/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:15:46,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:15:46,559 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:15:46,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:15:46,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:15:46,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:15:46,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:15:46,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:15:46,588 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:15:46,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:15:46,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:15:46,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:15:46,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:15:46,596 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:15:46,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:15:46,598 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:15:46,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:15:46,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:15:46,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:15:46,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:15:46,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:15:46,605 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:15:46,606 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:15:46,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:15:46,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-27 23:15:46,614 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-27 23:15:46,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-27 23:15:46,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-27 23:15:46,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-27 23:15:46,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-27 23:15:46,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 23:15:46,616 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 23:15:46,617 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 23:15:46,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 23:15:46,618 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 23:15:46,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 23:15:46,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 23:15:46,618 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 23:15:46,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:15:46,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:15:46,619 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:15:46,623 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 [2023-01-27 23:15:46,642 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:15:46,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:15:46,643 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:15:46,643 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:15:46,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:15:46,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:15:46,643 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:15:46,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:15:46,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:15:46,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:15:46,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:15:46,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:15:46,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:15:46,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:15:46,646 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:15:46,646 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:15:46,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 23:15:46,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:15:46,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:15:46,842 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:15:46,842 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:15:46,843 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:15:46,844 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-01-27 23:15:47,806 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:15:47,923 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:15:47,923 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-3.wvr.c [2023-01-27 23:15:47,927 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642f6ec2d/34bae00c958f42c9841f921aa0987772/FLAGfd3562e1f [2023-01-27 23:15:47,935 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/642f6ec2d/34bae00c958f42c9841f921aa0987772 [2023-01-27 23:15:47,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:15:47,937 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:15:47,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:15:47,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:15:47,940 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:15:47,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:15:47" (1/1) ... [2023-01-27 23:15:47,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13aed1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:47, skipping insertion in model container [2023-01-27 23:15:47,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:15:47" (1/1) ... [2023-01-27 23:15:47,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:15:47,955 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:15:48,062 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/unroll-cond-3.wvr.c[2641,2654] [2023-01-27 23:15:48,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:15:48,072 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:15:48,088 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/unroll-cond-3.wvr.c[2641,2654] [2023-01-27 23:15:48,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:15:48,098 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:15:48,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48 WrapperNode [2023-01-27 23:15:48,099 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:15:48,099 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:15:48,100 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:15:48,100 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:15:48,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,122 INFO L138 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 165 [2023-01-27 23:15:48,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:15:48,123 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:15:48,123 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:15:48,123 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:15:48,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,131 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,135 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,144 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:15:48,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:15:48,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:15:48,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:15:48,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (1/1) ... [2023-01-27 23:15:48,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:15:48,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:15:48,171 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) [2023-01-27 23:15:48,174 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 [2023-01-27 23:15:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:15:48,192 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-27 23:15:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-27 23:15:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:15:48,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:15:48,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:15:48,194 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:15:48,256 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:15:48,257 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:15:48,529 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:15:48,536 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:15:48,536 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-01-27 23:15:48,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:15:48 BoogieIcfgContainer [2023-01-27 23:15:48,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:15:48,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:15:48,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:15:48,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:15:48,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:15:47" (1/3) ... [2023-01-27 23:15:48,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627fbecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:15:48, skipping insertion in model container [2023-01-27 23:15:48,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:15:48" (2/3) ... [2023-01-27 23:15:48,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@627fbecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:15:48, skipping insertion in model container [2023-01-27 23:15:48,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:15:48" (3/3) ... [2023-01-27 23:15:48,543 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-3.wvr.c [2023-01-27 23:15:48,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:15:48,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 23:15:48,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:15:48,626 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:15:48,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 194 transitions, 404 flow [2023-01-27 23:15:48,735 INFO L130 PetriNetUnfolder]: 18/192 cut-off events. [2023-01-27 23:15:48,735 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:15:48,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 192 events. 18/192 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 300 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-27 23:15:48,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 194 transitions, 404 flow [2023-01-27 23:15:48,747 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 173 places, 184 transitions, 380 flow [2023-01-27 23:15:48,749 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:15:48,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 173 places, 184 transitions, 380 flow [2023-01-27 23:15:48,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 173 places, 184 transitions, 380 flow [2023-01-27 23:15:48,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 184 transitions, 380 flow [2023-01-27 23:15:48,797 INFO L130 PetriNetUnfolder]: 18/184 cut-off events. [2023-01-27 23:15:48,798 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:15:48,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 18/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 281 event pairs, 0 based on Foata normal form. 0/166 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-01-27 23:15:48,800 INFO L119 LiptonReduction]: Number of co-enabled transitions 4092 [2023-01-27 23:15:53,350 INFO L134 LiptonReduction]: Checked pairs total: 4038 [2023-01-27 23:15:53,350 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-01-27 23:15:53,369 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:15:53,373 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;@5f6d1a06, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:15:53,373 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 23:15:53,381 INFO L130 PetriNetUnfolder]: 3/16 cut-off events. [2023-01-27 23:15:53,381 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:15:53,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:53,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:53,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:53,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:53,386 INFO L85 PathProgramCache]: Analyzing trace with hash -562838425, now seen corresponding path program 1 times [2023-01-27 23:15:53,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:53,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486934664] [2023-01-27 23:15:53,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:53,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:15:53,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:53,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486934664] [2023-01-27 23:15:53,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486934664] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:53,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:53,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:15:53,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817356639] [2023-01-27 23:15:53,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:53,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:15:53,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:53,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:15:53,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:15:53,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 415 [2023-01-27 23:15:53,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:53,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:53,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 415 [2023-01-27 23:15:53,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:53,786 INFO L130 PetriNetUnfolder]: 49/84 cut-off events. [2023-01-27 23:15:53,787 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-01-27 23:15:53,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 84 events. 