/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-11 20:18:01,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-11 20:18:01,341 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-11 20:18:01,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-11 20:18:01,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-11 20:18:01,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-11 20:18:01,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-11 20:18:01,362 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-11 20:18:01,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-11 20:18:01,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-11 20:18:01,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-11 20:18:01,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-11 20:18:01,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-11 20:18:01,365 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-11 20:18:01,366 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-11 20:18:01,367 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-11 20:18:01,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-11 20:18:01,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-11 20:18:01,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-11 20:18:01,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-11 20:18:01,371 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-11 20:18:01,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-11 20:18:01,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-11 20:18:01,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-11 20:18:01,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-11 20:18:01,375 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-11 20:18:01,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-11 20:18:01,376 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-11 20:18:01,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-11 20:18:01,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-11 20:18:01,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-11 20:18:01,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-11 20:18:01,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-11 20:18:01,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-11 20:18:01,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-11 20:18:01,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-11 20:18:01,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-11 20:18:01,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-11 20:18:01,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-11 20:18:01,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-11 20:18:01,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-11 20:18:01,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-11 20:18:01,397 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-11 20:18:01,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-11 20:18:01,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-11 20:18:01,398 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-11 20:18:01,398 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * Use SBE=true [2022-12-11 20:18:01,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-11 20:18:01,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-11 20:18:01,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-11 20:18:01,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:18:01,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-11 20:18:01,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-11 20:18:01,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-11 20:18:01,618 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-11 20:18:01,620 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-11 20:18:01,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-11 20:18:01,621 INFO L275 PluginConnector]: CDTParser initialized [2022-12-11 20:18:01,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-4.wvr.c [2022-12-11 20:18:02,667 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-11 20:18:02,866 INFO L351 CDTParser]: Found 1 translation units. [2022-12-11 20:18:02,867 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c [2022-12-11 20:18:02,871 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2caa5ef/784f83e090d7491280bd38646675c8d4/FLAG342d81d31 [2022-12-11 20:18:02,886 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2b2caa5ef/784f83e090d7491280bd38646675c8d4 [2022-12-11 20:18:02,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-11 20:18:02,889 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-11 20:18:02,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-11 20:18:02,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-11 20:18:02,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-11 20:18:02,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:18:02" (1/1) ... [2022-12-11 20:18:02,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddb1f1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:02, skipping insertion in model container [2022-12-11 20:18:02,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.12 08:18:02" (1/1) ... [2022-12-11 20:18:02,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-11 20:18:02,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-11 20:18:03,047 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c[2572,2585] [2022-12-11 20:18:03,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:18:03,058 INFO L203 MainTranslator]: Completed pre-run [2022-12-11 20:18:03,072 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-4.wvr.c[2572,2585] [2022-12-11 20:18:03,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-11 20:18:03,084 INFO L208 MainTranslator]: Completed translation [2022-12-11 20:18:03,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03 WrapperNode [2022-12-11 20:18:03,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-11 20:18:03,085 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-11 20:18:03,085 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-11 20:18:03,085 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-11 20:18:03,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,132 INFO L138 Inliner]: procedures = 24, calls = 36, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 154 [2022-12-11 20:18:03,132 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-11 20:18:03,133 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-11 20:18:03,133 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-11 20:18:03,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-11 20:18:03,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,142 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,142 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,146 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,152 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-11 20:18:03,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-11 20:18:03,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-11 20:18:03,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-11 20:18:03,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (1/1) ... [2022-12-11 20:18:03,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-11 20:18:03,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:18:03,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-11 20:18:03,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-11 20:18:03,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-11 20:18:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-11 20:18:03,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-11 20:18:03,212 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-11 20:18:03,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-11 20:18:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-11 20:18:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-11 20:18:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-11 20:18:03,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-11 20:18:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-11 20:18:03,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-11 20:18:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-11 20:18:03,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-11 20:18:03,219 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-11 20:18:03,291 INFO L236 CfgBuilder]: Building ICFG [2022-12-11 20:18:03,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-11 20:18:03,531 INFO L277 CfgBuilder]: Performing block encoding [2022-12-11 20:18:03,537 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-11 20:18:03,537 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-11 20:18:03,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:18:03 BoogieIcfgContainer [2022-12-11 20:18:03,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-11 20:18:03,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-11 20:18:03,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-11 20:18:03,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-11 20:18:03,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.12 08:18:02" (1/3) ... [2022-12-11 20:18:03,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bea68f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:18:03, skipping insertion in model container [2022-12-11 20:18:03,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.12 08:18:03" (2/3) ... [2022-12-11 20:18:03,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bea68f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.12 08:18:03, skipping insertion in model container [2022-12-11 20:18:03,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.12 08:18:03" (3/3) ... [2022-12-11 20:18:03,546 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-4.wvr.c [2022-12-11 20:18:03,559 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-11 20:18:03,559 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-11 20:18:03,560 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-11 20:18:03,619 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-11 20:18:03,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 180 transitions, 376 flow [2022-12-11 20:18:03,741 INFO L130 PetriNetUnfolder]: 16/178 cut-off events. [2022-12-11 20:18:03,741 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:18:03,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 178 events. 