373174222] [2023-01-28 10:10:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373174222] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 10:10:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535934298] [2023-01-28 10:10:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:18,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:10:18,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:10:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:10:18,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 475 [2023-01-28 10:10:18,685 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:18,685 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:18,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 475 [2023-01-28 10:10:18,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:19,240 INFO L130 PetriNetUnfolder]: 6604/8808 cut-off events. [2023-01-28 10:10:19,240 INFO L131 PetriNetUnfolder]: For 5547/5547 co-relation queries the response was YES. [2023-01-28 10:10:19,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24128 conditions, 8808 events. 6604/8808 cut-off events. For 5547/5547 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 42154 event pairs, 3131 based on Foata normal form. 3/6504 useless extension candidates. Maximal degree in co-relation 14672. Up to 7287 conditions per place. [2023-01-28 10:10:19,281 INFO L137 encePairwiseOnDemand]: 470/475 looper letters, 61 selfloop transitions, 3 changer transitions 4/70 dead transitions. [2023-01-28 10:10:19,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 70 transitions, 447 flow [2023-01-28 10:10:19,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:10:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:10:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 916 transitions. [2023-01-28 10:10:19,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3856842105263158 [2023-01-28 10:10:19,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 916 transitions. [2023-01-28 10:10:19,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 916 transitions. [2023-01-28 10:10:19,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:19,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 916 transitions. [2023-01-28 10:10:19,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.2) internal successors, (916), 5 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:19,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:19,288 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:19,288 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 241 flow. Second operand 5 states and 916 transitions. [2023-01-28 10:10:19,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 70 transitions, 447 flow [2023-01-28 10:10:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 415 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-28 10:10:19,311 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 237 flow [2023-01-28 10:10:19,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=237, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-01-28 10:10:19,313 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2023-01-28 10:10:19,313 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 237 flow [2023-01-28 10:10:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 177.6) internal successors, (888), 5 states have internal predecessors, (888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:19,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:19,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:10:19,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 10:10:19,314 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:19,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:19,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1429325870, now seen corresponding path program 1 times [2023-01-28 10:10:19,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:19,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098528702] [2023-01-28 10:10:19,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:19,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:19,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:19,407 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:10:19,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:19,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098528702] [2023-01-28 10:10:19,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098528702] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:19,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111953260] [2023-01-28 10:10:19,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:19,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:19,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:19,410 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) [2023-01-28 10:10:19,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 10:10:19,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:19,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-28 10:10:19,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:10:19,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 10:10:19,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111953260] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:19,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 10:10:19,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-01-28 10:10:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638176951] [2023-01-28 10:10:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:19,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:10:19,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:19,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:10:19,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-28 10:10:19,562 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 475 [2023-01-28 10:10:19,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 237 flow. Second operand has 5 states, 5 states have (on average 181.8) internal successors, (909), 5 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:19,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:19,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 475 [2023-01-28 10:10:19,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:20,139 INFO L130 PetriNetUnfolder]: 5990/8152 cut-off events. [2023-01-28 10:10:20,140 INFO L131 PetriNetUnfolder]: For 8947/9589 co-relation queries the response was YES. [2023-01-28 10:10:20,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22769 conditions, 8152 events. 5990/8152 cut-off events. For 8947/9589 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 41270 event pairs, 1923 based on Foata normal form. 642/6955 useless extension candidates. Maximal degree in co-relation 22740. Up to 4077 conditions per place. [2023-01-28 10:10:20,179 INFO L137 encePairwiseOnDemand]: 469/475 looper letters, 66 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2023-01-28 10:10:20,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 509 flow [2023-01-28 10:10:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:10:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:10:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 934 transitions. [2023-01-28 10:10:20,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932631578947368 [2023-01-28 10:10:20,182 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 934 transitions. [2023-01-28 10:10:20,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 934 transitions. [2023-01-28 10:10:20,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:20,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 934 transitions. [2023-01-28 10:10:20,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.8) internal successors, (934), 5 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:20,186 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:20,186 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:20,186 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 237 flow. Second operand 5 states and 934 transitions. [2023-01-28 10:10:20,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 509 flow [2023-01-28 10:10:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 73 transitions, 497 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-01-28 10:10:20,215 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 249 flow [2023-01-28 10:10:20,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=249, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-01-28 10:10:20,216 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-01-28 10:10:20,216 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 249 flow [2023-01-28 10:10:20,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 181.8) internal successors, (909), 5 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:20,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:20,217 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] [2023-01-28 10:10:20,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 10:10:20,422 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,SelfDestructingSolverStorable5 [2023-01-28 10:10:20,422 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:20,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:20,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1999844878, now seen corresponding path program 1 times [2023-01-28 10:10:20,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:20,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631200607] [2023-01-28 10:10:20,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:20,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:20,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:20,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631200607] [2023-01-28 10:10:20,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631200607] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:20,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-28 10:10:20,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596977873] [2023-01-28 10:10:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:20,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 10:10:20,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:20,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 10:10:20,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 10:10:20,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-01-28 10:10:20,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 249 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:20,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:20,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-01-28 10:10:20,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:21,132 INFO L130 PetriNetUnfolder]: 6264/8556 cut-off events. [2023-01-28 10:10:21,132 INFO L131 PetriNetUnfolder]: For 9787/10463 co-relation queries the response was YES. [2023-01-28 10:10:21,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26431 conditions, 8556 events. 