49/84 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 188 event pairs, 19 based on Foata normal form. 0/54 useless extension candidates. Maximal degree in co-relation 129. Up to 81 conditions per place. [2023-01-27 23:15:53,789 INFO L137 encePairwiseOnDemand]: 412/415 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-27 23:15:53,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 18 transitions, 80 flow [2023-01-27 23:15:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:15:53,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:15:53,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-01-27 23:15:53,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41124497991967873 [2023-01-27 23:15:53,807 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-01-27 23:15:53,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-01-27 23:15:53,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:53,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-01-27 23:15:53,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:53,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:53,816 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 415.0) internal successors, (1660), 4 states have internal predecessors, (1660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:53,817 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 46 flow. Second operand 3 states and 512 transitions. [2023-01-27 23:15:53,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 18 transitions, 80 flow [2023-01-27 23:15:53,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-27 23:15:53,819 INFO L231 Difference]: Finished difference. Result has 20 places, 18 transitions, 50 flow [2023-01-27 23:15:53,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=20, PETRI_TRANSITIONS=18} [2023-01-27 23:15:53,822 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, -1 predicate places. [2023-01-27 23:15:53,822 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 18 transitions, 50 flow [2023-01-27 23:15:53,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:53,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:53,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:53,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:15:53,823 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:53,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:53,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1112897671, now seen corresponding path program 1 times [2023-01-27 23:15:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:53,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443129140] [2023-01-27 23:15:53,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:53,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443129140] [2023-01-27 23:15:54,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443129140] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:54,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:54,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:15:54,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341380285] [2023-01-27 23:15:54,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:54,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:15:54,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:54,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:15:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:15:54,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:15:54,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 18 transitions, 50 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:54,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:15:54,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:54,315 INFO L130 PetriNetUnfolder]: 72/135 cut-off events. [2023-01-27 23:15:54,315 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:15:54,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 135 events. 72/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 367 event pairs, 24 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 274. Up to 77 conditions per place. [2023-01-27 23:15:54,318 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 35 selfloop transitions, 5 changer transitions 0/40 dead transitions. [2023-01-27 23:15:54,318 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 40 transitions, 179 flow [2023-01-27 23:15:54,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:15:54,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:15:54,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 800 transitions. [2023-01-27 23:15:54,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3855421686746988 [2023-01-27 23:15:54,320 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 800 transitions. [2023-01-27 23:15:54,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 800 transitions. [2023-01-27 23:15:54,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:54,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 800 transitions. [2023-01-27 23:15:54,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,326 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,326 INFO L175 Difference]: Start difference. First operand has 20 places, 18 transitions, 50 flow. Second operand 5 states and 800 transitions. [2023-01-27 23:15:54,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 40 transitions, 179 flow [2023-01-27 23:15:54,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 40 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 23:15:54,335 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 82 flow [2023-01-27 23:15:54,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2023-01-27 23:15:54,337 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 5 predicate places. [2023-01-27 23:15:54,337 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 82 flow [2023-01-27 23:15:54,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:54,338 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:54,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:15:54,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:54,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:54,339 INFO L85 PathProgramCache]: Analyzing trace with hash -387576613, now seen corresponding path program 2 times [2023-01-27 23:15:54,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:54,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015953735] [2023-01-27 23:15:54,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:54,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:54,497 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:54,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:54,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015953735] [2023-01-27 23:15:54,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015953735] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:54,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:54,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:15:54,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993730761] [2023-01-27 23:15:54,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:15:54,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:15:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:15:54,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:15:54,502 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,502 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:54,502 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:15:54,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:54,609 INFO L130 PetriNetUnfolder]: 111/208 cut-off events. [2023-01-27 23:15:54,610 INFO L131 PetriNetUnfolder]: For 115/115 co-relation queries the response was YES. [2023-01-27 23:15:54,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 208 events. 111/208 cut-off events. For 115/115 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 662 event pairs, 42 based on Foata normal form. 2/169 useless extension candidates. Maximal degree in co-relation 584. Up to 133 conditions per place. [2023-01-27 23:15:54,611 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 37 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2023-01-27 23:15:54,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 44 transitions, 252 flow [2023-01-27 23:15:54,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:15:54,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:15:54,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 796 transitions. [2023-01-27 23:15:54,614 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3836144578313253 [2023-01-27 23:15:54,614 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 796 transitions. [2023-01-27 23:15:54,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 796 transitions. [2023-01-27 23:15:54,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:54,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 796 transitions. [2023-01-27 23:15:54,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,620 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,620 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 82 flow. Second operand 5 states and 796 transitions. [2023-01-27 23:15:54,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 44 transitions, 252 flow [2023-01-27 23:15:54,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 235 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-01-27 23:15:54,622 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 124 flow [2023-01-27 23:15:54,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=124, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-27 23:15:54,623 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 11 predicate places. [2023-01-27 23:15:54,626 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 124 flow [2023-01-27 23:15:54,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:54,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:54,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 23:15:54,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:54,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash 111746231, now seen corresponding path program 3 times [2023-01-27 23:15:54,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:54,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507342350] [2023-01-27 23:15:54,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:54,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:54,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:54,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:54,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507342350] [2023-01-27 23:15:54,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507342350] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:54,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:54,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:15:54,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932798754] [2023-01-27 23:15:54,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:54,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:15:54,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:54,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:15:54,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:15:54,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:15:54,825 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,825 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:54,825 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:15:54,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:54,931 INFO L130 PetriNetUnfolder]: 121/224 cut-off events. [2023-01-27 23:15:54,931 INFO L131 PetriNetUnfolder]: For 317/317 co-relation queries the response was YES. [2023-01-27 23:15:54,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785 conditions, 224 events. 121/224 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 744 event pairs, 44 based on Foata normal form. 4/201 useless extension candidates. Maximal degree in co-relation 764. Up to 121 conditions per place. [2023-01-27 23:15:54,933 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 37 selfloop transitions, 12 changer transitions 0/49 dead transitions. [2023-01-27 23:15:54,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 49 transitions, 321 flow [2023-01-27 23:15:54,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:15:54,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:15:54,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 801 transitions. [2023-01-27 23:15:54,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3860240963855422 [2023-01-27 23:15:54,935 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 801 transitions. [2023-01-27 23:15:54,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 801 transitions. [2023-01-27 23:15:54,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:54,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 801 transitions. [2023-01-27 23:15:54,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,943 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,943 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 124 flow. Second operand 5 states and 801 transitions. [2023-01-27 23:15:54,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 49 transitions, 321 flow [2023-01-27 23:15:54,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 49 transitions, 297 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-27 23:15:54,948 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 203 flow [2023-01-27 23:15:54,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-01-27 23:15:54,949 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 17 predicate places. [2023-01-27 23:15:54,949 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 203 flow [2023-01-27 23:15:54,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:54,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:54,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:54,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:15:54,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:54,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 664116733, now seen corresponding path program 4 times [2023-01-27 23:15:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:54,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661413734] [2023-01-27 23:15:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:54,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:54,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:55,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:55,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661413734] [2023-01-27 23:15:55,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661413734] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:55,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:55,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:15:55,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330856596] [2023-01-27 23:15:55,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:55,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:15:55,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:55,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:15:55,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:15:55,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:15:55,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:55,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:15:55,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:55,215 INFO L130 PetriNetUnfolder]: 117/220 cut-off events. [2023-01-27 23:15:55,215 INFO L131 PetriNetUnfolder]: For 530/530 co-relation queries the response was YES. [2023-01-27 23:15:55,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 220 events. 