16/178 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 161 event pairs, 0 based on Foata normal form. 0/161 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2022-12-11 20:18:03,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 180 transitions, 376 flow [2022-12-11 20:18:03,758 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 170 transitions, 352 flow [2022-12-11 20:18:03,769 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-11 20:18:03,774 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;@12dc1e75, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-11 20:18:03,775 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-11 20:18:03,809 INFO L130 PetriNetUnfolder]: 13/140 cut-off events. [2022-12-11 20:18:03,810 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-11 20:18:03,810 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:03,811 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:03,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:03,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:03,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1113505846, now seen corresponding path program 1 times [2022-12-11 20:18:03,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:03,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532272340] [2022-12-11 20:18:03,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:03,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:03,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:04,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:18:04,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:04,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532272340] [2022-12-11 20:18:04,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532272340] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:18:04,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:18:04,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-11 20:18:04,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125958339] [2022-12-11 20:18:04,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:04,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-11 20:18:04,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:04,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-11 20:18:04,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:18:04,418 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 180 [2022-12-11 20:18:04,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 170 transitions, 352 flow. Second operand has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:04,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:04,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 180 [2022-12-11 20:18:04,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:04,617 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2022-12-11 20:18:04,617 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-12-11 20:18:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 418 conditions, 316 events. 24/316 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 788 event pairs, 9 based on Foata normal form. 34/318 useless extension candidates. Maximal degree in co-relation 258. Up to 67 conditions per place. [2022-12-11 20:18:04,625 INFO L137 encePairwiseOnDemand]: 159/180 looper letters, 38 selfloop transitions, 7 changer transitions 5/161 dead transitions. [2022-12-11 20:18:04,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 161 transitions, 434 flow [2022-12-11 20:18:04,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-11 20:18:04,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-11 20:18:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1025 transitions. [2022-12-11 20:18:04,640 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7118055555555556 [2022-12-11 20:18:04,641 INFO L175 Difference]: Start difference. First operand has 161 places, 170 transitions, 352 flow. Second operand 8 states and 1025 transitions. [2022-12-11 20:18:04,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 161 transitions, 434 flow [2022-12-11 20:18:04,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 161 transitions, 426 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-11 20:18:04,650 INFO L231 Difference]: Finished difference. Result has 165 places, 153 transitions, 330 flow [2022-12-11 20:18:04,652 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=330, PETRI_PLACES=165, PETRI_TRANSITIONS=153} [2022-12-11 20:18:04,659 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 4 predicate places. [2022-12-11 20:18:04,660 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 153 transitions, 330 flow [2022-12-11 20:18:04,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:04,661 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:04,661 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:04,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-11 20:18:04,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:04,663 INFO L85 PathProgramCache]: Analyzing trace with hash -345150957, now seen corresponding path program 1 times [2022-12-11 20:18:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202878758] [2022-12-11 20:18:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:04,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:04,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:04,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202878758] [2022-12-11 20:18:04,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202878758] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:18:04,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:18:04,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-11 20:18:04,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345705098] [2022-12-11 20:18:04,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:04,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-11 20:18:04,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:04,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-11 20:18:04,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-11 20:18:04,951 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 180 [2022-12-11 20:18:04,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 153 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:04,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:04,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 180 [2022-12-11 20:18:04,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:05,138 INFO L130 PetriNetUnfolder]: 121/734 cut-off events. [2022-12-11 20:18:05,138 INFO L131 PetriNetUnfolder]: For 34/35 co-relation queries the response was YES. [2022-12-11 20:18:05,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1025 conditions, 734 events. 121/734 cut-off events. For 34/35 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3997 event pairs, 38 based on Foata normal form. 1/677 useless extension candidates. Maximal degree in co-relation 951. Up to 133 conditions per place. [2022-12-11 20:18:05,142 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 65 selfloop transitions, 5 changer transitions 4/186 dead transitions. [2022-12-11 20:18:05,142 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 186 transitions, 549 flow [2022-12-11 20:18:05,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 20:18:05,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 20:18:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 795 transitions. [2022-12-11 20:18:05,148 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7361111111111112 [2022-12-11 20:18:05,149 INFO L175 Difference]: Start difference. First operand has 165 places, 153 transitions, 330 flow. Second operand 6 states and 795 transitions. [2022-12-11 20:18:05,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 186 transitions, 549 flow [2022-12-11 20:18:05,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 186 transitions, 537 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-12-11 20:18:05,159 INFO L231 Difference]: Finished difference. Result has 162 places, 156 transitions, 347 flow [2022-12-11 20:18:05,159 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=162, PETRI_TRANSITIONS=156} [2022-12-11 20:18:05,160 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 1 predicate places. [2022-12-11 20:18:05,160 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 156 transitions, 347 flow [2022-12-11 20:18:05,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.33333333333333) internal successors, (746), 6 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:05,160 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:05,161 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:05,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-11 20:18:05,161 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:05,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:05,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1651727151, now seen corresponding path program 1 times [2022-12-11 20:18:05,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:05,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951191641] [2022-12-11 20:18:05,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:05,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:05,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:05,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:05,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951191641] [2022-12-11 20:18:05,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951191641] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:18:05,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938586962] [2022-12-11 