6264/8556 cut-off events. For 9787/10463 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 42223 event pairs, 3638 based on Foata normal form. 779/8085 useless extension candidates. Maximal degree in co-relation 26401. Up to 5469 conditions per place. [2023-01-28 10:10:21,178 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 83 selfloop transitions, 8 changer transitions 0/93 dead transitions. [2023-01-28 10:10:21,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 585 flow [2023-01-28 10:10:21,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 10:10:21,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 10:10:21,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 865 transitions. [2023-01-28 10:10:21,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3642105263157895 [2023-01-28 10:10:21,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 865 transitions. [2023-01-28 10:10:21,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 865 transitions. [2023-01-28 10:10:21,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:21,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 865 transitions. [2023-01-28 10:10:21,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.0) internal successors, (865), 5 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:21,184 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:21,185 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 475.0) internal successors, (2850), 6 states have internal predecessors, (2850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:21,185 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 249 flow. Second operand 5 states and 865 transitions. [2023-01-28 10:10:21,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 585 flow [2023-01-28 10:10:21,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 93 transitions, 575 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-28 10:10:21,209 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 300 flow [2023-01-28 10:10:21,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-01-28 10:10:21,210 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-01-28 10:10:21,210 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 300 flow [2023-01-28 10:10:21,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:21,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:21,210 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] [2023-01-28 10:10:21,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 10:10:21,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:21,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:21,211 INFO L85 PathProgramCache]: Analyzing trace with hash 800859454, now seen corresponding path program 2 times [2023-01-28 10:10:21,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:21,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892897961] [2023-01-28 10:10:21,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:21,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:21,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:21,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:21,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:21,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892897961] [2023-01-28 10:10:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892897961] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-28 10:10:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764432854] [2023-01-28 10:10:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:21,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 10:10:21,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 10:10:21,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-01-28 10:10:21,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 475 [2023-01-28 10:10:21,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 300 flow. Second operand has 8 states, 8 states have (on average 153.25) internal successors, (1226), 8 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:21,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:21,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 475 [2023-01-28 10:10:21,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:22,028 INFO L130 PetriNetUnfolder]: 6520/8911 cut-off events. [2023-01-28 10:10:22,029 INFO L131 PetriNetUnfolder]: For 12687/13385 co-relation queries the response was YES. [2023-01-28 10:10:22,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28906 conditions, 8911 events. 6520/8911 cut-off events. For 12687/13385 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 44134 event pairs, 3696 based on Foata normal form. 788/8394 useless extension candidates. Maximal degree in co-relation 28874. Up to 5466 conditions per place. [2023-01-28 10:10:22,087 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 83 selfloop transitions, 9 changer transitions 0/94 dead transitions. [2023-01-28 10:10:22,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 94 transitions, 631 flow [2023-01-28 10:10:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:10:22,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:10:22,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 975 transitions. [2023-01-28 10:10:22,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34210526315789475 [2023-01-28 10:10:22,090 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 975 transitions. [2023-01-28 10:10:22,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 975 transitions. [2023-01-28 10:10:22,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:22,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 975 transitions. [2023-01-28 10:10:22,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:22,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:22,094 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:22,094 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 300 flow. Second operand 6 states and 975 transitions. [2023-01-28 10:10:22,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 94 transitions, 631 flow [2023-01-28 10:10:22,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 626 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 10:10:22,117 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 329 flow [2023-01-28 10:10:22,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=295, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=329, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-01-28 10:10:22,118 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 27 predicate places. [2023-01-28 10:10:22,118 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 329 flow [2023-01-28 10:10:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 153.25) internal successors, (1226), 8 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:22,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:22,119 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] [2023-01-28 10:10:22,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-28 10:10:22,119 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:22,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:22,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1628528424, now seen corresponding path program 3 times [2023-01-28 10:10:22,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:22,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508596791] [2023-01-28 10:10:22,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:22,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:22,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:22,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508596791] [2023-01-28 10:10:22,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508596791] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:10:22,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 10:10:22,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-28 10:10:22,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518118656] [2023-01-28 10:10:22,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:10:22,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 10:10:22,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:22,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 10:10:22,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-28 10:10:22,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 475 [2023-01-28 10:10:22,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 150.71428571428572) internal successors, (1055), 7 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:22,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:22,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 475 [2023-01-28 10:10:22,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:23,007 INFO L130 PetriNetUnfolder]: 5942/8166 cut-off events. [2023-01-28 10:10:23,007 INFO L131 PetriNetUnfolder]: For 15503/16163 co-relation queries the response was YES. [2023-01-28 10:10:23,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27660 conditions, 8166 events. 