117/220 cut-off events. For 530/530 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 720 event pairs, 50 based on Foata normal form. 4/197 useless extension candidates. Maximal degree in co-relation 824. Up to 177 conditions per place. [2023-01-27 23:15:55,216 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 32 selfloop transitions, 15 changer transitions 0/47 dead transitions. [2023-01-27 23:15:55,216 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 375 flow [2023-01-27 23:15:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:15:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:15:55,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-01-27 23:15:55,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38313253012048193 [2023-01-27 23:15:55,219 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-01-27 23:15:55,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-01-27 23:15:55,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:55,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-01-27 23:15:55,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,223 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,225 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,225 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 203 flow. Second operand 5 states and 795 transitions. [2023-01-27 23:15:55,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 375 flow [2023-01-27 23:15:55,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 362 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 23:15:55,228 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 296 flow [2023-01-27 23:15:55,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-01-27 23:15:55,231 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 22 predicate places. [2023-01-27 23:15:55,231 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 296 flow [2023-01-27 23:15:55,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:55,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:55,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:15:55,231 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:55,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:55,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1682708675, now seen corresponding path program 5 times [2023-01-27 23:15:55,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:55,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935146754] [2023-01-27 23:15:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:55,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:55,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:55,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:55,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:55,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935146754] [2023-01-27 23:15:55,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935146754] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:55,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:55,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:15:55,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308506356] [2023-01-27 23:15:55,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:55,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:15:55,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:55,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:15:55,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:15:55,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:15:55,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 296 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:55,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:15:55,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:55,436 INFO L130 PetriNetUnfolder]: 118/223 cut-off events. [2023-01-27 23:15:55,436 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-27 23:15:55,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 960 conditions, 223 events. 118/223 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 742 event pairs, 38 based on Foata normal form. 2/198 useless extension candidates. Maximal degree in co-relation 934. Up to 123 conditions per place. [2023-01-27 23:15:55,438 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 38 selfloop transitions, 14 changer transitions 0/52 dead transitions. [2023-01-27 23:15:55,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 442 flow [2023-01-27 23:15:55,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:15:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:15:55,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 799 transitions. [2023-01-27 23:15:55,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38506024096385544 [2023-01-27 23:15:55,440 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 799 transitions. [2023-01-27 23:15:55,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 799 transitions. [2023-01-27 23:15:55,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:55,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 799 transitions. [2023-01-27 23:15:55,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.8) internal successors, (799), 5 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) [2023-01-27 23:15:55,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,444 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,444 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 296 flow. Second operand 5 states and 799 transitions. [2023-01-27 23:15:55,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 442 flow [2023-01-27 23:15:55,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 52 transitions, 388 flow, removed 15 selfloop flow, removed 2 redundant places. [2023-01-27 23:15:55,448 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 282 flow [2023-01-27 23:15:55,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=282, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-01-27 23:15:55,450 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 25 predicate places. [2023-01-27 23:15:55,450 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 282 flow [2023-01-27 23:15:55,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:55,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:15:55,450 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:55,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:55,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1368229791, now seen corresponding path program 6 times [2023-01-27 23:15:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95103031] [2023-01-27 23:15:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:55,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:55,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:55,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95103031] [2023-01-27 23:15:55,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95103031] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:15:55,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:15:55,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 23:15:55,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217870261] [2023-01-27 23:15:55,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:15:55,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 23:15:55,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:55,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 23:15:55,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 23:15:55,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:15:55,611 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 282 flow. Second operand has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,611 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:55,611 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:15:55,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:15:55,690 INFO L130 PetriNetUnfolder]: 117/216 cut-off events. [2023-01-27 23:15:55,690 INFO L131 PetriNetUnfolder]: For 679/679 co-relation queries the response was YES. [2023-01-27 23:15:55,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 216 events. 117/216 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 703 event pairs, 49 based on Foata normal form. 2/191 useless extension candidates. Maximal degree in co-relation 870. Up to 170 conditions per place. [2023-01-27 23:15:55,692 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 34 selfloop transitions, 15 changer transitions 0/49 dead transitions. [2023-01-27 23:15:55,692 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 49 transitions, 414 flow [2023-01-27 23:15:55,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 23:15:55,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 23:15:55,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 795 transitions. [2023-01-27 23:15:55,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38313253012048193 [2023-01-27 23:15:55,694 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 795 transitions. [2023-01-27 23:15:55,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 795 transitions. [2023-01-27 23:15:55,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:15:55,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 795 transitions. [2023-01-27 23:15:55,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 415.0) internal successors, (2490), 6 states have internal predecessors, (2490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,698 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 282 flow. Second operand 5 states and 795 transitions. [2023-01-27 23:15:55,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 49 transitions, 414 flow [2023-01-27 23:15:55,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 49 transitions, 380 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-01-27 23:15:55,700 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 294 flow [2023-01-27 23:15:55,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=294, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-01-27 23:15:55,701 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 27 predicate places. [2023-01-27 23:15:55,701 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 294 flow [2023-01-27 23:15:55,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.0) internal successors, (775), 5 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:55,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:15:55,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:15:55,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:15:55,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:15:55,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:15:55,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1003719491, now seen corresponding path program 1 times [2023-01-27 23:15:55,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:15:55,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999218516] [2023-01-27 23:15:55,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:55,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:15:55,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:55,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:55,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:15:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999218516] [2023-01-27 23:15:55,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999218516] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:15:55,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738690972] [2023-01-27 23:15:55,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:15:55,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:15:55,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:15:55,891 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) [2023-01-27 23:15:55,908 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:15:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:15:55,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-27 23:15:55,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:15:56,467 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 23:15:56,468 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 179 treesize of output 168 [2023-01-27 23:15:56,610 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:15:56,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:15:57,570 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-01-27 23:15:57,571 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 45 [2023-01-27 23:15:57,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:15:57,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738690972] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:15:57,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:15:57,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 6] total 18 [2023-01-27 23:15:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501269099] [2023-01-27 23:15:57,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:15:57,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-27 23:15:57,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:15:57,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-27 23:15:57,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-01-27 23:15:57,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-27 23:15:57,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 294 flow. Second operand has 18 states, 18 states have (on average 108.16666666666667) internal successors, (1947), 18 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:15:57,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:15:57,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-27 23:15:57,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:16:00,594 INFO L130 PetriNetUnfolder]: 445/853 cut-off events. [2023-01-27 23:16:00,594 INFO L131 PetriNetUnfolder]: For 2069/2069 co-relation queries the response was YES. [2023-01-27 23:16:00,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 853 events. 