20:18:05,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:05,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:05,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:18:05,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:18:05,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-11 20:18:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:05,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 20:18:05,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:18:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:05,602 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:18:05,673 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:05,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938586962] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-11 20:18:05,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-11 20:18:05,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 9 [2022-12-11 20:18:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741298849] [2022-12-11 20:18:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:05,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:18:05,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:05,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:18:05,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-12-11 20:18:05,677 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 180 [2022-12-11 20:18:05,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 156 transitions, 347 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:05,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:05,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 180 [2022-12-11 20:18:05,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:05,793 INFO L130 PetriNetUnfolder]: 113/767 cut-off events. [2022-12-11 20:18:05,793 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2022-12-11 20:18:05,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 767 events. 113/767 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3996 event pairs, 8 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 1019. Up to 143 conditions per place. [2022-12-11 20:18:05,798 INFO L137 encePairwiseOnDemand]: 175/180 looper letters, 26 selfloop transitions, 5 changer transitions 1/168 dead transitions. [2022-12-11 20:18:05,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 168 transitions, 439 flow [2022-12-11 20:18:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 20:18:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 20:18:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2022-12-11 20:18:05,800 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8569444444444444 [2022-12-11 20:18:05,800 INFO L175 Difference]: Start difference. First operand has 162 places, 156 transitions, 347 flow. Second operand 4 states and 617 transitions. [2022-12-11 20:18:05,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 168 transitions, 439 flow [2022-12-11 20:18:05,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 168 transitions, 435 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-12-11 20:18:05,805 INFO L231 Difference]: Finished difference. Result has 164 places, 160 transitions, 379 flow [2022-12-11 20:18:05,805 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=379, PETRI_PLACES=164, PETRI_TRANSITIONS=160} [2022-12-11 20:18:05,806 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 3 predicate places. [2022-12-11 20:18:05,806 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 160 transitions, 379 flow [2022-12-11 20:18:05,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:05,809 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:05,809 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:05,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-11 20:18:06,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:06,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:06,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:06,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2085352925, now seen corresponding path program 2 times [2022-12-11 20:18:06,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:06,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476636179] [2022-12-11 20:18:06,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:06,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:06,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:06,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:06,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476636179] [2022-12-11 20:18:06,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476636179] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:18:06,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:18:06,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-11 20:18:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858344962] [2022-12-11 20:18:06,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:06,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-11 20:18:06,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:06,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-11 20:18:06,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-11 20:18:06,147 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 180 [2022-12-11 20:18:06,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 160 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:06,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:06,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 180 [2022-12-11 20:18:06,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:06,300 INFO L130 PetriNetUnfolder]: 154/1085 cut-off events. [2022-12-11 20:18:06,300 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2022-12-11 20:18:06,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1647 conditions, 1085 events. 154/1085 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6232 event pairs, 63 based on Foata normal form. 3/1020 useless extension candidates. Maximal degree in co-relation 1575. Up to 241 conditions per place. [2022-12-11 20:18:06,304 INFO L137 encePairwiseOnDemand]: 173/180 looper letters, 37 selfloop transitions, 6 changer transitions 4/180 dead transitions. [2022-12-11 20:18:06,304 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 180 transitions, 534 flow [2022-12-11 20:18:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-11 20:18:06,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-11 20:18:06,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 902 transitions. [2022-12-11 20:18:06,306 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8351851851851851 [2022-12-11 20:18:06,306 INFO L175 Difference]: Start difference. First operand has 164 places, 160 transitions, 379 flow. Second operand 6 states and 902 transitions. [2022-12-11 20:18:06,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 180 transitions, 534 flow [2022-12-11 20:18:06,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 180 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-12-11 20:18:06,309 INFO L231 Difference]: Finished difference. Result has 172 places, 162 transitions, 418 flow [2022-12-11 20:18:06,309 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=418, PETRI_PLACES=172, PETRI_TRANSITIONS=162} [2022-12-11 20:18:06,309 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 11 predicate places. [2022-12-11 20:18:06,310 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 162 transitions, 418 flow [2022-12-11 20:18:06,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:06,310 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:06,310 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:06,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-11 20:18:06,310 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:06,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:06,311 INFO L85 PathProgramCache]: Analyzing trace with hash 691367043, now seen corresponding path program 3 times [2022-12-11 20:18:06,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:06,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328039538] [2022-12-11 20:18:06,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:06,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:06,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:06,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:06,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328039538] [2022-12-11 20:18:06,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328039538] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:18:06,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291489624] [2022-12-11 20:18:06,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:18:06,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:06,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:18:06,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:18:06,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-11 20:18:06,592 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 20:18:06,592 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:18:06,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-11 20:18:06,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:18:06,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:06,685 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-11 20:18:06,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291489624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:18:06,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-11 20:18:06,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-12-11 20:18:06,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167372715] [2022-12-11 20:18:06,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:06,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:18:06,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:06,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:18:06,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-11 20:18:06,687 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 180 [2022-12-11 20:18:06,688 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 162 transitions, 418 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:06,688 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:06,688 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 180 [2022-12-11 20:18:06,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:06,780 INFO L130 PetriNetUnfolder]: 127/846 cut-off events. [2022-12-11 20:18:06,781 INFO L131 PetriNetUnfolder]: For 364/378 co-relation queries the response was YES. [2022-12-11 20:18:06,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 846 events. 