5942/8166 cut-off events. For 15503/16163 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 40226 event pairs, 3407 based on Foata normal form. 750/7738 useless extension candidates. Maximal degree in co-relation 27626. Up to 5466 conditions per place. [2023-01-28 10:10:23,048 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 81 selfloop transitions, 9 changer transitions 0/92 dead transitions. [2023-01-28 10:10:23,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 92 transitions, 643 flow [2023-01-28 10:10:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 10:10:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 10:10:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 954 transitions. [2023-01-28 10:10:23,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33473684210526317 [2023-01-28 10:10:23,051 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 954 transitions. [2023-01-28 10:10:23,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 954 transitions. [2023-01-28 10:10:23,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:23,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 954 transitions. [2023-01-28 10:10:23,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 159.0) internal successors, (954), 6 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) [2023-01-28 10:10:23,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:23,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 475.0) internal successors, (3325), 7 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:23,057 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 329 flow. Second operand 6 states and 954 transitions. [2023-01-28 10:10:23,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 92 transitions, 643 flow [2023-01-28 10:10:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 92 transitions, 630 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 10:10:23,080 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 352 flow [2023-01-28 10:10:23,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=352, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2023-01-28 10:10:23,080 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-01-28 10:10:23,080 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 352 flow [2023-01-28 10:10:23,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.71428571428572) internal successors, (1055), 7 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:23,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:23,081 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] [2023-01-28 10:10:23,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-28 10:10:23,081 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:23,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:23,081 INFO L85 PathProgramCache]: Analyzing trace with hash -541050982, now seen corresponding path program 1 times [2023-01-28 10:10:23,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:23,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356242936] [2023-01-28 10:10:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:23,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:23,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356242936] [2023-01-28 10:10:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356242936] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:23,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489915082] [2023-01-28 10:10:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:23,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:23,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:23,195 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) [2023-01-28 10:10:23,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 10:10:23,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:23,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 10:10:23,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:23,371 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:23,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:23,397 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2023-01-28 10:10:23,429 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:23,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489915082] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:23,430 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:23,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 10:10:23,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365453711] [2023-01-28 10:10:23,430 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:23,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 10:10:23,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:23,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 10:10:23,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-01-28 10:10:23,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 475 [2023-01-28 10:10:23,434 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 352 flow. Second operand has 12 states, 12 states have (on average 161.41666666666666) internal successors, (1937), 12 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:23,434 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:23,434 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 475 [2023-01-28 10:10:23,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:24,142 INFO L130 PetriNetUnfolder]: 6213/8517 cut-off events. [2023-01-28 10:10:24,143 INFO L131 PetriNetUnfolder]: For 19639/20355 co-relation queries the response was YES. [2023-01-28 10:10:24,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30147 conditions, 8517 events. 6213/8517 cut-off events. For 19639/20355 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 42354 event pairs, 3393 based on Foata normal form. 819/8092 useless extension candidates. Maximal degree in co-relation 30112. Up to 2836 conditions per place. [2023-01-28 10:10:24,190 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 117 selfloop transitions, 15 changer transitions 0/134 dead transitions. [2023-01-28 10:10:24,191 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 134 transitions, 917 flow [2023-01-28 10:10:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 10:10:24,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 10:10:24,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1379 transitions. [2023-01-28 10:10:24,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36289473684210527 [2023-01-28 10:10:24,194 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1379 transitions. [2023-01-28 10:10:24,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1379 transitions. [2023-01-28 10:10:24,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:24,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1379 transitions. [2023-01-28 10:10:24,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 172.375) internal successors, (1379), 8 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:24,199 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:24,200 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 475.0) internal successors, (4275), 9 states have internal predecessors, (4275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:24,200 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 352 flow. Second operand 8 states and 1379 transitions. [2023-01-28 10:10:24,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 134 transitions, 917 flow [2023-01-28 10:10:24,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 134 transitions, 894 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-01-28 10:10:24,224 INFO L231 Difference]: Finished difference. Result has 70 places, 62 transitions, 418 flow [2023-01-28 10:10:24,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=418, PETRI_PLACES=70, PETRI_TRANSITIONS=62} [2023-01-28 10:10:24,225 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 34 predicate places. [2023-01-28 10:10:24,225 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 62 transitions, 418 flow [2023-01-28 10:10:24,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 161.41666666666666) internal successors, (1937), 12 states have internal predecessors, (1937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:24,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:24,226 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] [2023-01-28 10:10:24,233 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 10:10:24,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:24,431 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:24,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:24,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2109067920, now seen corresponding path program 2 times [2023-01-28 10:10:24,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:24,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323077450] [2023-01-28 10:10:24,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:24,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:24,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:24,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323077450] [2023-01-28 10:10:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323077450] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:24,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262380611] [2023-01-28 10:10:24,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:10:24,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:24,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:24,653 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:10:24,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 10:10:24,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:10:24,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:10:24,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 10:10:24,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:24,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 202 treesize of output 198 [2023-01-28 10:10:24,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:10:24,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:24,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:24,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2023-01-28 10:10:25,005 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:25,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262380611] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:25,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:25,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-01-28 10:10:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104633216] [2023-01-28 10:10:25,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 10:10:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:25,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 10:10:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-01-28 10:10:25,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 475 [2023-01-28 10:10:25,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 62 transitions, 418 flow. Second operand has 16 states, 16 states have (on average 152.4375) internal successors, (2439), 16 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:25,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:25,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 475 [2023-01-28 10:10:25,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:25,729 INFO L130 PetriNetUnfolder]: 6469/8877 cut-off events. [2023-01-28 10:10:25,729 INFO L131 PetriNetUnfolder]: For 22918/23632 co-relation queries the response was YES. [2023-01-28 10:10:25,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32578 conditions, 8877 events. 