445/853 cut-off events. For 2069/2069 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4322 event pairs, 17 based on Foata normal form. 9/723 useless extension candidates. Maximal degree in co-relation 2803. Up to 261 conditions per place. [2023-01-27 23:16:00,598 INFO L137 encePairwiseOnDemand]: 403/415 looper letters, 140 selfloop transitions, 91 changer transitions 28/259 dead transitions. [2023-01-27 23:16:00,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 259 transitions, 1884 flow [2023-01-27 23:16:00,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-01-27 23:16:00,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-01-27 23:16:00,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3727 transitions. [2023-01-27 23:16:00,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27214311792625046 [2023-01-27 23:16:00,607 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3727 transitions. [2023-01-27 23:16:00,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3727 transitions. [2023-01-27 23:16:00,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:16:00,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3727 transitions. [2023-01-27 23:16:00,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 112.93939393939394) internal successors, (3727), 33 states have internal predecessors, (3727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:00,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 415.0) internal successors, (14110), 34 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:00,627 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 415.0) internal successors, (14110), 34 states have internal predecessors, (14110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:00,627 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 294 flow. Second operand 33 states and 3727 transitions. [2023-01-27 23:16:00,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 259 transitions, 1884 flow [2023-01-27 23:16:00,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 259 transitions, 1776 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-01-27 23:16:00,635 INFO L231 Difference]: Finished difference. Result has 95 places, 125 transitions, 1210 flow [2023-01-27 23:16:00,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1210, PETRI_PLACES=95, PETRI_TRANSITIONS=125} [2023-01-27 23:16:00,636 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 74 predicate places. [2023-01-27 23:16:00,637 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 125 transitions, 1210 flow [2023-01-27 23:16:00,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 108.16666666666667) internal successors, (1947), 18 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:00,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:16:00,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:16:00,642 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-27 23:16:00,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:16:00,842 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:16:00,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:16:00,843 INFO L85 PathProgramCache]: Analyzing trace with hash -763425186, now seen corresponding path program 1 times [2023-01-27 23:16:00,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:16:00,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123909627] [2023-01-27 23:16:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:16:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:16:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:16:00,985 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:16:00,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:16:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123909627] [2023-01-27 23:16:00,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123909627] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:16:00,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966202246] [2023-01-27 23:16:00,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:16:00,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:16:00,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:16:00,988 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) [2023-01-27 23:16:00,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:16:01,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:16:01,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 48 conjunts are in the unsatisfiable core [2023-01-27 23:16:01,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:16:01,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:16:01,141 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:16:01,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:16:01,536 INFO L321 Elim1Store]: treesize reduction 74, result has 14.9 percent of original size [2023-01-27 23:16:01,537 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 301 treesize of output 212 [2023-01-27 23:16:01,616 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:16:01,617 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:16:03,092 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:16:03,093 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 250 treesize of output 154 [2023-01-27 23:16:03,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:16:03,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 934 treesize of output 838 [2023-01-27 23:16:03,143 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:16:03,143 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 209 treesize of output 149 [2023-01-27 23:16:03,395 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:16:03,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 160 treesize of output 154 [2023-01-27 23:16:04,162 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-01-27 23:16:04,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 438 treesize of output 1 [2023-01-27 23:16:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:16:04,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966202246] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:16:04,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:16:04,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 8] total 23 [2023-01-27 23:16:04,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682510888] [2023-01-27 23:16:04,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:16:04,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-27 23:16:04,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:16:04,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-27 23:16:04,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=374, Unknown=11, NotChecked=0, Total=506 [2023-01-27 23:16:04,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 415 [2023-01-27 23:16:04,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 125 transitions, 1210 flow. Second operand has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:04,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:16:04,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 415 [2023-01-27 23:16:04,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:16:12,585 WARN L222 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:16:18,862 WARN L222 SmtUtils]: Spent 6.11s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:16:27,158 WARN L222 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:16:28,242 INFO L130 PetriNetUnfolder]: 681/1278 cut-off events. [2023-01-27 23:16:28,243 INFO L131 PetriNetUnfolder]: For 7461/7461 co-relation queries the response was YES. [2023-01-27 23:16:28,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6529 conditions, 1278 events. 681/1278 cut-off events. For 7461/7461 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7096 event pairs, 68 based on Foata normal form. 13/1289 useless extension candidates. Maximal degree in co-relation 6279. Up to 421 conditions per place. [2023-01-27 23:16:28,249 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 122 selfloop transitions, 116 changer transitions 36/274 dead transitions. [2023-01-27 23:16:28,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 274 transitions, 2760 flow [2023-01-27 23:16:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-01-27 23:16:28,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-01-27 23:16:28,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2465 transitions. [2023-01-27 23:16:28,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20481927710843373 [2023-01-27 23:16:28,255 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2465 transitions. [2023-01-27 23:16:28,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2465 transitions. [2023-01-27 23:16:28,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:16:28,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2465 transitions. [2023-01-27 23:16:28,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 85.0) internal successors, (2465), 29 states have internal predecessors, (2465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:28,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 415.0) internal successors, (12450), 30 states have internal predecessors, (12450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:28,270 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 415.0) internal successors, (12450), 30 states have internal predecessors, (12450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:28,270 INFO L175 Difference]: Start difference. First operand has 95 places, 125 transitions, 1210 flow. Second operand 29 states and 2465 transitions. [2023-01-27 23:16:28,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 274 transitions, 2760 flow [2023-01-27 23:16:28,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 274 transitions, 2452 flow, removed 131 selfloop flow, removed 7 redundant places. [2023-01-27 23:16:28,302 INFO L231 Difference]: Finished difference. Result has 120 places, 160 transitions, 1674 flow [2023-01-27 23:16:28,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1007, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1674, PETRI_PLACES=120, PETRI_TRANSITIONS=160} [2023-01-27 23:16:28,303 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 99 predicate places. [2023-01-27 23:16:28,303 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 160 transitions, 1674 flow [2023-01-27 23:16:28,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 81.08695652173913) internal successors, (1865), 23 states have internal predecessors, (1865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:28,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:16:28,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:16:28,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:16:28,512 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,SelfDestructingSolverStorable8 [2023-01-27 23:16:28,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:16:28,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:16:28,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608103, now seen corresponding path program 2 times [2023-01-27 23:16:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:16:28,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909685897] [2023-01-27 23:16:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:16:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:16:28,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:16:28,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:16:28,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:16:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909685897] [2023-01-27 23:16:28,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909685897] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:16:28,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346310395] [2023-01-27 23:16:28,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:16:28,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:16:28,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:16:28,666 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) [2023-01-27 23:16:28,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:16:28,757 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:16:28,757 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:16:28,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:16:28,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:16:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:16:28,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:16:28,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:16:28,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1346310395] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:16:28,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:16:28,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-27 23:16:28,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678200907] [2023-01-27 23:16:28,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:16:28,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 23:16:28,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:16:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 23:16:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-01-27 23:16:28,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 415 [2023-01-27 23:16:28,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 160 transitions, 1674 flow. Second operand has 12 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:28,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:16:28,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 415 [2023-01-27 23:16:28,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:16:29,328 INFO L130 PetriNetUnfolder]: 715/1334 cut-off events. [2023-01-27 23:16:29,329 INFO L131 PetriNetUnfolder]: For 9184/9184 co-relation queries the response was YES. [2023-01-27 23:16:29,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7359 conditions, 1334 events. 