127/846 cut-off events. For 364/378 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4422 event pairs, 45 based on Foata normal form. 4/798 useless extension candidates. Maximal degree in co-relation 1314. Up to 190 conditions per place. [2022-12-11 20:18:06,785 INFO L137 encePairwiseOnDemand]: 175/180 looper letters, 28 selfloop transitions, 7 changer transitions 2/173 dead transitions. [2022-12-11 20:18:06,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 173 transitions, 539 flow [2022-12-11 20:18:06,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 20:18:06,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 20:18:06,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2022-12-11 20:18:06,786 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8569444444444444 [2022-12-11 20:18:06,786 INFO L175 Difference]: Start difference. First operand has 172 places, 162 transitions, 418 flow. Second operand 4 states and 617 transitions. [2022-12-11 20:18:06,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 173 transitions, 539 flow [2022-12-11 20:18:06,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 173 transitions, 528 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-11 20:18:06,790 INFO L231 Difference]: Finished difference. Result has 172 places, 164 transitions, 445 flow [2022-12-11 20:18:06,790 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=445, PETRI_PLACES=172, PETRI_TRANSITIONS=164} [2022-12-11 20:18:06,791 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 11 predicate places. [2022-12-11 20:18:06,791 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 164 transitions, 445 flow [2022-12-11 20:18:06,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:06,791 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:06,791 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:06,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-11 20:18:06,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:06,997 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:06,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:06,998 INFO L85 PathProgramCache]: Analyzing trace with hash -709810090, now seen corresponding path program 1 times [2022-12-11 20:18:06,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:06,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791492596] [2022-12-11 20:18:06,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:06,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:07,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:07,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791492596] [2022-12-11 20:18:07,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791492596] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:18:07,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:18:07,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 20:18:07,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943669281] [2022-12-11 20:18:07,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:07,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:18:07,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:07,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:18:07,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-11 20:18:07,138 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 180 [2022-12-11 20:18:07,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 164 transitions, 445 flow. Second operand has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:07,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:07,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 180 [2022-12-11 20:18:07,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:07,223 INFO L130 PetriNetUnfolder]: 63/649 cut-off events. [2022-12-11 20:18:07,223 INFO L131 PetriNetUnfolder]: For 320/338 co-relation queries the response was YES. [2022-12-11 20:18:07,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 649 events. 63/649 cut-off events. For 320/338 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2699 event pairs, 8 based on Foata normal form. 21/625 useless extension candidates. Maximal degree in co-relation 959. Up to 79 conditions per place. [2022-12-11 20:18:07,226 INFO L137 encePairwiseOnDemand]: 174/180 looper letters, 27 selfloop transitions, 5 changer transitions 1/177 dead transitions. [2022-12-11 20:18:07,226 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 177 transitions, 571 flow [2022-12-11 20:18:07,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-11 20:18:07,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-11 20:18:07,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 786 transitions. [2022-12-11 20:18:07,228 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8733333333333333 [2022-12-11 20:18:07,228 INFO L175 Difference]: Start difference. First operand has 172 places, 164 transitions, 445 flow. Second operand 5 states and 786 transitions. [2022-12-11 20:18:07,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 177 transitions, 571 flow [2022-12-11 20:18:07,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 177 transitions, 551 flow, removed 7 selfloop flow, removed 3 redundant places. [2022-12-11 20:18:07,233 INFO L231 Difference]: Finished difference. Result has 174 places, 166 transitions, 453 flow [2022-12-11 20:18:07,233 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=174, PETRI_TRANSITIONS=166} [2022-12-11 20:18:07,235 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 13 predicate places. [2022-12-11 20:18:07,235 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 166 transitions, 453 flow [2022-12-11 20:18:07,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:07,236 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:07,236 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:07,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-11 20:18:07,236 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:07,237 INFO L85 PathProgramCache]: Analyzing trace with hash -353639250, now seen corresponding path program 2 times [2022-12-11 20:18:07,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:07,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977185169] [2022-12-11 20:18:07,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:07,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:07,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:07,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:07,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977185169] [2022-12-11 20:18:07,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977185169] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-11 20:18:07,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-11 20:18:07,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-11 20:18:07,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399429794] [2022-12-11 20:18:07,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-11 20:18:07,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-11 20:18:07,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:07,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-11 20:18:07,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-11 20:18:07,333 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 180 [2022-12-11 20:18:07,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 166 transitions, 453 flow. Second operand has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:07,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:07,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 180 [2022-12-11 20:18:07,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:07,411 INFO L130 PetriNetUnfolder]: 70/749 cut-off events. [2022-12-11 20:18:07,412 INFO L131 PetriNetUnfolder]: For 376/393 co-relation queries the response was YES. [2022-12-11 20:18:07,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 749 events. 70/749 cut-off events. For 376/393 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3692 event pairs, 29 based on Foata normal form. 17/705 useless extension candidates. Maximal degree in co-relation 1144. Up to 113 conditions per place. [2022-12-11 20:18:07,415 INFO L137 encePairwiseOnDemand]: 175/180 looper letters, 24 selfloop transitions, 5 changer transitions 2/175 dead transitions. [2022-12-11 20:18:07,415 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 175 transitions, 559 flow [2022-12-11 20:18:07,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-11 20:18:07,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-11 20:18:07,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 634 transitions. [2022-12-11 20:18:07,417 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8805555555555555 [2022-12-11 20:18:07,417 INFO L175 Difference]: Start difference. First operand has 174 places, 166 transitions, 453 flow. Second operand 4 states and 634 transitions. [2022-12-11 20:18:07,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 175 transitions, 559 flow [2022-12-11 20:18:07,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 175 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-11 20:18:07,421 INFO L231 Difference]: Finished difference. Result has 177 places, 168 transitions, 478 flow [2022-12-11 20:18:07,422 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=177, PETRI_TRANSITIONS=168} [2022-12-11 20:18:07,422 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 16 predicate places. [2022-12-11 20:18:07,422 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 168 transitions, 478 flow [2022-12-11 20:18:07,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 154.75) internal successors, (619), 4 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:07,423 