6469/8877 cut-off events. For 22918/23632 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 44561 event pairs, 3389 based on Foata normal form. 804/8380 useless extension candidates. Maximal degree in co-relation 32542. Up to 2833 conditions per place. [2023-01-28 10:10:25,765 INFO L137 encePairwiseOnDemand]: 467/475 looper letters, 117 selfloop transitions, 16 changer transitions 0/135 dead transitions. [2023-01-28 10:10:25,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 135 transitions, 972 flow [2023-01-28 10:10:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:10:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:10:25,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1465 transitions. [2023-01-28 10:10:25,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34269005847953216 [2023-01-28 10:10:25,768 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1465 transitions. [2023-01-28 10:10:25,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1465 transitions. [2023-01-28 10:10:25,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:25,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1465 transitions. [2023-01-28 10:10:25,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 162.77777777777777) internal successors, (1465), 9 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:25,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 475.0) internal successors, (4750), 10 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:25,775 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 475.0) internal successors, (4750), 10 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:25,775 INFO L175 Difference]: Start difference. First operand has 70 places, 62 transitions, 418 flow. Second operand 9 states and 1465 transitions. [2023-01-28 10:10:25,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 135 transitions, 972 flow [2023-01-28 10:10:25,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 135 transitions, 941 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-28 10:10:25,807 INFO L231 Difference]: Finished difference. Result has 74 places, 63 transitions, 439 flow [2023-01-28 10:10:25,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=439, PETRI_PLACES=74, PETRI_TRANSITIONS=63} [2023-01-28 10:10:25,808 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2023-01-28 10:10:25,808 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 63 transitions, 439 flow [2023-01-28 10:10:25,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 152.4375) internal successors, (2439), 16 states have internal predecessors, (2439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:25,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:25,808 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] [2023-01-28 10:10:25,814 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 10:10:26,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:26,015 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:26,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:26,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1281398950, now seen corresponding path program 3 times [2023-01-28 10:10:26,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:26,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537719708] [2023-01-28 10:10:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:26,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:26,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537719708] [2023-01-28 10:10:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537719708] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476125035] [2023-01-28 10:10:26,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:10:26,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:26,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:26,238 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:10:26,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 10:10:26,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 10:10:26,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:10:26,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 10:10:26,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:26,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:10:26,591 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:10:26,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:10:26,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 10:10:26,642 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:26,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:26,661 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_430 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_430) c_~A~0.base) (+ c_~A~0.offset (* |c_thread1Thread1of1ForFork2_~i~0#1| 4))) (+ |c_thread1Thread1of1ForFork2_~j~0#1| 1))) is different from false [2023-01-28 10:10:26,704 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 133 [2023-01-28 10:10:26,708 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2023-01-28 10:10:26,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 16 [2023-01-28 10:10:26,801 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 10:10:26,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476125035] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:26,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:26,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-01-28 10:10:26,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696051103] [2023-01-28 10:10:26,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:26,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-01-28 10:10:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-01-28 10:10:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=311, Unknown=2, NotChecked=36, Total=420 [2023-01-28 10:10:26,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 475 [2023-01-28 10:10:26,805 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 63 transitions, 439 flow. Second operand has 21 states, 21 states have (on average 149.42857142857142) internal successors, (3138), 21 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:26,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:26,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 475 [2023-01-28 10:10:26,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:27,561 INFO L130 PetriNetUnfolder]: 5891/8132 cut-off events. [2023-01-28 10:10:27,561 INFO L131 PetriNetUnfolder]: For 25090/25758 co-relation queries the response was YES. [2023-01-28 10:10:27,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30533 conditions, 8132 events. 5891/8132 cut-off events. For 25090/25758 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 40181 event pairs, 3100 based on Foata normal form. 758/7711 useless extension candidates. Maximal degree in co-relation 30495. Up to 2833 conditions per place. [2023-01-28 10:10:27,593 INFO L137 encePairwiseOnDemand]: 468/475 looper letters, 116 selfloop transitions, 16 changer transitions 0/134 dead transitions. [2023-01-28 10:10:27,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 134 transitions, 978 flow [2023-01-28 10:10:27,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-28 10:10:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-28 10:10:27,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1434 transitions. [2023-01-28 10:10:27,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3354385964912281 [2023-01-28 10:10:27,597 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1434 transitions. [2023-01-28 10:10:27,598 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1434 transitions. [2023-01-28 10:10:27,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:27,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1434 transitions. [2023-01-28 10:10:27,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 159.33333333333334) internal successors, (1434), 9 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:27,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 475.0) internal successors, (4750), 10 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:27,604 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 475.0) internal successors, (4750), 10 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:27,604 INFO L175 Difference]: Start difference. First operand has 74 places, 63 transitions, 439 flow. Second operand 9 states and 1434 transitions. [2023-01-28 10:10:27,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 134 transitions, 978 flow [2023-01-28 10:10:27,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 134 transitions, 947 flow, removed 2 selfloop flow, removed 7 redundant places. [2023-01-28 10:10:27,631 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 462 flow [2023-01-28 10:10:27,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=462, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-01-28 10:10:27,632 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 40 predicate places. [2023-01-28 10:10:27,632 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 462 flow [2023-01-28 10:10:27,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 149.42857142857142) internal successors, (3138), 21 states have internal predecessors, (3138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:27,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:27,633 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:10:27,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 