715/1334 cut-off events. For 9184/9184 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 7403 event pairs, 260 based on Foata normal form. 24/1357 useless extension candidates. Maximal degree in co-relation 6772. Up to 1097 conditions per place. [2023-01-27 23:16:29,372 INFO L137 encePairwiseOnDemand]: 409/415 looper letters, 153 selfloop transitions, 64 changer transitions 3/220 dead transitions. [2023-01-27 23:16:29,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 220 transitions, 2616 flow [2023-01-27 23:16:29,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-01-27 23:16:29,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-01-27 23:16:29,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1746 transitions. [2023-01-27 23:16:29,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38247535596933185 [2023-01-27 23:16:29,377 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1746 transitions. [2023-01-27 23:16:29,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1746 transitions. [2023-01-27 23:16:29,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:16:29,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1746 transitions. [2023-01-27 23:16:29,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.72727272727272) internal successors, (1746), 11 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:29,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 415.0) internal successors, (4980), 12 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:29,389 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 415.0) internal successors, (4980), 12 states have internal predecessors, (4980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:29,389 INFO L175 Difference]: Start difference. First operand has 120 places, 160 transitions, 1674 flow. Second operand 11 states and 1746 transitions. [2023-01-27 23:16:29,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 220 transitions, 2616 flow [2023-01-27 23:16:29,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 220 transitions, 2335 flow, removed 89 selfloop flow, removed 12 redundant places. [2023-01-27 23:16:29,418 INFO L231 Difference]: Finished difference. Result has 119 places, 188 transitions, 1999 flow [2023-01-27 23:16:29,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1467, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1999, PETRI_PLACES=119, PETRI_TRANSITIONS=188} [2023-01-27 23:16:29,419 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 98 predicate places. [2023-01-27 23:16:29,420 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 188 transitions, 1999 flow [2023-01-27 23:16:29,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 154.33333333333334) internal successors, (1852), 12 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:29,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:16:29,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:16:29,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:16:29,627 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 [2023-01-27 23:16:29,627 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:16:29,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:16:29,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1315904287, now seen corresponding path program 3 times [2023-01-27 23:16:29,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:16:29,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663551148] [2023-01-27 23:16:29,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:16:29,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:16:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:16:29,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:16:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:16:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663551148] [2023-01-27 23:16:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663551148] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:16:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370626201] [2023-01-27 23:16:29,786 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:16:29,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:16:29,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:16:29,787 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) [2023-01-27 23:16:29,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:16:29,851 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 23:16:29,852 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:16:29,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 23:16:29,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:16:30,113 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 23:16:30,114 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 179 treesize of output 168 [2023-01-27 23:16:30,199 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:16:30,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:16:30,729 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:16:30,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 148 [2023-01-27 23:16:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:16:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370626201] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:16:51,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:16:51,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-27 23:16:51,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121246194] [2023-01-27 23:16:51,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:16:51,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:16:51,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:16:51,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:16:51,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:16:51,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-27 23:16:51,501 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 188 transitions, 1999 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:51,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:16:51,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-27 23:16:51,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:16:53,564 INFO L130 PetriNetUnfolder]: 823/1530 cut-off events. [2023-01-27 23:16:53,565 INFO L131 PetriNetUnfolder]: For 10511/10511 co-relation queries the response was YES. [2023-01-27 23:16:53,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8533 conditions, 1530 events. 823/1530 cut-off events. For 10511/10511 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8744 event pairs, 155 based on Foata normal form. 12/1541 useless extension candidates. Maximal degree in co-relation 8388. Up to 1102 conditions per place. [2023-01-27 23:16:53,573 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 182 selfloop transitions, 79 changer transitions 11/272 dead transitions. [2023-01-27 23:16:53,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 272 transitions, 3146 flow [2023-01-27 23:16:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 23:16:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 23:16:53,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2670 transitions. [2023-01-27 23:16:53,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2680722891566265 [2023-01-27 23:16:53,582 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2670 transitions. [2023-01-27 23:16:53,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2670 transitions. [2023-01-27 23:16:53,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:16:53,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2670 transitions. [2023-01-27 23:16:53,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 111.25) internal successors, (2670), 24 states have internal predecessors, (2670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:53,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:53,594 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 415.0) internal successors, (10375), 25 states have internal predecessors, (10375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:53,594 INFO L175 Difference]: Start difference. First operand has 119 places, 188 transitions, 1999 flow. Second operand 24 states and 2670 transitions. [2023-01-27 23:16:53,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 272 transitions, 3146 flow [2023-01-27 23:16:53,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 272 transitions, 2957 flow, removed 88 selfloop flow, removed 2 redundant places. [2023-01-27 23:16:53,631 INFO L231 Difference]: Finished difference. Result has 144 places, 207 transitions, 2300 flow [2023-01-27 23:16:53,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=1866, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2300, PETRI_PLACES=144, PETRI_TRANSITIONS=207} [2023-01-27 23:16:53,631 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 123 predicate places. [2023-01-27 23:16:53,631 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 207 transitions, 2300 flow [2023-01-27 23:16:53,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:16:53,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:16:53,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:16:53,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-27 23:16:53,836 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 [2023-01-27 23:16:53,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:16:53,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:16:53,837 INFO L85 PathProgramCache]: Analyzing trace with hash -858716135, now seen corresponding path program 4 times [2023-01-27 23:16:53,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:16:53,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169933201] [2023-01-27 23:16:53,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:16:53,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:16:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:16:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:16:53,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:16:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169933201] [2023-01-27 23:16:53,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169933201] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:16:53,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826747870] [2023-01-27 23:16:53,955 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:16:53,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:16:53,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:16:53,956 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) [2023-01-27 23:16:53,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:16:54,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:16:54,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:16:54,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 23:16:54,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:16:54,333 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 23:16:54,333 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 21 [2023-01-27 23:16:54,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:16:54,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:16:54,559 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:16:54,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 230 treesize of output 230 [2023-01-27 23:17:20,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:17:20,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826747870] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:17:20,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:17:20,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-27 23:17:20,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652932775] [2023-01-27 23:17:20,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:17:20,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:17:20,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:17:20,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:17:20,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:17:20,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-27 23:17:20,941 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 207 transitions, 2300 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:20,941 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:17:20,941 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-27 23:17:20,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:17:21,994 INFO L130 PetriNetUnfolder]: 1162/2218 cut-off events. [2023-01-27 23:17:21,994 INFO L131 PetriNetUnfolder]: For 14660/14660 co-relation queries the response was YES. [2023-01-27 23:17:21,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12156 conditions, 2218 events. 1162/2218 cut-off events. For 14660/14660 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 14515 event pairs, 44 based on Foata normal form. 8/2225 useless extension candidates. Maximal degree in co-relation 11947. Up to 1107 conditions per place. [2023-01-27 23:17:22,007 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 193 selfloop transitions, 179 changer transitions 31/403 dead transitions. [2023-01-27 23:17:22,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 403 transitions, 4828 flow [2023-01-27 23:17:22,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 23:17:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 23:17:22,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3008 transitions. [2023-01-27 23:17:22,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2684515841142347 [2023-01-27 23:17:22,010 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3008 transitions. [2023-01-27 23:17:22,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3008 transitions. [2023-01-27 23:17:22,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:17:22,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3008 transitions. [2023-01-27 23:17:22,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 111.4074074074074) internal successors, (3008), 27 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:22,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 415.0) internal successors, (11620), 28 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:22,020 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 415.0) internal successors, (11620), 28 states have internal predecessors, (11620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:22,020 INFO L175 Difference]: Start difference. First operand has 144 places, 207 transitions, 2300 flow. Second operand 27 states and 3008 transitions. [2023-01-27 23:17:22,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 403 transitions, 4828 flow [2023-01-27 23:17:22,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 403 transitions, 4716 flow, removed 11 selfloop flow, removed 15 redundant places. [2023-01-27 23:17:22,077 INFO L231 Difference]: Finished difference. Result has 167 places, 290 transitions, 3841 flow [2023-01-27 23:17:22,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2200, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3841, PETRI_PLACES=167, PETRI_TRANSITIONS=290} [2023-01-27 23:17:22,077 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 146 predicate places. [2023-01-27 23:17:22,077 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 290 transitions, 3841 flow [2023-01-27 23:17:22,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:22,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:17:22,078 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:17:22,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-27 23:17:22,283 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 [2023-01-27 23:17:22,283 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:17:22,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:17:22,284 INFO L85 PathProgramCache]: Analyzing trace with hash -27525413, now seen corresponding path program 5 times [2023-01-27 23:17:22,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:17:22,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059585693] [2023-01-27 23:17:22,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:17:22,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:17:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:17:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:17:22,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:17:22,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059585693] [2023-01-27 23:17:22,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059585693] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:17:22,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119703914] [2023-01-27 23:17:22,437 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 23:17:22,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:17:22,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:17:22,438 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) [2023-01-27 23:17:22,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:17:22,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:17:22,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:17:22,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-27 23:17:22,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:17:22,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:17:22,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:17:22,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:17:22,705 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 [2023-01-27 23:17:22,903 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 23:17:22,903 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 163 treesize of output 152 [2023-01-27 23:17:22,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:17:22,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:17:23,775 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:17:23,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 89 [2023-01-27 23:17:23,793 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:17:23,793 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 808 treesize of output 688 [2023-01-27 23:17:23,822 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:17:23,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 144 treesize of output 148 [2023-01-27 23:17:23,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:17:23,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 81 [2023-01-27 23:17:24,329 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:17:24,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119703914] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:17:24,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:17:24,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 22 [2023-01-27 23:17:24,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61668957] [2023-01-27 23:17:24,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:17:24,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 23:17:24,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:17:24,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 23:17:24,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=382, Unknown=1, NotChecked=0, Total=462 [2023-01-27 23:17:24,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 415 [2023-01-27 23:17:24,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 290 transitions, 3841 flow. Second operand has 22 states, 22 states have (on average 101.18181818181819) internal successors, (2226), 22 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:24,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:17:24,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 415 [2023-01-27 23:17:24,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:17:31,113 WARN L222 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 62 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:17:44,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:17:51,398 WARN L222 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-27 23:17:56,799 INFO L130 PetriNetUnfolder]: 1340/2621 cut-off events. [2023-01-27 23:17:56,799 INFO L131 PetriNetUnfolder]: For 27203/27203 co-relation queries the response was YES. [2023-01-27 23:17:56,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 2621 events. 1340/2621 cut-off events. For 27203/27203 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 18013 event pairs, 105 based on Foata normal form. 36/2656 useless extension candidates. Maximal degree in co-relation 16504. Up to 1041 conditions per place. [2023-01-27 23:17:56,815 INFO L137 encePairwiseOnDemand]: 404/415 looper letters, 184 selfloop transitions, 141 changer transitions 232/557 dead transitions. [2023-01-27 23:17:56,815 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 557 transitions, 7621 flow [2023-01-27 23:17:56,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-27 23:17:56,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-27 23:17:56,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4419 transitions. [2023-01-27 23:17:56,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2535283993115318 [2023-01-27 23:17:56,820 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4419 transitions. [2023-01-27 23:17:56,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4419 transitions. [2023-01-27 23:17:56,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:17:56,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4419 transitions. [2023-01-27 23:17:56,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 105.21428571428571) internal successors, (4419), 42 states have internal predecessors, (4419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:56,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 415.0) internal successors, (17845), 43 states have internal predecessors, (17845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:56,833 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 415.0) internal successors, (17845), 43 states have internal predecessors, (17845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:56,833 INFO L175 Difference]: Start difference. First operand has 167 places, 290 transitions, 3841 flow. Second operand 42 states and 4419 transitions. [2023-01-27 23:17:56,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 557 transitions, 7621 flow [2023-01-27 23:17:56,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 557 transitions, 7091 flow, removed 167 selfloop flow, removed 13 redundant places. [2023-01-27 23:17:56,945 INFO L231 Difference]: Finished difference. Result has 207 places, 204 transitions, 2873 flow [2023-01-27 23:17:56,945 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=3518, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2873, PETRI_PLACES=207, PETRI_TRANSITIONS=204} [2023-01-27 23:17:56,945 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 186 predicate places. [2023-01-27 23:17:56,946 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 204 transitions, 2873 flow [2023-01-27 23:17:56,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 101.18181818181819) internal successors, (2226), 22 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:56,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:17:56,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:17:56,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-27 23:17:57,146 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 [2023-01-27 23:17:57,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:17:57,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:17:57,147 INFO L85 PathProgramCache]: Analyzing trace with hash 545860189, now seen corresponding path program 6 times [2023-01-27 23:17:57,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:17:57,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082542566] [2023-01-27 23:17:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:17:57,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:17:57,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:17:57,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:17:57,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:17:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082542566] [2023-01-27 23:17:57,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082542566] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:17:57,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271887422] [2023-01-27 23:17:57,282 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-27 23:17:57,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:17:57,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:17:57,283 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) [2023-01-27 23:17:57,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:17:57,371 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-27 23:17:57,371 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:17:57,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 26 conjunts are in the unsatisfiable core [2023-01-27 23:17:57,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:17:57,625 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:17:57,625 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 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 23 [2023-01-27 23:17:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:17:57,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:17:57,879 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:17:57,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 230 treesize of output 230 [2023-01-27 23:17:58,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:17:58,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271887422] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:17:58,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:17:58,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-01-27 23:17:58,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112360576] [2023-01-27 23:17:58,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:17:58,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 23:17:58,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:17:58,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 23:17:58,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2023-01-27 23:17:58,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 415 [2023-01-27 23:17:58,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 204 transitions, 2873 flow. Second operand has 17 states, 17 states have (on average 121.17647058823529) internal successors, (2060), 17 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:58,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:17:58,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 415 [2023-01-27 23:17:58,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:17:58,749 INFO L130 PetriNetUnfolder]: 617/1357 cut-off events. [2023-01-27 23:17:58,749 INFO L131 PetriNetUnfolder]: For 17023/17023 co-relation queries the response was YES. [2023-01-27 23:17:58,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1357 events. 617/1357 cut-off events. For 17023/17023 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 8865 event pairs, 22 based on Foata normal form. 9/1366 useless extension candidates. Maximal degree in co-relation 9100. Up to 591 conditions per place. [2023-01-27 23:17:58,758 INFO L137 encePairwiseOnDemand]: 407/415 looper letters, 171 selfloop transitions, 122 changer transitions 11/304 dead transitions. [2023-01-27 23:17:58,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 304 transitions, 4696 flow [2023-01-27 23:17:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-27 23:17:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-27 23:17:58,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1998 transitions. [2023-01-27 23:17:58,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3009036144578313 [2023-01-27 23:17:58,764 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1998 transitions. [2023-01-27 23:17:58,764 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1998 transitions. [2023-01-27 23:17:58,764 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:17:58,764 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1998 transitions. [2023-01-27 23:17:58,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 124.875) internal successors, (1998), 16 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:58,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:58,769 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 415.0) internal successors, (7055), 17 states have internal predecessors, (7055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:58,769 INFO L175 Difference]: Start difference. First operand has 207 places, 204 transitions, 2873 flow. Second operand 16 states and 1998 transitions. [2023-01-27 23:17:58,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 304 transitions, 4696 flow [2023-01-27 23:17:58,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 304 transitions, 3832 flow, removed 323 selfloop flow, removed 32 redundant places. [2023-01-27 23:17:58,837 INFO L231 Difference]: Finished difference. Result has 180 places, 230 transitions, 3091 flow [2023-01-27 23:17:58,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2335, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3091, PETRI_PLACES=180, PETRI_TRANSITIONS=230} [2023-01-27 23:17:58,837 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 159 predicate places. [2023-01-27 23:17:58,837 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 230 transitions, 3091 flow [2023-01-27 23:17:58,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.17647058823529) internal successors, (2060), 17 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:17:58,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:17:58,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:17:58,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 23:17:59,044 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 [2023-01-27 23:17:59,045 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:17:59,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:17:59,045 INFO L85 PathProgramCache]: Analyzing trace with hash 79837471, now seen corresponding path program 7 times [2023-01-27 23:17:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:17:59,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701455202] [2023-01-27 23:17:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:17:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:17:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:17:59,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:17:59,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:17:59,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701455202] [2023-01-27 23:17:59,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701455202] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:17:59,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685001556] [2023-01-27 23:17:59,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-27 23:17:59,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:17:59,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:17:59,153 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) [2023-01-27 23:17:59,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:17:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:17:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 30 conjunts are in the unsatisfiable core [2023-01-27 23:17:59,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:17:59,507 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-27 23:17:59,508 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 179 treesize of output 168 [2023-01-27 23:17:59,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:17:59,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:18:00,282 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:00,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 187 treesize of output 148 [2023-01-27 23:18:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:18:01,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685001556] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:18:01,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:18:01,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 20 [2023-01-27 23:18:01,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455558443] [2023-01-27 23:18:01,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:18:01,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:18:01,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:18:01,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:18:01,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:18:01,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 415 [2023-01-27 23:18:01,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 230 transitions, 3091 flow. Second operand has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:01,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:18:01,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 415 [2023-01-27 23:18:01,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:18:02,258 INFO L130 PetriNetUnfolder]: 603/1318 cut-off events. [2023-01-27 23:18:02,258 INFO L131 PetriNetUnfolder]: For 11795/11795 co-relation queries the response was YES. [2023-01-27 23:18:02,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8178 conditions, 1318 events. 603/1318 cut-off events. For 11795/11795 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 8488 event pairs, 49 based on Foata normal form. 9/1327 useless extension candidates. Maximal degree in co-relation 8116. Up to 1057 conditions per place. [2023-01-27 23:18:02,265 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 189 selfloop transitions, 77 changer transitions 8/274 dead transitions. [2023-01-27 23:18:02,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 274 transitions, 3864 flow [2023-01-27 23:18:02,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-01-27 23:18:02,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-01-27 23:18:02,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2111 transitions. [2023-01-27 23:18:02,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26772352568167407 [2023-01-27 23:18:02,268 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2111 transitions. [2023-01-27 23:18:02,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2111 transitions. [2023-01-27 23:18:02,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:18:02,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2111 transitions. [2023-01-27 23:18:02,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 111.10526315789474) internal successors, (2111), 19 states have internal predecessors, (2111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:02,273 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 415.0) internal successors, (8300), 20 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:02,274 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 415.0) internal successors, (8300), 20 states have internal predecessors, (8300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:02,274 INFO L175 Difference]: Start difference. First operand has 180 places, 230 transitions, 3091 flow. Second operand 19 states and 2111 transitions. [2023-01-27 23:18:02,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 274 transitions, 3864 flow [2023-01-27 23:18:02,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 274 transitions, 3599 flow, removed 74 selfloop flow, removed 9 redundant places. [2023-01-27 23:18:02,321 INFO L231 Difference]: Finished difference. Result has 188 places, 229 transitions, 3009 flow [2023-01-27 23:18:02,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2822, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3009, PETRI_PLACES=188, PETRI_TRANSITIONS=229} [2023-01-27 23:18:02,322 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 167 predicate places. [2023-01-27 23:18:02,322 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 229 transitions, 3009 flow [2023-01-27 23:18:02,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 108.4) internal successors, (2168), 20 states have internal predecessors, (2168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:02,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:18:02,322 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:18:02,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-27 23:18:02,527 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 [2023-01-27 23:18:02,527 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:18:02,527 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:18:02,527 INFO L85 PathProgramCache]: Analyzing trace with hash -755230754, now seen corresponding path program 1 times [2023-01-27 23:18:02,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:18:02,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664400052] [2023-01-27 23:18:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:18:02,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:18:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:18:02,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:18:02,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:18:02,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664400052] [2023-01-27 23:18:02,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664400052] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:18:02,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298332873] [2023-01-27 23:18:02,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:18:02,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:18:02,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:18:02,695 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) [2023-01-27 23:18:02,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 23:18:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:18:02,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 44 conjunts are in the unsatisfiable core [2023-01-27 23:18:02,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:18:02,779 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 14 treesize of output 12 [2023-01-27 23:18:02,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:18:02,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:18:02,856 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-01-27 23:18:03,159 INFO L321 Elim1Store]: treesize reduction 83, result has 10.8 percent of original size [2023-01-27 23:18:03,159 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 8 new quantified variables, introduced 10 case distinctions, treesize of input 347 treesize of output 215 [2023-01-27 23:18:03,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:18:03,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:18:03,928 WARN L839 $PredicateComparison]: unable to prove that (forall ((~x2~0 Int) (v_ArrVal_387 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_387) c_~f~0.base))) (let ((.cse2 (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (let ((.cse1 (select .cse0 (+ c_~f~0.offset (* .cse2 4))))) (or (= (select .cse0 (+ (* 4 .cse1) c_~f~0.offset)) (select .cse0 (+ (* c_~x1~0 4) c_~f~0.offset))) (<= c_~size~0 .cse2) (< .cse2 0) (< .cse1 0) (<= c_~size~0 .cse1)))))) is different from false [2023-01-27 23:18:04,018 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:04,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 276 treesize of output 168 [2023-01-27 23:18:04,049 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:04,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 466 treesize of output 466 [2023-01-27 23:18:04,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:04,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 386 treesize of output 346 [2023-01-27 23:18:04,138 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:04,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 161 treesize of output 181 [2023-01-27 23:18:06,578 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-01-27 23:18:06,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:18:06,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298332873] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:18:06,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:18:06,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 7] total 20 [2023-01-27 23:18:06,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575055306] [2023-01-27 23:18:06,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:18:06,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:18:06,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:18:06,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:18:06,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=282, Unknown=1, NotChecked=34, Total=380 [2023-01-27 23:18:06,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 415 [2023-01-27 23:18:06,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 229 transitions, 3009 flow. Second operand has 20 states, 20 states have (on average 81.55) internal successors, (1631), 20 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:06,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:18:06,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 415 [2023-01-27 23:18:06,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:18:08,036 INFO L130 PetriNetUnfolder]: 608/1326 cut-off events. [2023-01-27 23:18:08,037 INFO L131 PetriNetUnfolder]: For 11486/11486 co-relation queries the response was YES. [2023-01-27 23:18:08,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8060 conditions, 1326 events. 608/1326 cut-off events. For 11486/11486 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8578 event pairs, 70 based on Foata normal form. 17/1343 useless extension candidates. Maximal degree in co-relation 7999. Up to 877 conditions per place. [2023-01-27 23:18:08,044 INFO L137 encePairwiseOnDemand]: 405/415 looper letters, 187 selfloop transitions, 54 changer transitions 50/291 dead transitions. [2023-01-27 23:18:08,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 291 transitions, 3925 flow [2023-01-27 23:18:08,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-01-27 23:18:08,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-01-27 23:18:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1941 transitions. [2023-01-27 23:18:08,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.20335254059717128 [2023-01-27 23:18:08,047 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1941 transitions. [2023-01-27 23:18:08,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1941 transitions. [2023-01-27 23:18:08,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:18:08,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1941 transitions. [2023-01-27 23:18:08,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 84.3913043478261) internal successors, (1941), 23 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:08,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 415.0) internal successors, (9960), 24 states have internal predecessors, (9960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:08,053 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 415.0) internal successors, (9960), 24 states have internal predecessors, (9960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:08,053 INFO L175 Difference]: Start difference. First operand has 188 places, 229 transitions, 3009 flow. Second operand 23 states and 1941 transitions. [2023-01-27 23:18:08,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 291 transitions, 3925 flow [2023-01-27 23:18:08,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 291 transitions, 3838 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-01-27 23:18:08,095 INFO L231 Difference]: Finished difference. Result has 200 places, 204 transitions, 2756 flow [2023-01-27 23:18:08,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2922, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2756, PETRI_PLACES=200, PETRI_TRANSITIONS=204} [2023-01-27 23:18:08,096 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 179 predicate places. [2023-01-27 23:18:08,096 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 204 transitions, 2756 flow [2023-01-27 23:18:08,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 81.55) internal successors, (1631), 20 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:08,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:18:08,096 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:18:08,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-27 23:18:08,300 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 [2023-01-27 23:18:08,300 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:18:08,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:18:08,301 INFO L85 PathProgramCache]: Analyzing trace with hash -266355903, now seen corresponding path program 8 times [2023-01-27 23:18:08,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:18:08,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651068586] [2023-01-27 23:18:08,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:18:08,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:18:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:18:08,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:18:08,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:18:08,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651068586] [2023-01-27 23:18:08,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651068586] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:18:08,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754338366] [2023-01-27 23:18:08,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:18:08,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:18:08,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:18:08,412 