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:07,423 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:07,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-11 20:18:07,423 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:07,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1915754460, now seen corresponding path program 3 times [2022-12-11 20:18:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:07,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305264719] [2022-12-11 20:18:07,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:07,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:07,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:07,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305264719] [2022-12-11 20:18:07,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305264719] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:18:07,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322416785] [2022-12-11 20:18:07,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:18:07,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:07,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:18:07,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:18:07,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-11 20:18:08,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-11 20:18:08,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:18:08,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-11 20:18:08,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:18:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:08,220 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:18:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:08,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322416785] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:18:08,315 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:18:08,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 17 [2022-12-11 20:18:08,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420176708] [2022-12-11 20:18:08,315 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:18:08,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-11 20:18:08,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:08,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-11 20:18:08,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2022-12-11 20:18:08,318 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 180 [2022-12-11 20:18:08,320 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 168 transitions, 478 flow. Second operand has 17 states, 17 states have (on average 142.23529411764707) internal successors, (2418), 17 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:08,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:08,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 180 [2022-12-11 20:18:08,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:08,906 INFO L130 PetriNetUnfolder]: 319/1762 cut-off events. [2022-12-11 20:18:08,906 INFO L131 PetriNetUnfolder]: For 1186/1186 co-relation queries the response was YES. [2022-12-11 20:18:08,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3252 conditions, 1762 events. 319/1762 cut-off events. For 1186/1186 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 11545 event pairs, 64 based on Foata normal form. 32/1681 useless extension candidates. Maximal degree in co-relation 3173. Up to 220 conditions per place. [2022-12-11 20:18:08,918 INFO L137 encePairwiseOnDemand]: 161/180 looper letters, 112 selfloop transitions, 44 changer transitions 4/289 dead transitions. [2022-12-11 20:18:08,918 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 289 transitions, 1326 flow [2022-12-11 20:18:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-11 20:18:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-11 20:18:08,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 2937 transitions. [2022-12-11 20:18:08,924 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8158333333333333 [2022-12-11 20:18:08,924 INFO L175 Difference]: Start difference. First operand has 177 places, 168 transitions, 478 flow. Second operand 20 states and 2937 transitions. [2022-12-11 20:18:08,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 289 transitions, 1326 flow [2022-12-11 20:18:08,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 289 transitions, 1308 flow, removed 6 selfloop flow, removed 1 redundant places. [2022-12-11 20:18:08,931 INFO L231 Difference]: Finished difference. Result has 212 places, 203 transitions, 873 flow [2022-12-11 20:18:08,932 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=873, PETRI_PLACES=212, PETRI_TRANSITIONS=203} [2022-12-11 20:18:08,932 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 51 predicate places. [2022-12-11 20:18:08,932 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 203 transitions, 873 flow [2022-12-11 20:18:08,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 142.23529411764707) internal successors, (2418), 17 states have internal predecessors, (2418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:08,934 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:08,934 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:08,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-11 20:18:09,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:09,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash 64366344, now seen corresponding path program 1 times [2022-12-11 20:18:09,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:09,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517027225] [2022-12-11 20:18:09,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:09,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:09,310 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:09,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517027225] [2022-12-11 20:18:09,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517027225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:18:09,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119295403] [2022-12-11 20:18:09,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:09,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:09,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:18:09,312 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:18:09,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-11 20:18:09,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:09,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-11 20:18:09,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:18:10,019 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 20:18:10,022 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:18:10,022 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 10 [2022-12-11 20:18:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:18:10,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:18:10,606 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-11 20:18:10,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2022-12-11 20:18:11,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:18:11,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119295403] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:18:11,175 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:18:11,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 23, 18] total 38 [2022-12-11 20:18:11,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651822031] [2022-12-11 20:18:11,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:18:11,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-12-11 20:18:11,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:11,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-12-11 20:18:11,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1261, Unknown=0, NotChecked=0, Total=1406 [2022-12-11 20:18:11,179 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 180 [2022-12-11 20:18:11,181 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 203 transitions, 873 flow. Second operand has 38 states, 38 states have (on average 70.65789473684211) internal successors, (2685), 38 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:11,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:11,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 180 [2022-12-11 20:18:11,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:18:22,945 INFO L130 PetriNetUnfolder]: 12784/27096 cut-off events. [2022-12-11 20:18:22,945 INFO L131 PetriNetUnfolder]: For 29660/29875 co-relation queries the response was YES. [2022-12-11 20:18:23,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66392 conditions, 27096 events. 