10:10:27,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 10:10:27,838 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:27,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:27,838 INFO L85 PathProgramCache]: Analyzing trace with hash -935293517, now seen corresponding path program 1 times [2023-01-28 10:10:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395605317] [2023-01-28 10:10:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:27,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:28,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:10:28,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395605317] [2023-01-28 10:10:28,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395605317] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:28,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419308009] [2023-01-28 10:10:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:28,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:28,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:28,312 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:10:28,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 10:10:28,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:28,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-28 10:10:28,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:28,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 10:10:28,621 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-01-28 10:10:28,709 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:10:28,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:28,765 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_487 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_487) c_~A~0.base) (+ c_~A~0.offset (* 4 c_~M~0))) 1)) is different from false [2023-01-28 10:10:28,771 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:10:28,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 33 [2023-01-28 10:10:28,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2023-01-28 10:10:28,966 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:10:28,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419308009] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:28,966 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:28,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 34 [2023-01-28 10:10:28,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120464726] [2023-01-28 10:10:28,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:28,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 10:10:28,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:28,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 10:10:28,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1017, Unknown=1, NotChecked=64, Total=1190 [2023-01-28 10:10:28,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 475 [2023-01-28 10:10:28,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 462 flow. Second operand has 35 states, 35 states have (on average 137.0) internal successors, (4795), 35 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:28,973 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:28,973 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 475 [2023-01-28 10:10:28,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:34,069 INFO L130 PetriNetUnfolder]: 29858/41055 cut-off events. [2023-01-28 10:10:34,069 INFO L131 PetriNetUnfolder]: For 137690/137690 co-relation queries the response was YES. [2023-01-28 10:10:34,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165913 conditions, 41055 events. 29858/41055 cut-off events. For 137690/137690 co-relation queries the response was YES. Maximal size of possible extension queue 1370. Compared 240635 event pairs, 5463 based on Foata normal form. 168/36833 useless extension candidates. Maximal degree in co-relation 117566. Up to 7003 conditions per place. [2023-01-28 10:10:34,278 INFO L137 encePairwiseOnDemand]: 450/475 looper letters, 516 selfloop transitions, 259 changer transitions 60/835 dead transitions. [2023-01-28 10:10:34,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 835 transitions, 7783 flow [2023-01-28 10:10:34,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-01-28 10:10:34,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-01-28 10:10:34,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5493 transitions. [2023-01-28 10:10:34,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125462304409673 [2023-01-28 10:10:34,288 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5493 transitions. [2023-01-28 10:10:34,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5493 transitions. [2023-01-28 10:10:34,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:34,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5493 transitions. [2023-01-28 10:10:34,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 148.45945945945945) internal successors, (5493), 37 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:34,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 475.0) internal successors, (18050), 38 states have internal predecessors, (18050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:34,313 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 475.0) internal successors, (18050), 38 states have internal predecessors, (18050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:34,313 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 462 flow. Second operand 37 states and 5493 transitions. [2023-01-28 10:10:34,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 835 transitions, 7783 flow [2023-01-28 10:10:34,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 835 transitions, 7393 flow, removed 72 selfloop flow, removed 7 redundant places. [2023-01-28 10:10:34,831 INFO L231 Difference]: Finished difference. Result has 129 places, 332 transitions, 3973 flow [2023-01-28 10:10:34,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3973, PETRI_PLACES=129, PETRI_TRANSITIONS=332} [2023-01-28 10:10:34,832 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 93 predicate places. [2023-01-28 10:10:34,832 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 332 transitions, 3973 flow [2023-01-28 10:10:34,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 137.0) internal successors, (4795), 35 states have internal predecessors, (4795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:34,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:34,833 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:10:34,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 10:10:35,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:35,039 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:35,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash 792253339, now seen corresponding path program 2 times [2023-01-28 10:10:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:35,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461712978] [2023-01-28 10:10:35,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:35,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:10:35,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461712978] [2023-01-28 10:10:35,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461712978] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:35,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171098340] [2023-01-28 10:10:35,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 10:10:35,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:35,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:35,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:10:35,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 10:10:35,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:10:35,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:10:35,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 10:10:35,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:35,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:10:36,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:36,070 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:10:36,071 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 15 [2023-01-28 10:10:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:10:36,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171098340] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:36,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:36,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 29 [2023-01-28 10:10:36,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985211918] [2023-01-28 10:10:36,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:36,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-01-28 10:10:36,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:36,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-01-28 10:10:36,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=772, Unknown=0, NotChecked=0, Total=870 [2023-01-28 10:10:36,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 475 [2023-01-28 10:10:36,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 332 transitions, 3973 flow. Second operand has 30 states, 30 states have (on average 141.3) internal successors, (4239), 30 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:36,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:36,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 475 [2023-01-28 10:10:36,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:10:43,180 INFO L130 PetriNetUnfolder]: 24795/34570 cut-off events. [2023-01-28 10:10:43,180 INFO L131 PetriNetUnfolder]: For 459669/459669 co-relation queries the response was YES. [2023-01-28 10:10:43,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236788 conditions, 34570 events. 