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) [2023-01-27 23:18:08,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-27 23:18:08,491 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:18:08,491 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:18:08,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 23:18:08,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:18:08,769 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-01-27 23:18:08,769 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 179 treesize of output 165 [2023-01-27 23:18:08,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:18:08,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:18:09,480 INFO L321 Elim1Store]: treesize reduction 5, result has 84.8 percent of original size [2023-01-27 23:18:09,480 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 42 [2023-01-27 23:18:09,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:18:09,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754338366] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:18:09,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:18:09,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 17 [2023-01-27 23:18:09,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704650098] [2023-01-27 23:18:09,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:18:09,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-01-27 23:18:09,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:18:09,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-01-27 23:18:09,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-01-27 23:18:09,511 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 415 [2023-01-27 23:18:09,512 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 204 transitions, 2756 flow. Second operand has 17 states, 17 states have (on average 121.23529411764706) internal successors, (2061), 17 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:09,512 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:18:09,512 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 415 [2023-01-27 23:18:09,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:18:13,480 INFO L130 PetriNetUnfolder]: 811/1672 cut-off events. [2023-01-27 23:18:13,481 INFO L131 PetriNetUnfolder]: For 17688/17688 co-relation queries the response was YES. [2023-01-27 23:18:13,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10795 conditions, 1672 events. 811/1672 cut-off events. For 17688/17688 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10840 event pairs, 71 based on Foata normal form. 12/1684 useless extension candidates. Maximal degree in co-relation 10731. Up to 508 conditions per place. [2023-01-27 23:18:13,491 INFO L137 encePairwiseOnDemand]: 406/415 looper letters, 219 selfloop transitions, 173 changer transitions 17/409 dead transitions. [2023-01-27 23:18:13,491 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 409 transitions, 5455 flow [2023-01-27 23:18:13,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-01-27 23:18:13,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-01-27 23:18:13,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3784 transitions. [2023-01-27 23:18:13,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039357429718875 [2023-01-27 23:18:13,495 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3784 transitions. [2023-01-27 23:18:13,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3784 transitions. [2023-01-27 23:18:13,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:18:13,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3784 transitions. [2023-01-27 23:18:13,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 126.13333333333334) internal successors, (3784), 30 states have internal predecessors, (3784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:13,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 415.0) internal successors, (12865), 31 states have internal predecessors, (12865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:13,504 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 415.0) internal successors, (12865), 31 states have internal predecessors, (12865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:13,504 INFO L175 Difference]: Start difference. First operand has 200 places, 204 transitions, 2756 flow. Second operand 30 states and 3784 transitions. [2023-01-27 23:18:13,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 409 transitions, 5455 flow [2023-01-27 23:18:13,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 409 transitions, 4943 flow, removed 55 selfloop flow, removed 25 redundant places. [2023-01-27 23:18:13,572 INFO L231 Difference]: Finished difference. Result has 203 places, 275 transitions, 4049 flow [2023-01-27 23:18:13,572 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=415, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=4049, PETRI_PLACES=203, PETRI_TRANSITIONS=275} [2023-01-27 23:18:13,573 INFO L281 CegarLoopForPetriNet]: 21 programPoint places, 182 predicate places. [2023-01-27 23:18:13,573 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 275 transitions, 4049 flow [2023-01-27 23:18:13,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.23529411764706) internal successors, (2061), 17 states have internal predecessors, (2061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:18:13,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:18:13,573 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:18:13,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-27 23:18:13,778 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 [2023-01-27 23:18:13,778 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 23:18:13,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:18:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1923795003, now seen corresponding path program 9 times [2023-01-27 23:18:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:18:13,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926043547] [2023-01-27 23:18:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:18:13,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:18:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:18:13,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:18:13,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:18:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926043547] [2023-01-27 23:18:13,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926043547] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:18:13,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985134910] [2023-01-27 23:18:13,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:18:13,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:18:13,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:18:13,913 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) [2023-01-27 23:18:13,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-27 23:18:13,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 23:18:13,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:18:13,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 27 conjunts are in the unsatisfiable core [2023-01-27 23:18:13,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:18:14,229 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:14,229 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 179 treesize of output 173 [2023-01-27 23:18:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-27 23:18:14,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:18:14,889 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:18:14,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 170 treesize of output 139 [2023-01-27 23:24:37,284 WARN L222 SmtUtils]: Spent 6.17m on a formula simplification. DAG size of input: 5890 DAG size of output: 5339 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-27 23:30:12,996 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 [2023-01-27 23:30:13,030 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 [2023-01-27 23:30:13,628 WARN L238 SmtUtils]: Removed 2 from assertion stack [2023-01-27 23:30:13,630 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-27 23:30:13,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-27 23:30:13,830 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 [2023-01-27 23:30:13,830 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 23 for 756ms.. [2023-01-27 23:30:13,831 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-27 23:30:13,832 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-27 23:30:13,832 INFO L445 BasicCegarLoop]: Path program histogram: [9, 6, 1, 1, 1] [2023-01-27 23:30:13,834 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 23:30:13,834 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 23:30:13,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 11:30:13 BasicIcfg [2023-01-27 23:30:13,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 23:30:13,836 INFO L158 Benchmark]: Toolchain (without parser) took 865898.38ms. Allocated memory was 348.1MB in the beginning and 725.6MB in the end (delta: 377.5MB). Free memory was 314.3MB in the beginning and 427.2MB in the end (delta: -112.8MB). Peak memory consumption was 441.0MB. Max. memory is 16.0GB. [2023-01-27 23:30:13,836 INFO L158 Benchmark]: CDTParser took 0.74ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:30:13,836 INFO L158 Benchmark]: CACSL2BoogieTranslator took 161.19ms. Allocated memory is still 348.1MB. Free memory was 313.9MB in the beginning and 302.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 23:30:13,836 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.00ms. Allocated memory is still 348.1MB. Free memory was 302.6MB in the beginning and 300.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 23:30:13,836 INFO L158 Benchmark]: Boogie Preprocessor took 23.21ms. Allocated memory is still 348.1MB. Free memory was 300.6MB in the beginning and 299.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 23:30:13,836 INFO L158 Benchmark]: RCFGBuilder took 390.83ms. Allocated memory is still 348.1MB. Free memory was 299.0MB in the beginning and 280.9MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 23:30:13,836 INFO L158 Benchmark]: TraceAbstraction took 865296.44ms. Allocated memory was 348.1MB in the beginning and 725.6MB in the end (delta: 377.5MB). Free memory was 280.1MB in the beginning and 427.2MB in the end (delta: -147.0MB). Peak memory consumption was 407.4MB. Max. memory is 16.0GB. [2023-01-27 23:30:13,837 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74ms. Allocated memory is still 255.9MB. Free memory is still 213.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 161.19ms. Allocated memory is still 348.1MB. Free memory was 313.9MB in the beginning and 302.6MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.00ms. Allocated memory is still 348.1MB. Free memory was 302.6MB in the beginning and 300.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.21ms. Allocated memory is still 348.1MB. Free memory was 300.6MB in the beginning and 299.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 390.83ms. Allocated memory is still 348.1MB. Free memory was 299.0MB in the beginning and 280.9MB in the end (delta: 18.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 865296.44ms. Allocated memory was 348.1MB in the beginning and 725.6MB in the end (delta: 377.5MB). Free memory was 280.1MB in the beginning and 427.2MB in the end (delta: -147.0MB). Peak memory consumption was 407.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.6s, 173 PlacesBefore, 21 PlacesAfterwards, 184 TransitionsBefore, 17 TransitionsAfterwards, 4092 CoEnabledTransitionPairs, 8 FixpointIterations, 68 TrivialSequentialCompositions, 89 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 32 ConcurrentYvCompositions, 15 ChoiceCompositions, 221 TotalNumberOfCompositions, 4038 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3920, independent: 3909, independent conditional: 0, independent unconditional: 3909, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2378, independent: 2373, independent conditional: 0, independent unconditional: 2373, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3920, independent: 1536, independent conditional: 0, independent unconditional: 1536, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 2378, unknown conditional: 0, unknown unconditional: 2378] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 19, Positive conditional cache size: 0, Positive unconditional cache size: 19, Negative cache size: 1, Negative conditional cache size: 0, Negative unconditional cache size: 1, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 23 for 756ms.. - TimeoutResultAtElement [Line: 94]: 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 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 23 for 756ms.. - TimeoutResultAtElement [Line: 93]: 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 18 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 23 for 756ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 263 locations, 3 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: 865.2s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 71.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 29 mSolverCounterUnknown, 1494 SdHoareTripleChecker+Valid, 10.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1494 mSDsluCounter, 391 SdHoareTripleChecker+Invalid, 9.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 115 IncrementalHoareTripleChecker+Unchecked, 324 mSDsCounter, 353 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6246 IncrementalHoareTripleChecker+Invalid, 6743 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 353 mSolverCounterUnsat, 67 mSDtfsCounter, 6246 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 680 GetRequests, 316 SyntacticMatches, 1 SemanticMatches, 363 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2943 ImplicationChecksByTransitivity, 60.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4049occurred in iteration=17, InterpolantAutomatonStates: 287, 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: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 65.2s InterpolantComputationTime, 428 NumberOfCodeBlocks, 428 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 553 ConstructedInterpolants, 18 QuantifiedInterpolants, 10710 SizeOfPredicates, 268 NumberOfNonLiveVariables, 1643 ConjunctsInSsa, 320 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 30/75 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