12784/27096 cut-off events. For 29660/29875 co-relation queries the response was YES. Maximal size of possible extension queue 443. Compared 242840 event pairs, 580 based on Foata normal form. 520/26143 useless extension candidates. Maximal degree in co-relation 52975. Up to 4330 conditions per place. [2022-12-11 20:18:23,146 INFO L137 encePairwiseOnDemand]: 124/180 looper letters, 816 selfloop transitions, 323 changer transitions 631/1842 dead transitions. [2022-12-11 20:18:23,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 380 places, 1842 transitions, 9770 flow [2022-12-11 20:18:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-12-11 20:18:23,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2022-12-11 20:18:23,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 12551 transitions. [2022-12-11 20:18:23,170 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41016339869281043 [2022-12-11 20:18:23,170 INFO L175 Difference]: Start difference. First operand has 212 places, 203 transitions, 873 flow. Second operand 170 states and 12551 transitions. [2022-12-11 20:18:23,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 380 places, 1842 transitions, 9770 flow [2022-12-11 20:18:23,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 378 places, 1842 transitions, 9483 flow, removed 87 selfloop flow, removed 2 redundant places. [2022-12-11 20:18:23,314 INFO L231 Difference]: Finished difference. Result has 500 places, 487 transitions, 3788 flow [2022-12-11 20:18:23,315 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=203, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=170, PETRI_FLOW=3788, PETRI_PLACES=500, PETRI_TRANSITIONS=487} [2022-12-11 20:18:23,317 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 339 predicate places. [2022-12-11 20:18:23,317 INFO L495 AbstractCegarLoop]: Abstraction has has 500 places, 487 transitions, 3788 flow [2022-12-11 20:18:23,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 70.65789473684211) internal successors, (2685), 38 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:23,318 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:18:23,318 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:18:23,336 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-11 20:18:23,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:23,524 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:18:23,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:18:23,524 INFO L85 PathProgramCache]: Analyzing trace with hash -634162976, now seen corresponding path program 2 times [2022-12-11 20:18:23,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:18:23,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432896745] [2022-12-11 20:18:23,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:18:23,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:18:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:18:23,846 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:18:23,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:18:23,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432896745] [2022-12-11 20:18:23,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432896745] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:18:23,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670716149] [2022-12-11 20:18:23,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-11 20:18:23,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:18:23,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:18:23,868 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:18:23,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-11 20:18:23,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-11 20:18:23,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:18:23,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 20:18:23,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:18:24,211 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 15 treesize of output 11 [2022-12-11 20:18:24,415 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 [2022-12-11 20:18:24,451 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 [2022-12-11 20:18:25,148 INFO L321 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2022-12-11 20:18:25,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 10 [2022-12-11 20:18:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 20:18:25,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:18:26,149 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_182 (Array Int Int))) (or (< ~x1~0 0) (<= c_~size~0 ~x1~0) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_182) c_~f~0.base))) (= (select .cse0 (+ (* ~x1~0 4) c_~f~0.offset)) (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))))) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-11 20:18:26,289 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_182 (Array Int Int)) (v_ArrVal_181 (Array Int Int))) (or (< ~x1~0 0) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_181) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_182) c_~f~0.base))) (= (select .cse0 (+ c_~f~0.offset (* ~x2~0 4))) (select .cse0 (+ (* ~x1~0 4) c_~f~0.offset)))) (<= c_~size~0 ~x1~0) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-11 20:18:26,502 WARN L837 $PredicateComparison]: unable to prove that (forall ((~x1~0 Int) (~x2~0 Int) (v_ArrVal_182 (Array Int Int)) (v_ArrVal_181 (Array Int Int))) (or (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_181) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_182) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|))) (= (select .cse0 (+ (* ~x2~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (select .cse0 (+ (* ~x1~0 4) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)))) (< ~x1~0 0) (<= c_~size~0 ~x1~0) (< ~x2~0 0) (<= c_~size~0 ~x2~0))) is different from false [2022-12-11 20:18:26,868 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:18:26,868 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 55 treesize of output 44 [2022-12-11 20:18:26,879 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-11 20:18:26,880 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 198 treesize of output 173 [2022-12-11 20:18:26,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-11 20:18:26,888 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2022-12-11 20:18:26,896 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-12-11 20:18:26,897 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 142 treesize of output 94 [2022-12-11 20:18:27,078 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-11 20:18:27,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670716149] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:18:27,079 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:18:27,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 29, 26] total 55 [2022-12-11 20:18:27,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887383701] [2022-12-11 20:18:27,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:18:27,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-12-11 20:18:27,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:18:27,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-12-11 20:18:27,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=264, Invalid=2384, Unknown=16, NotChecked=306, Total=2970 [2022-12-11 20:18:27,083 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 180 [2022-12-11 20:18:27,085 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 500 places, 487 transitions, 3788 flow. Second operand has 55 states, 55 states have (on average 58.25454545454546) internal successors, (3204), 55 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:18:27,085 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:18:27,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 180 [2022-12-11 20:18:27,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:19:15,611 INFO L130 PetriNetUnfolder]: 25355/49665 cut-off events. [2022-12-11 20:19:15,612 INFO L131 PetriNetUnfolder]: For 1324228/1324933 co-relation queries the response was YES. [2022-12-11 20:19:16,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 293252 conditions, 49665 events. 25355/49665 cut-off events. For 1324228/1324933 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 471281 event pairs, 2882 based on Foata normal form. 877/49486 useless extension candidates. Maximal degree in co-relation 293089. Up to 8581 conditions per place. [2022-12-11 20:19:16,729 INFO L137 encePairwiseOnDemand]: 123/180 looper letters, 896 selfloop transitions, 113 changer transitions 2039/3113 dead transitions. [2022-12-11 20:19:16,729 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 3113 transitions, 50355 flow [2022-12-11 20:19:16,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 222 states. [2022-12-11 20:19:16,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2022-12-11 20:19:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 14275 transitions. [2022-12-11 20:19:16,751 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3572322322322322 [2022-12-11 20:19:16,751 INFO L175 Difference]: Start difference. First operand has 500 places, 487 transitions, 3788 flow. Second operand 222 states and 14275 transitions. [2022-12-11 20:19:16,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 3113 transitions, 50355 flow [2022-12-11 20:19:19,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 585 places, 3113 transitions, 36813 flow, removed 6742 selfloop flow, removed 59 redundant places. [2022-12-11 20:19:19,267 INFO L231 Difference]: Finished difference. Result has 777 places, 287 transitions, 3520 flow [2022-12-11 20:19:19,267 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=364, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=222, PETRI_FLOW=3520, PETRI_PLACES=777, PETRI_TRANSITIONS=287} [2022-12-11 20:19:19,268 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 616 predicate places. [2022-12-11 20:19:19,268 INFO L495 AbstractCegarLoop]: Abstraction has has 777 places, 287 transitions, 3520 flow [2022-12-11 20:19:19,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 58.25454545454546) internal successors, (3204), 55 states have internal predecessors, (3204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:19:19,269 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:19:19,269 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:19:19,274 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-11 20:19:19,474 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,SelfDestructingSolverStorable9 [2022-12-11 20:19:19,474 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:19:19,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:19:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash -565143260, now seen corresponding path program 3 times [2022-12-11 20:19:19,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:19:19,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741412660] [2022-12-11 20:19:19,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:19:19,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:19:19,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:19:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-11 20:19:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:19:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741412660] [2022-12-11 20:19:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741412660] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:19:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285893151] [2022-12-11 20:19:19,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-11 20:19:19,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:19:19,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:19:19,783 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:19:19,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-11 20:19:19,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-11 20:19:19,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:19:19,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-11 20:19:19,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:19:20,895 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2022-12-11 20:19:20,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 10 [2022-12-11 20:19:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 3 proven. 