24795/34570 cut-off events. For 459669/459669 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 202798 event pairs, 6417 based on Foata normal form. 1389/35959 useless extension candidates. Maximal degree in co-relation 216650. Up to 16319 conditions per place. [2023-01-28 10:10:43,473 INFO L137 encePairwiseOnDemand]: 457/475 looper letters, 686 selfloop transitions, 501 changer transitions 274/1461 dead transitions. [2023-01-28 10:10:43,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1461 transitions, 21227 flow [2023-01-28 10:10:43,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-01-28 10:10:43,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-01-28 10:10:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 8878 transitions. [2023-01-28 10:10:43,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31150877192982457 [2023-01-28 10:10:43,485 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 8878 transitions. [2023-01-28 10:10:43,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 8878 transitions. [2023-01-28 10:10:43,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:10:43,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 8878 transitions. [2023-01-28 10:10:43,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 147.96666666666667) internal successors, (8878), 60 states have internal predecessors, (8878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:43,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 475.0) internal successors, (28975), 61 states have internal predecessors, (28975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:43,515 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 475.0) internal successors, (28975), 61 states have internal predecessors, (28975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:43,516 INFO L175 Difference]: Start difference. First operand has 129 places, 332 transitions, 3973 flow. Second operand 60 states and 8878 transitions. [2023-01-28 10:10:43,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1461 transitions, 21227 flow [2023-01-28 10:10:45,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 1461 transitions, 20524 flow, removed 193 selfloop flow, removed 3 redundant places. [2023-01-28 10:10:45,990 INFO L231 Difference]: Finished difference. Result has 230 places, 746 transitions, 10979 flow [2023-01-28 10:10:45,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=3677, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=10979, PETRI_PLACES=230, PETRI_TRANSITIONS=746} [2023-01-28 10:10:45,990 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 194 predicate places. [2023-01-28 10:10:45,990 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 746 transitions, 10979 flow [2023-01-28 10:10:45,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 141.3) internal successors, (4239), 30 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:10:45,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:10:45,991 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:10:45,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-01-28 10:10:46,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:46,196 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:10:46,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:10:46,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1301806927, now seen corresponding path program 3 times [2023-01-28 10:10:46,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:10:46,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868613103] [2023-01-28 10:10:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:10:46,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:10:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:10:47,122 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 10:10:47,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:10:47,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868613103] [2023-01-28 10:10:47,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868613103] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:10:47,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728466455] [2023-01-28 10:10:47,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 10:10:47,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:10:47,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:10:47,124 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:10:47,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 10:10:47,241 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 10:10:47,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:10:47,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 10:10:47,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:10:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:10:47,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:10:47,573 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:10:47,573 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-01-28 10:10:47,741 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:10:47,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728466455] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:10:47,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:10:47,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 10] total 33 [2023-01-28 10:10:47,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080765582] [2023-01-28 10:10:47,742 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:10:47,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-01-28 10:10:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:10:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-01-28 10:10:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2023-01-28 10:10:47,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 475 [2023-01-28 10:10:47,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 746 transitions, 10979 flow. Second operand has 33 states, 33 states have (on average 135.3939393939394) internal successors, (4468), 33 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) [2023-01-28 10:10:47,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:10:47,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 475 [2023-01-28 10:10:47,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:11:04,026 INFO L130 PetriNetUnfolder]: 43235/59184 cut-off events. [2023-01-28 10:11:04,026 INFO L131 PetriNetUnfolder]: For 1599924/1599924 co-relation queries the response was YES. [2023-01-28 10:11:04,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502529 conditions, 59184 events. 43235/59184 cut-off events. For 1599924/1599924 co-relation queries the response was YES. Maximal size of possible extension queue 2224. Compared 362968 event pairs, 5376 based on Foata normal form. 148/59332 useless extension candidates. Maximal degree in co-relation 491492. Up to 26131 conditions per place. [2023-01-28 10:11:05,102 INFO L137 encePairwiseOnDemand]: 456/475 looper letters, 1906 selfloop transitions, 1731 changer transitions 62/3699 dead transitions. [2023-01-28 10:11:05,103 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 3699 transitions, 66486 flow [2023-01-28 10:11:05,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2023-01-28 10:11:05,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2023-01-28 10:11:05,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 7831 transitions. [2023-01-28 10:11:05,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2997511961722488 [2023-01-28 10:11:05,111 INFO L72 ComplementDD]: Start complementDD. Operand 55 states and 7831 transitions. [2023-01-28 10:11:05,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 55 states and 7831 transitions. [2023-01-28 10:11:05,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:11:05,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 55 states and 7831 transitions. [2023-01-28 10:11:05,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 56 states, 55 states have (on average 142.38181818181818) internal successors, (7831), 55 states have internal predecessors, (7831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:11:05,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 56 states, 56 states have (on average 475.0) internal successors, (26600), 56 states have internal predecessors, (26600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:11:05,133 INFO L81 ComplementDD]: Finished complementDD. Result has 56 states, 56 states have (on average 475.0) internal successors, (26600), 56 states have internal predecessors, (26600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:11:05,133 INFO L175 Difference]: Start difference. First operand has 230 places, 746 transitions, 10979 flow. Second operand 55 states and 7831 transitions. [2023-01-28 10:11:05,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 3699 transitions, 66486 flow [2023-01-28 10:11:30,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 3699 transitions, 56400 flow, removed 5039 selfloop flow, removed 3 redundant places. [2023-01-28 10:11:30,601 INFO L231 Difference]: Finished difference. Result has 322 places, 2144 transitions, 35960 flow [2023-01-28 10:11:30,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=9170, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=746, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=403, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=55, PETRI_FLOW=35960, PETRI_PLACES=322, PETRI_TRANSITIONS=2144} [2023-01-28 10:11:30,601 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 286 predicate places. [2023-01-28 10:11:30,601 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 2144 transitions, 35960 flow [2023-01-28 10:11:30,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 135.3939393939394) internal successors, (4468), 33 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) [2023-01-28 10:11:30,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:11:30,602 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:11:30,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 10:11:30,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 10:11:30,806 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:11:30,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:11:30,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1203366245, now seen corresponding path program 4 times [2023-01-28 10:11:30,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:11:30,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584175421] [2023-01-28 10:11:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:11:30,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:11:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:11:31,203 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:11:31,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:11:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584175421] [2023-01-28 10:11:31,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584175421] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:11:31,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004612293] [2023-01-28 10:11:31,204 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 10:11:31,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:11:31,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:11:31,206 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:11:31,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 10:11:31,307 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 10:11:31,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:11:31,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 19 conjunts are in the unsatisfiable core [2023-01-28 10:11:31,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:11:31,505 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-28 10:11:31,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 11 [2023-01-28 10:11:31,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:11:31,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 10:11:31,600 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 10:11:31,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 15 [2023-01-28 10:11:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:11:31,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004612293] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 10:11:31,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 10:11:31,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 31 [2023-01-28 10:11:31,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037606693] [2023-01-28 10:11:31,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 10:11:31,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 10:11:31,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:11:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 10:11:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=824, Unknown=0, NotChecked=0, Total=930 [2023-01-28 10:11:31,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 475 [2023-01-28 10:11:31,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 2144 transitions, 35960 flow. Second operand has 31 states, 31 states have (on average 141.2258064516129) internal successors, (4378), 31 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:11:31,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:11:31,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 475 [2023-01-28 10:11:31,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:12:21,284 INFO L130 PetriNetUnfolder]: 89215/122753 cut-off events. [2023-01-28 10:12:21,284 INFO L131 PetriNetUnfolder]: For 4433610/4433610 co-relation queries the response was YES. [2023-01-28 10:12:24,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1161170 conditions, 122753 events. 89215/122753 cut-off events. For 4433610/4433610 co-relation queries the response was YES. Maximal size of possible extension queue 4585. Compared 827249 event pairs, 7656 based on Foata normal form. 842/123595 useless extension candidates. Maximal degree in co-relation 1154409. Up to 54135 conditions per place. [2023-01-28 10:12:25,561 INFO L137 encePairwiseOnDemand]: 454/475 looper letters, 1939 selfloop transitions, 4719 changer transitions 192/6850 dead transitions. [2023-01-28 10:12:25,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 6850 transitions, 128572 flow [2023-01-28 10:12:25,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-01-28 10:12:25,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2023-01-28 10:12:25,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 17177 transitions. [2023-01-28 10:12:25,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3117422867513612 [2023-01-28 10:12:25,574 INFO L72 ComplementDD]: Start complementDD. Operand 116 states and 17177 transitions. [2023-01-28 10:12:25,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 116 states and 17177 transitions. [2023-01-28 10:12:25,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:12:25,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 116 states and 17177 transitions. [2023-01-28 10:12:25,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 117 states, 116 states have (on average 148.07758620689654) internal successors, (17177), 116 states have internal predecessors, (17177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:12:25,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 117 states, 117 states have (on average 475.0) internal successors, (55575), 117 states have internal predecessors, (55575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:12:25,624 INFO L81 ComplementDD]: Finished complementDD. Result has 117 states, 117 states have (on average 475.0) internal successors, (55575), 117 states have internal predecessors, (55575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:12:25,625 INFO L175 Difference]: Start difference. First operand has 322 places, 2144 transitions, 35960 flow. Second operand 116 states and 17177 transitions. [2023-01-28 10:12:25,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 6850 transitions, 128572 flow [2023-01-28 10:15:13,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 6850 transitions, 125768 flow, removed 1399 selfloop flow, removed 3 redundant places. [2023-01-28 10:15:14,071 INFO L231 Difference]: Finished difference. Result has 528 places, 5418 transitions, 109588 flow [2023-01-28 10:15:14,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=34634, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1647, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=116, PETRI_FLOW=109588, PETRI_PLACES=528, PETRI_TRANSITIONS=5418} [2023-01-28 10:15:14,073 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 492 predicate places. [2023-01-28 10:15:14,073 INFO L495 AbstractCegarLoop]: Abstraction has has 528 places, 5418 transitions, 109588 flow [2023-01-28 10:15:14,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 141.2258064516129) internal successors, (4378), 31 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:15:14,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:15:14,074 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:15:14,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 10:15:14,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 10:15:14,282 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:15:14,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:15:14,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2083007621, now seen corresponding path program 5 times [2023-01-28 10:15:14,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:15:14,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292525495] [2023-01-28 10:15:14,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:15:14,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:15:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:15:14,675 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:15:14,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:15:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292525495] [2023-01-28 10:15:14,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292525495] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:15:14,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [976572344] [2023-01-28 10:15:14,675 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 10:15:14,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:15:14,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:15:14,676 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:15:14,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 10:15:14,782 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 10:15:14,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:15:14,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 10:15:14,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 10:15:14,998 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 10:15:14,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 10:15:14,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [976572344] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 10:15:14,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 10:15:14,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 23 [2023-01-28 10:15:14,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098444688] [2023-01-28 10:15:14,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 10:15:14,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 10:15:14,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 10:15:14,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 10:15:14,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2023-01-28 10:15:15,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 475 [2023-01-28 10:15:15,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 528 places, 5418 transitions, 109588 flow. Second operand has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:15:15,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 10:15:15,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 475 [2023-01-28 10:15:15,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 10:17:07,416 INFO L130 PetriNetUnfolder]: 88654/121890 cut-off events. [2023-01-28 10:17:07,416 INFO L131 PetriNetUnfolder]: For 8977914/8977914 co-relation queries the response was YES. [2023-01-28 10:17:14,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511576 conditions, 121890 events. 