31 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-11 20:19:20,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:19:22,066 INFO L321 Elim1Store]: treesize reduction 5, result has 95.4 percent of original size [2022-12-11 20:19:22,066 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 66 treesize of output 137 [2022-12-11 20:19:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-11 20:19:23,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285893151] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:19:23,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:19:23,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 24, 27] total 54 [2022-12-11 20:19:23,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175232523] [2022-12-11 20:19:23,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:19:23,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-12-11 20:19:23,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:19:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-12-11 20:19:23,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2662, Unknown=0, NotChecked=0, Total=2862 [2022-12-11 20:19:23,056 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 180 [2022-12-11 20:19:23,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 777 places, 287 transitions, 3520 flow. Second operand has 54 states, 54 states have (on average 69.75925925925925) internal successors, (3767), 54 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:19:23,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:19:23,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 180 [2022-12-11 20:19:23,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:20:35,246 INFO L130 PetriNetUnfolder]: 26920/53268 cut-off events. [2022-12-11 20:20:35,246 INFO L131 PetriNetUnfolder]: For 6930443/6931250 co-relation queries the response was YES. [2022-12-11 20:20:37,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593719 conditions, 53268 events. 26920/53268 cut-off events. For 6930443/6931250 co-relation queries the response was YES. Maximal size of possible extension queue 893. Compared 510480 event pairs, 816 based on Foata normal form. 706/53291 useless extension candidates. Maximal degree in co-relation 593416. Up to 9620 conditions per place. [2022-12-11 20:20:37,803 INFO L137 encePairwiseOnDemand]: 128/180 looper letters, 652 selfloop transitions, 81 changer transitions 3113/3918 dead transitions. [2022-12-11 20:20:37,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1037 places, 3918 transitions, 107327 flow [2022-12-11 20:20:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 483 states. [2022-12-11 20:20:37,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2022-12-11 20:20:37,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 34581 transitions. [2022-12-11 20:20:37,833 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.39775707384403036 [2022-12-11 20:20:37,833 INFO L175 Difference]: Start difference. First operand has 777 places, 287 transitions, 3520 flow. Second operand 483 states and 34581 transitions. [2022-12-11 20:20:37,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1037 places, 3918 transitions, 107327 flow [2022-12-11 20:20:44,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 838 places, 3918 transitions, 52829 flow, removed 27049 selfloop flow, removed 199 redundant places. [2022-12-11 20:20:44,495 INFO L231 Difference]: Finished difference. Result has 1270 places, 249 transitions, 4320 flow [2022-12-11 20:20:44,495 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=2422, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=483, PETRI_FLOW=4320, PETRI_PLACES=1270, PETRI_TRANSITIONS=249} [2022-12-11 20:20:44,496 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 1109 predicate places. [2022-12-11 20:20:44,496 INFO L495 AbstractCegarLoop]: Abstraction has has 1270 places, 249 transitions, 4320 flow [2022-12-11 20:20:44,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 69.75925925925925) internal successors, (3767), 54 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:20:44,498 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:20:44,498 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:20:44,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-11 20:20:44,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:20:44,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:20:44,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:20:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash -802926621, now seen corresponding path program 4 times [2022-12-11 20:20:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:20:44,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420201946] [2022-12-11 20:20:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:20:44,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:20:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:20:52,970 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:20:52,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:20:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420201946] [2022-12-11 20:20:52,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420201946] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:20:52,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1986686532] [2022-12-11 20:20:52,970 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-11 20:20:52,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:20:52,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:20:52,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-11 20:20:52,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-11 20:20:53,085 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-11 20:20:53,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:20:53,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 84 conjunts are in the unsatisfiable core [2022-12-11 20:20:53,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:20:56,544 INFO L321 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2022-12-11 20:20:56,544 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 107 treesize of output 54 [2022-12-11 20:20:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:20:56,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:21:00,499 INFO L321 Elim1Store]: treesize reduction 20, result has 92.8 percent of original size [2022-12-11 20:21:00,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 236 treesize of output 332 [2022-12-11 20:21:07,002 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:21:07,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1986686532] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-11 20:21:07,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-11 20:21:07,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 42, 41] total 129 [2022-12-11 20:21:07,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551840004] [2022-12-11 20:21:07,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-11 20:21:07,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-12-11 20:21:07,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-11 20:21:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-12-11 20:21:07,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1038, Invalid=15474, Unknown=0, NotChecked=0, Total=16512 [2022-12-11 20:21:07,012 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 180 [2022-12-11 20:21:07,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1270 places, 249 transitions, 4320 flow. Second operand has 129 states, 129 states have (on average 59.58914728682171) internal successors, (7687), 129 states have internal predecessors, (7687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:21:07,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-11 20:21:07,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 180 [2022-12-11 20:21:07,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-11 20:22:26,489 INFO L130 PetriNetUnfolder]: 18612/40980 cut-off events. [2022-12-11 20:22:26,489 INFO L131 PetriNetUnfolder]: For 13119047/13119712 co-relation queries the response was YES. [2022-12-11 20:22:29,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 735260 conditions, 40980 events. 18612/40980 cut-off events. For 13119047/13119712 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 392354 event pairs, 3009 based on Foata normal form. 170/41045 useless extension candidates. Maximal degree in co-relation 734674. Up to 8755 conditions per place. [2022-12-11 20:22:29,703 INFO L137 encePairwiseOnDemand]: 122/180 looper letters, 1146 selfloop transitions, 462 changer transitions 264/1997 dead transitions. [2022-12-11 20:22:29,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 968 places, 1997 transitions, 85492 flow [2022-12-11 20:22:29,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-12-11 20:22:29,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2022-12-11 20:22:29,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 12188 transitions. [2022-12-11 20:22:29,741 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.37000607164541593 [2022-12-11 20:22:29,742 INFO L175 Difference]: Start difference. First operand has 1270 places, 249 transitions, 4320 flow. Second operand 183 states and 12188 transitions. [2022-12-11 20:22:29,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 968 places, 1997 transitions, 85492 flow [2022-12-11 20:22:54,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1997 transitions, 32322 flow, removed 26470 selfloop flow, removed 439 redundant places. [2022-12-11 20:22:54,348 INFO L231 Difference]: Finished difference. Result has 642 places, 710 transitions, 13174 flow [2022-12-11 20:22:54,349 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=2346, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=183, PETRI_FLOW=13174, PETRI_PLACES=642, PETRI_TRANSITIONS=710} [2022-12-11 20:22:54,350 INFO L295 CegarLoopForPetriNet]: 161 programPoint places, 481 predicate places. [2022-12-11 20:22:54,350 INFO L495 AbstractCegarLoop]: Abstraction has has 642 places, 710 transitions, 13174 flow [2022-12-11 20:22:54,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 59.58914728682171) internal successors, (7687), 129 states have internal predecessors, (7687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-11 20:22:54,352 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-11 20:22:54,352 INFO L214 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-11 20:22:54,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-11 20:22:54,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:22:54,557 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-11 20:22:54,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-11 20:22:54,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1473668471, now seen corresponding path program 5 times [2022-12-11 20:22:54,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-11 20:22:54,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958984585] [2022-12-11 20:22:54,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-11 20:22:54,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-11 20:22:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-11 20:23:00,385 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:23:00,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-11 20:23:00,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958984585] [2022-12-11 20:23:00,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958984585] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-11 20:23:00,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720209154] [2022-12-11 20:23:00,386 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-11 20:23:00,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-11 20:23:00,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-11 20:23:00,387 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) [2022-12-11 20:23:00,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-11 20:23:00,573 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-12-11 20:23:00,573 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-11 20:23:00,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 97 conjunts are in the unsatisfiable core [2022-12-11 20:23:00,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-11 20:23:01,257 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 15 treesize of output 11 [2022-12-11 20:23:01,709 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 [2022-12-11 20:23:01,792 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 [2022-12-11 20:23:03,960 INFO L321 Elim1Store]: treesize reduction 34, result has 30.6 percent of original size [2022-12-11 20:23:03,960 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 7 new quantified variables, introduced 6 case distinctions, treesize of input 61 treesize of output 48 [2022-12-11 20:23:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-11 20:23:04,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-11 20:23:11,774 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-11 20:23:11,775 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 814 treesize of output 466 [2022-12-11 20:23:12,144 INFO L321 Elim1Store]: treesize reduction 5, result has 98.2 percent of original size [2022-12-11 20:23:12,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 2584 treesize of output 2423 [2022-12-11 20:23:12,693 INFO L321 Elim1Store]: treesize reduction 12, result has 96.3 percent of original size [2022-12-11 20:23:12,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 2644 treesize of output 2488 [2022-12-11 20:23:13,369 INFO L321 Elim1Store]: treesize reduction 12, result has 96.3 percent of original size [2022-12-11 20:23:13,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 14 new quantified variables, introduced 28 case distinctions, treesize of input 2104 treesize of output 1408 Received shutdown request... [2022-12-11 20:31:10,469 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 [2022-12-11 20:31:10,469 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-11 20:31:10,476 WARN L249 SmtUtils]: Removed 2 from assertion stack [2022-12-11 20:31:10,478 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-11 20:31:10,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-11 20:31:10,679 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,SelfDestructingSolverStorable12 [2022-12-11 20:31:10,679 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 191 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. [2022-12-11 20:31:10,681 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-11 20:31:10,681 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-11 20:31:10,681 INFO L445 BasicCegarLoop]: Path program histogram: [5, 3, 3, 1, 1] [2022-12-11 20:31:10,683 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-11 20:31:10,683 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-11 20:31:10,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.12 08:31:10 BasicIcfg [2022-12-11 20:31:10,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-11 20:31:10,685 INFO L158 Benchmark]: Toolchain (without parser) took 787796.37ms. Allocated memory was 198.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 174.5MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. [2022-12-11 20:31:10,685 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory is still 175.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-11 20:31:10,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.16ms. Allocated memory is still 198.2MB. Free memory was 174.2MB in the beginning and 162.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-11 20:31:10,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.27ms. Allocated memory is still 198.2MB. Free memory was 162.5MB in the beginning and 160.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:31:10,686 INFO L158 Benchmark]: Boogie Preprocessor took 20.77ms. Allocated memory is still 198.2MB. Free memory was 160.4MB in the beginning and 158.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-11 20:31:10,686 INFO L158 Benchmark]: RCFGBuilder took 384.79ms. Allocated memory is still 198.2MB. Free memory was 158.8MB in the beginning and 141.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-12-11 20:31:10,686 INFO L158 Benchmark]: TraceAbstraction took 787144.39ms. Allocated memory was 198.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 139.9MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. [2022-12-11 20:31:10,687 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory is still 175.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.16ms. Allocated memory is still 198.2MB. Free memory was 174.2MB in the beginning and 162.5MB in the end (delta: 11.7MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.27ms. Allocated memory is still 198.2MB. Free memory was 162.5MB in the beginning and 160.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.77ms. Allocated memory is still 198.2MB. Free memory was 160.4MB in the beginning and 158.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 384.79ms. Allocated memory is still 198.2MB. Free memory was 158.8MB in the beginning and 141.0MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 787144.39ms. Allocated memory was 198.2MB in the beginning and 6.5GB in the end (delta: 6.3GB). Free memory was 139.9MB in the beginning and 1.7GB in the end (delta: -1.6GB). Peak memory consumption was 5.8GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 191 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. - TimeoutResultAtElement [Line: 88]: 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 191 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. - TimeoutResultAtElement [Line: 89]: 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 191 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 237 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: 787.0s, OverallIterations: 13, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 254.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19941 SdHoareTripleChecker+Valid, 42.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19941 mSDsluCounter, 44574 SdHoareTripleChecker+Invalid, 37.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 4172 IncrementalHoareTripleChecker+Unchecked, 42948 mSDsCounter, 1151 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 75356 IncrementalHoareTripleChecker+Invalid, 80679 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1151 mSolverCounterUnsat, 1626 mSDtfsCounter, 75356 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3291 GetRequests, 1933 SyntacticMatches, 8 SemanticMatches, 1350 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 177164 ImplicationChecksByTransitivity, 96.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13174occurred in iteration=12, InterpolantAutomatonStates: 1115, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 32.9s InterpolantComputationTime, 2557 NumberOfCodeBlocks, 2540 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 3436 ConstructedInterpolants, 233 QuantifiedInterpolants, 48249 SizeOfPredicates, 149 NumberOfNonLiveVariables, 2027 ConjunctsInSsa, 237 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 54/461 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