88654/121890 cut-off events. For 8977914/8977914 co-relation queries the response was YES. Maximal size of possible extension queue 4561. Compared 819463 event pairs, 19870 based on Foata normal form. 48/121938 useless extension candidates. Maximal degree in co-relation 1510193. Up to 68100 conditions per place. [2023-01-28 10:17:14,912 INFO L137 encePairwiseOnDemand]: 462/475 looper letters, 4682 selfloop transitions, 1315 changer transitions 2/5999 dead transitions. [2023-01-28 10:17:14,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 5999 transitions, 133102 flow [2023-01-28 10:17:14,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 10:17:14,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 10:17:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2045 transitions. [2023-01-28 10:17:14,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587719298245614 [2023-01-28 10:17:14,922 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2045 transitions. [2023-01-28 10:17:14,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2045 transitions. [2023-01-28 10:17:14,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 10:17:14,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2045 transitions. [2023-01-28 10:17:14,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 170.41666666666666) internal successors, (2045), 12 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:17:14,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 475.0) internal successors, (6175), 13 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:17:14,927 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 475.0) internal successors, (6175), 13 states have internal predecessors, (6175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:17:14,927 INFO L175 Difference]: Start difference. First operand has 528 places, 5418 transitions, 109588 flow. Second operand 12 states and 2045 transitions. [2023-01-28 10:17:14,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 5999 transitions, 133102 flow [2023-01-28 10:24:08,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 533 places, 5999 transitions, 126423 flow, removed 3186 selfloop flow, removed 6 redundant places. [2023-01-28 10:24:08,518 INFO L231 Difference]: Finished difference. Result has 535 places, 5509 transitions, 108447 flow [2023-01-28 10:24:08,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=475, PETRI_DIFFERENCE_MINUEND_FLOW=104091, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1219, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=108447, PETRI_PLACES=535, PETRI_TRANSITIONS=5509} [2023-01-28 10:24:08,522 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 499 predicate places. [2023-01-28 10:24:08,522 INFO L495 AbstractCegarLoop]: Abstraction has has 535 places, 5509 transitions, 108447 flow [2023-01-28 10:24:08,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 162.33333333333334) internal successors, (1948), 12 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 10:24:08,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 10:24:08,522 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 10:24:08,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 10:24:08,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 10:24:08,727 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 10:24:08,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 10:24:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash 333602691, now seen corresponding path program 6 times [2023-01-28 10:24:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 10:24:08,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364157028] [2023-01-28 10:24:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 10:24:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 10:24:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 10:24:09,066 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 10:24:09,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 10:24:09,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364157028] [2023-01-28 10:24:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364157028] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 10:24:09,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457849833] [2023-01-28 10:24:09,066 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 10:24:09,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 10:24:09,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 10:24:09,067 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 10:24:09,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 10:24:09,179 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 10:24:09,179 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 10:24:09,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 10:24:09,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2023-01-28 10:24:09,318 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-28 10:24:09,323 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:24:09,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 10:24:09,362 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 10:24:09,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 10:24:09,519 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. [2023-01-28 10:24:09,520 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-28 10:24:09,520 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-28 10:24:09,520 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-28 10:24:09,520 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 3, 2, 1, 1, 1, 1] [2023-01-28 10:24:09,522 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 10:24:09,522 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 10:24:09,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 10:24:09 BasicIcfg [2023-01-28 10:24:09,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 10:24:09,524 INFO L158 Benchmark]: Toolchain (without parser) took 840248.67ms. Allocated memory was 597.7MB in the beginning and 14.3GB in the end (delta: 13.7GB). Free memory was 557.2MB in the beginning and 8.6GB in the end (delta: -8.1GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-01-28 10:24:09,524 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 379.6MB. Free memory is still 329.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 10:24:09,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.01ms. Allocated memory is still 597.7MB. Free memory was 557.2MB in the beginning and 545.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 10:24:09,525 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.86ms. Allocated memory is still 597.7MB. Free memory was 545.1MB in the beginning and 542.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:24:09,525 INFO L158 Benchmark]: Boogie Preprocessor took 37.83ms. Allocated memory is still 597.7MB. Free memory was 542.4MB in the beginning and 540.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 10:24:09,525 INFO L158 Benchmark]: RCFGBuilder took 542.49ms. Allocated memory is still 597.7MB. Free memory was 540.3MB in the beginning and 502.2MB in the end (delta: 38.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-01-28 10:24:09,525 INFO L158 Benchmark]: TraceAbstraction took 839388.09ms. Allocated memory was 597.7MB in the beginning and 14.3GB in the end (delta: 13.7GB). Free memory was 501.6MB in the beginning and 8.6GB in the end (delta: -8.1GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-01-28 10:24:09,526 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 379.6MB. Free memory is still 329.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 225.01ms. Allocated memory is still 597.7MB. Free memory was 557.2MB in the beginning and 545.1MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.86ms. Allocated memory is still 597.7MB. Free memory was 545.1MB in the beginning and 542.4MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.83ms. Allocated memory is still 597.7MB. Free memory was 542.4MB in the beginning and 540.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 542.49ms. Allocated memory is still 597.7MB. Free memory was 540.3MB in the beginning and 502.2MB in the end (delta: 38.2MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 839388.09ms. Allocated memory was 597.7MB in the beginning and 14.3GB in the end (delta: 13.7GB). Free memory was 501.6MB in the beginning and 8.6GB in the end (delta: -8.1GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 211 PlacesBefore, 36 PlacesAfterwards, 226 TransitionsBefore, 34 TransitionsAfterwards, 6720 CoEnabledTransitionPairs, 7 FixpointIterations, 100 TrivialSequentialCompositions, 66 ConcurrentSequentialCompositions, 28 TrivialYvCompositions, 25 ConcurrentYvCompositions, 17 ChoiceCompositions, 236 TotalNumberOfCompositions, 7402 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6611, independent: 6555, independent conditional: 0, independent unconditional: 6555, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3972, independent: 3945, independent conditional: 0, independent unconditional: 3945, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6611, independent: 2610, independent conditional: 0, independent unconditional: 2610, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 3972, unknown conditional: 0, unknown unconditional: 3972] , Statistics on independence cache: Total cache size (in pairs): 117, Positive cache size: 111, Positive conditional cache size: 0, Positive unconditional cache size: 111, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 30 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 19 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 290 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 839.2s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 821.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3706 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3706 mSDsluCounter, 1006 SdHoareTripleChecker+Invalid, 7.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 593 IncrementalHoareTripleChecker+Unchecked, 925 mSDsCounter, 146 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19713 IncrementalHoareTripleChecker+Invalid, 20452 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 146 mSolverCounterUnsat, 81 mSDtfsCounter, 19713 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 959 GetRequests, 431 SyntacticMatches, 9 SemanticMatches, 519 ConstructedPredicates, 2 IntricatePredicates, 2 DeprecatedPredicates, 11274 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109588occurred in iteration=16, InterpolantAutomatonStates: 353, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 7.4s InterpolantComputationTime, 746 NumberOfCodeBlocks, 746 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 965 ConstructedInterpolants, 10 QuantifiedInterpolants, 7567 SizeOfPredicates, 134 NumberOfNonLiveVariables, 2999 ConjunctsInSsa, 179 ConjunctsInUnsatCore, 36 InterpolantComputations, 9 PerfectInterpolantSequences, 136/190 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown