/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 05:18:46,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 05:18:46,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 05:18:46,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 05:18:46,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 05:18:46,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 05:18:46,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 05:18:46,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 05:18:46,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 05:18:46,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 05:18:46,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 05:18:46,960 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 05:18:46,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 05:18:46,963 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 05:18:46,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 05:18:46,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 05:18:46,965 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 05:18:46,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 05:18:46,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 05:18:46,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 05:18:46,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 05:18:46,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 05:18:46,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 05:18:46,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 05:18:46,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 05:18:46,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 05:18:46,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 05:18:46,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 05:18:46,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 05:18:46,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 05:18:46,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 05:18:46,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 05:18:46,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 05:18:46,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 05:18:46,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 05:18:46,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 05:18:46,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 05:18:46,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 05:18:46,984 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 05:18:46,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 05:18:46,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 05:18:46,988 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 05:18:47,011 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 05:18:47,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 05:18:47,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 05:18:47,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 05:18:47,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 05:18:47,012 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 05:18:47,012 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 05:18:47,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 05:18:47,015 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 05:18:47,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 05:18:47,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 05:18:47,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 05:18:47,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 05:18:47,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 05:18:47,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:18:47,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 05:18:47,017 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-28 05:18:47,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 05:18:47,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 05:18:47,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 05:18:47,184 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 05:18:47,187 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 05:18:47,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-01-28 05:18:48,156 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 05:18:48,283 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 05:18:48,283 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c [2023-01-28 05:18:48,287 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d65f1990/cc91504a332549f6997cbc0907a473d4/FLAGcc8d8ce8f [2023-01-28 05:18:48,296 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d65f1990/cc91504a332549f6997cbc0907a473d4 [2023-01-28 05:18:48,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 05:18:48,298 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 05:18:48,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 05:18:48,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 05:18:48,301 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 05:18:48,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f34bcb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48, skipping insertion in model container [2023-01-28 05:18:48,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 05:18:48,319 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 05:18:48,432 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2023-01-28 05:18:48,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:18:48,447 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 05:18:48,479 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-queue-add-3.wvr.c[3412,3425] [2023-01-28 05:18:48,481 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 05:18:48,485 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:18:48,486 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 05:18:48,495 INFO L208 MainTranslator]: Completed translation [2023-01-28 05:18:48,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48 WrapperNode [2023-01-28 05:18:48,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 05:18:48,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 05:18:48,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 05:18:48,496 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 05:18:48,500 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,541 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 252 [2023-01-28 05:18:48,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 05:18:48,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 05:18:48,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 05:18:48,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 05:18:48,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,559 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,571 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,574 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 05:18:48,575 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 05:18:48,575 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 05:18:48,575 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 05:18:48,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (1/1) ... [2023-01-28 05:18:48,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 05:18:48,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:18:48,606 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 05:18:48,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 05:18:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 05:18:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 05:18:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 05:18:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 05:18:48,654 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 05:18:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 05:18:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 05:18:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 05:18:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 05:18:48,655 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 05:18:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 05:18:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 05:18:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 05:18:48,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-28 05:18:48,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 05:18:48,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 05:18:48,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 05:18:48,657 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 05:18:48,755 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 05:18:48,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 05:18:49,003 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 05:18:49,100 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 05:18:49,100 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-01-28 05:18:49,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:18:49 BoogieIcfgContainer [2023-01-28 05:18:49,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 05:18:49,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 05:18:49,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 05:18:49,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 05:18:49,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 05:18:48" (1/3) ... [2023-01-28 05:18:49,112 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322800ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:18:49, skipping insertion in model container [2023-01-28 05:18:49,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 05:18:48" (2/3) ... [2023-01-28 05:18:49,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@322800ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 05:18:49, skipping insertion in model container [2023-01-28 05:18:49,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 05:18:49" (3/3) ... [2023-01-28 05:18:49,114 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-queue-add-3.wvr.c [2023-01-28 05:18:49,125 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 05:18:49,125 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 05:18:49,125 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 05:18:49,167 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-01-28 05:18:49,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 201 transitions, 426 flow [2023-01-28 05:18:49,247 INFO L130 PetriNetUnfolder]: 18/198 cut-off events. [2023-01-28 05:18:49,247 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:18:49,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 198 events. 18/198 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 116 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-01-28 05:18:49,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 193 places, 201 transitions, 426 flow [2023-01-28 05:18:49,261 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 188 transitions, 394 flow [2023-01-28 05:18:49,264 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 05:18:49,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 188 transitions, 394 flow [2023-01-28 05:18:49,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 188 transitions, 394 flow [2023-01-28 05:18:49,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 188 transitions, 394 flow [2023-01-28 05:18:49,305 INFO L130 PetriNetUnfolder]: 18/188 cut-off events. [2023-01-28 05:18:49,305 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:18:49,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 188 events. 18/188 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 115 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 162. Up to 3 conditions per place. [2023-01-28 05:18:49,307 INFO L119 LiptonReduction]: Number of co-enabled transitions 1456 [2023-01-28 05:18:54,481 INFO L134 LiptonReduction]: Checked pairs total: 2338 [2023-01-28 05:18:54,481 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-01-28 05:18:54,491 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 05:18:54,496 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;@2e13305a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 05:18:54,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-28 05:18:54,502 INFO L130 PetriNetUnfolder]: 6/27 cut-off events. [2023-01-28 05:18:54,502 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-28 05:18:54,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:54,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:54,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:54,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:54,506 INFO L85 PathProgramCache]: Analyzing trace with hash -1992179177, now seen corresponding path program 1 times [2023-01-28 05:18:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:54,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073163221] [2023-01-28 05:18:54,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:54,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:54,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:18:54,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:54,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073163221] [2023-01-28 05:18:54,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073163221] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:18:54,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:18:54,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:18:54,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097856922] [2023-01-28 05:18:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:18:54,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-01-28 05:18:54,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-01-28 05:18:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-01-28 05:18:54,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 399 [2023-01-28 05:18:54,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 74 flow. Second operand has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:54,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:54,685 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 399 [2023-01-28 05:18:54,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:54,760 INFO L130 PetriNetUnfolder]: 324/461 cut-off events. [2023-01-28 05:18:54,760 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2023-01-28 05:18:54,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966 conditions, 461 events. 324/461 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1468 event pairs, 167 based on Foata normal form. 0/299 useless extension candidates. Maximal degree in co-relation 739. Up to 453 conditions per place. [2023-01-28 05:18:54,764 INFO L137 encePairwiseOnDemand]: 398/399 looper letters, 24 selfloop transitions, 0 changer transitions 0/27 dead transitions. [2023-01-28 05:18:54,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 27 transitions, 120 flow [2023-01-28 05:18:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-01-28 05:18:54,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-01-28 05:18:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 377 transitions. [2023-01-28 05:18:54,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724310776942356 [2023-01-28 05:18:54,774 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 377 transitions. [2023-01-28 05:18:54,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 377 transitions. [2023-01-28 05:18:54,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:54,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 377 transitions. [2023-01-28 05:18:54,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 188.5) internal successors, (377), 2 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:54,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:54,790 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 399.0) internal successors, (1197), 3 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:54,791 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 74 flow. Second operand 2 states and 377 transitions. [2023-01-28 05:18:54,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 27 transitions, 120 flow [2023-01-28 05:18:54,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 108 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-01-28 05:18:54,796 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 60 flow [2023-01-28 05:18:54,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=60, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-28 05:18:54,800 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, -5 predicate places. [2023-01-28 05:18:54,801 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 60 flow [2023-01-28 05:18:54,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:54,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:54,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 05:18:54,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:54,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1504763739, now seen corresponding path program 1 times [2023-01-28 05:18:54,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:54,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381596297] [2023-01-28 05:18:54,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:54,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:18:55,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:55,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381596297] [2023-01-28 05:18:55,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381596297] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:18:55,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:18:55,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:18:55,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433514336] [2023-01-28 05:18:55,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:18:55,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:18:55,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:55,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:18:55,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:18:55,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 399 [2023-01-28 05:18:55,090 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,090 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:55,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 399 [2023-01-28 05:18:55,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:55,199 INFO L130 PetriNetUnfolder]: 330/496 cut-off events. [2023-01-28 05:18:55,199 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 05:18:55,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 496 events. 330/496 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1625 event pairs, 168 based on Foata normal form. 30/364 useless extension candidates. Maximal degree in co-relation 998. Up to 449 conditions per place. [2023-01-28 05:18:55,202 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 23 selfloop transitions, 2 changer transitions 21/49 dead transitions. [2023-01-28 05:18:55,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 202 flow [2023-01-28 05:18:55,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 05:18:55,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 05:18:55,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2023-01-28 05:18:55,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4045112781954887 [2023-01-28 05:18:55,205 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2023-01-28 05:18:55,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2023-01-28 05:18:55,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:55,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2023-01-28 05:18:55,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 399.0) internal successors, (2394), 6 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,210 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 399.0) internal successors, (2394), 6 states have internal predecessors, (2394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,210 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 60 flow. Second operand 5 states and 807 transitions. [2023-01-28 05:18:55,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 202 flow [2023-01-28 05:18:55,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 05:18:55,211 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 86 flow [2023-01-28 05:18:55,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-01-28 05:18:55,212 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 2 predicate places. [2023-01-28 05:18:55,212 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 86 flow [2023-01-28 05:18:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:55,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:55,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 05:18:55,213 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:55,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:55,213 INFO L85 PathProgramCache]: Analyzing trace with hash 980333088, now seen corresponding path program 1 times [2023-01-28 05:18:55,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:55,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109082489] [2023-01-28 05:18:55,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:55,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:55,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109082489] [2023-01-28 05:18:55,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109082489] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:18:55,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:18:55,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:18:55,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014243219] [2023-01-28 05:18:55,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:18:55,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:18:55,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:55,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:18:55,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:18:55,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 399 [2023-01-28 05:18:55,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:55,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 399 [2023-01-28 05:18:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:55,491 INFO L130 PetriNetUnfolder]: 368/550 cut-off events. [2023-01-28 05:18:55,491 INFO L131 PetriNetUnfolder]: For 406/406 co-relation queries the response was YES. [2023-01-28 05:18:55,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1577 conditions, 550 events. 368/550 cut-off events. For 406/406 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1953 event pairs, 194 based on Foata normal form. 24/401 useless extension candidates. Maximal degree in co-relation 1570. Up to 450 conditions per place. [2023-01-28 05:18:55,495 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 24 selfloop transitions, 2 changer transitions 12/41 dead transitions. [2023-01-28 05:18:55,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 41 transitions, 206 flow [2023-01-28 05:18:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:18:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:18:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 645 transitions. [2023-01-28 05:18:55,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4041353383458647 [2023-01-28 05:18:55,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 645 transitions. [2023-01-28 05:18:55,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 645 transitions. [2023-01-28 05:18:55,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:55,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 645 transitions. [2023-01-28 05:18:55,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.25) internal successors, (645), 4 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,501 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,502 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 86 flow. Second operand 4 states and 645 transitions. [2023-01-28 05:18:55,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 41 transitions, 206 flow [2023-01-28 05:18:55,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 186 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-28 05:18:55,504 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 94 flow [2023-01-28 05:18:55,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=94, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-01-28 05:18:55,505 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-01-28 05:18:55,507 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 94 flow [2023-01-28 05:18:55,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:55,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:55,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 05:18:55,508 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:55,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:55,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1036368596, now seen corresponding path program 1 times [2023-01-28 05:18:55,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:55,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133064206] [2023-01-28 05:18:55,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:55,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:55,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:18:55,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:55,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133064206] [2023-01-28 05:18:55,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133064206] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:18:55,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:18:55,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 05:18:55,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152449522] [2023-01-28 05:18:55,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:18:55,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 05:18:55,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:55,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 05:18:55,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 05:18:55,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-01-28 05:18:55,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:55,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-01-28 05:18:55,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:55,730 INFO L130 PetriNetUnfolder]: 340/485 cut-off events. [2023-01-28 05:18:55,730 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-01-28 05:18:55,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1366 conditions, 485 events. 340/485 cut-off events. For 138/138 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1440 event pairs, 48 based on Foata normal form. 10/328 useless extension candidates. Maximal degree in co-relation 1358. Up to 390 conditions per place. [2023-01-28 05:18:55,732 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 33 selfloop transitions, 3 changer transitions 0/39 dead transitions. [2023-01-28 05:18:55,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 198 flow [2023-01-28 05:18:55,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 05:18:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 05:18:55,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 552 transitions. [2023-01-28 05:18:55,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46115288220551376 [2023-01-28 05:18:55,736 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 552 transitions. [2023-01-28 05:18:55,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 552 transitions. [2023-01-28 05:18:55,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:55,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 552 transitions. [2023-01-28 05:18:55,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.0) internal successors, (552), 3 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,744 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 399.0) internal successors, (1596), 4 states have internal predecessors, (1596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,744 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 94 flow. Second operand 3 states and 552 transitions. [2023-01-28 05:18:55,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 198 flow [2023-01-28 05:18:55,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 39 transitions, 194 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-28 05:18:55,745 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 115 flow [2023-01-28 05:18:55,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-28 05:18:55,747 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-01-28 05:18:55,747 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 115 flow [2023-01-28 05:18:55,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 179.0) internal successors, (537), 3 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:55,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:55,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:55,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 05:18:55,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:55,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:55,748 INFO L85 PathProgramCache]: Analyzing trace with hash -128823418, now seen corresponding path program 2 times [2023-01-28 05:18:55,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:55,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990042584] [2023-01-28 05:18:55,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:55,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:18:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990042584] [2023-01-28 05:18:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990042584] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:18:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:18:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 05:18:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484374047] [2023-01-28 05:18:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:18:56,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 05:18:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 05:18:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 05:18:56,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 399 [2023-01-28 05:18:56,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:56,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:56,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 399 [2023-01-28 05:18:56,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:56,265 INFO L130 PetriNetUnfolder]: 499/749 cut-off events. [2023-01-28 05:18:56,266 INFO L131 PetriNetUnfolder]: For 344/344 co-relation queries the response was YES. [2023-01-28 05:18:56,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2399 conditions, 749 events. 499/749 cut-off events. For 344/344 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2727 event pairs, 123 based on Foata normal form. 1/529 useless extension candidates. Maximal degree in co-relation 2390. Up to 302 conditions per place. [2023-01-28 05:18:56,270 INFO L137 encePairwiseOnDemand]: 392/399 looper letters, 65 selfloop transitions, 8 changer transitions 2/77 dead transitions. [2023-01-28 05:18:56,270 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 77 transitions, 449 flow [2023-01-28 05:18:56,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:18:56,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:18:56,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1058 transitions. [2023-01-28 05:18:56,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441938178780284 [2023-01-28 05:18:56,272 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1058 transitions. [2023-01-28 05:18:56,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1058 transitions. [2023-01-28 05:18:56,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:56,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1058 transitions. [2023-01-28 05:18:56,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.33333333333334) internal successors, (1058), 6 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:56,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:56,321 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:56,321 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 115 flow. Second operand 6 states and 1058 transitions. [2023-01-28 05:18:56,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 77 transitions, 449 flow [2023-01-28 05:18:56,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 77 transitions, 398 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 05:18:56,326 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 158 flow [2023-01-28 05:18:56,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=158, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-01-28 05:18:56,327 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 10 predicate places. [2023-01-28 05:18:56,328 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 158 flow [2023-01-28 05:18:56,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.66666666666666) internal successors, (1012), 6 states have internal predecessors, (1012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:56,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:56,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:56,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 05:18:56,328 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:56,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:56,329 INFO L85 PathProgramCache]: Analyzing trace with hash -712620679, now seen corresponding path program 1 times [2023-01-28 05:18:56,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:56,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815599498] [2023-01-28 05:18:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:56,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:56,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:56,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:56,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:56,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815599498] [2023-01-28 05:18:56,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815599498] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:18:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345826580] [2023-01-28 05:18:56,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:56,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:18:56,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:18:56,460 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:18:56,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 05:18:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:56,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:18:56,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:18:56,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:56,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:18:56,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:56,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345826580] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:18:56,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:18:56,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 05:18:56,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79026911] [2023-01-28 05:18:56,810 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:18:56,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:18:56,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:56,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:18:56,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:18:56,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 399 [2023-01-28 05:18:56,814 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 158 flow. Second operand has 12 states, 12 states have (on average 152.16666666666666) internal successors, (1826), 12 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:56,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:56,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 399 [2023-01-28 05:18:56,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:57,014 INFO L130 PetriNetUnfolder]: 681/1073 cut-off events. [2023-01-28 05:18:57,014 INFO L131 PetriNetUnfolder]: For 1230/1283 co-relation queries the response was YES. [2023-01-28 05:18:57,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3388 conditions, 1073 events. 681/1073 cut-off events. For 1230/1283 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4573 event pairs, 291 based on Foata normal form. 137/1047 useless extension candidates. Maximal degree in co-relation 3377. Up to 645 conditions per place. [2023-01-28 05:18:57,019 INFO L137 encePairwiseOnDemand]: 393/399 looper letters, 59 selfloop transitions, 5 changer transitions 4/72 dead transitions. [2023-01-28 05:18:57,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 72 transitions, 432 flow [2023-01-28 05:18:57,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:18:57,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:18:57,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 950 transitions. [2023-01-28 05:18:57,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-01-28 05:18:57,022 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 950 transitions. [2023-01-28 05:18:57,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 950 transitions. [2023-01-28 05:18:57,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:57,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 950 transitions. [2023-01-28 05:18:57,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,028 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,028 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 158 flow. Second operand 6 states and 950 transitions. [2023-01-28 05:18:57,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 72 transitions, 432 flow [2023-01-28 05:18:57,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 72 transitions, 425 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-01-28 05:18:57,032 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 206 flow [2023-01-28 05:18:57,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-01-28 05:18:57,035 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 17 predicate places. [2023-01-28 05:18:57,035 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 206 flow [2023-01-28 05:18:57,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 152.16666666666666) internal successors, (1826), 12 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,035 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:57,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:57,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 05:18:57,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-01-28 05:18:57,241 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:57,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:57,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1630668423, now seen corresponding path program 1 times [2023-01-28 05:18:57,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:57,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313192774] [2023-01-28 05:18:57,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:57,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:57,358 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:18:57,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:57,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313192774] [2023-01-28 05:18:57,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313192774] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:18:57,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 05:18:57,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 05:18:57,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665512110] [2023-01-28 05:18:57,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:18:57,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:18:57,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:57,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:18:57,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-28 05:18:57,360 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-01-28 05:18:57,361 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,361 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:57,361 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-01-28 05:18:57,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:57,570 INFO L130 PetriNetUnfolder]: 1125/1814 cut-off events. [2023-01-28 05:18:57,570 INFO L131 PetriNetUnfolder]: For 2644/2698 co-relation queries the response was YES. [2023-01-28 05:18:57,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6235 conditions, 1814 events. 1125/1814 cut-off events. For 2644/2698 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9050 event pairs, 206 based on Foata normal form. 134/1655 useless extension candidates. Maximal degree in co-relation 6220. Up to 793 conditions per place. [2023-01-28 05:18:57,578 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 61 selfloop transitions, 12 changer transitions 0/77 dead transitions. [2023-01-28 05:18:57,578 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 77 transitions, 535 flow [2023-01-28 05:18:57,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:18:57,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:18:57,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 744 transitions. [2023-01-28 05:18:57,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46616541353383456 [2023-01-28 05:18:57,580 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 744 transitions. [2023-01-28 05:18:57,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 744 transitions. [2023-01-28 05:18:57,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:57,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 744 transitions. [2023-01-28 05:18:57,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.0) internal successors, (744), 4 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,583 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,583 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 206 flow. Second operand 4 states and 744 transitions. [2023-01-28 05:18:57,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 77 transitions, 535 flow [2023-01-28 05:18:57,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 511 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-01-28 05:18:57,586 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 300 flow [2023-01-28 05:18:57,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=300, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-01-28 05:18:57,586 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2023-01-28 05:18:57,586 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 300 flow [2023-01-28 05:18:57,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:57,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:57,587 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:57,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 05:18:57,587 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:57,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:57,587 INFO L85 PathProgramCache]: Analyzing trace with hash 883003992, now seen corresponding path program 2 times [2023-01-28 05:18:57,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:57,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808081952] [2023-01-28 05:18:57,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:57,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:58,117 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:58,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808081952] [2023-01-28 05:18:58,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808081952] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:18:58,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1593279282] [2023-01-28 05:18:58,117 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:18:58,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:18:58,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:18:58,119 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:18:58,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 05:18:58,234 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:18:58,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:18:58,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 29 conjunts are in the unsatisfiable core [2023-01-28 05:18:58,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:18:58,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:18:58,343 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:18:58,379 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:18:58,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:18:58,411 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_255 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_255) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-01-28 05:18:58,428 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:18:58,428 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 45 treesize of output 37 [2023-01-28 05:18:58,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-01-28 05:18:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:18:58,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1593279282] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:18:58,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:18:58,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6] total 19 [2023-01-28 05:18:58,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995948177] [2023-01-28 05:18:58,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:18:58,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-28 05:18:58,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:18:58,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-28 05:18:58,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=296, Unknown=1, NotChecked=34, Total=380 [2023-01-28 05:18:58,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 399 [2023-01-28 05:18:58,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 300 flow. Second operand has 20 states, 20 states have (on average 127.8) internal successors, (2556), 20 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:58,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:18:58,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 399 [2023-01-28 05:18:58,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:18:59,048 INFO L130 PetriNetUnfolder]: 1143/1887 cut-off events. [2023-01-28 05:18:59,048 INFO L131 PetriNetUnfolder]: For 2931/2956 co-relation queries the response was YES. [2023-01-28 05:18:59,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7535 conditions, 1887 events. 1143/1887 cut-off events. For 2931/2956 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9079 event pairs, 160 based on Foata normal form. 33/1622 useless extension candidates. Maximal degree in co-relation 7518. Up to 1129 conditions per place. [2023-01-28 05:18:59,059 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 101 selfloop transitions, 23 changer transitions 0/126 dead transitions. [2023-01-28 05:18:59,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 126 transitions, 913 flow [2023-01-28 05:18:59,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 05:18:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 05:18:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1732 transitions. [2023-01-28 05:18:59,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33391170233275497 [2023-01-28 05:18:59,063 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1732 transitions. [2023-01-28 05:18:59,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1732 transitions. [2023-01-28 05:18:59,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:18:59,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1732 transitions. [2023-01-28 05:18:59,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 133.23076923076923) internal successors, (1732), 13 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:59,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:59,071 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:59,071 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 300 flow. Second operand 13 states and 1732 transitions. [2023-01-28 05:18:59,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 126 transitions, 913 flow [2023-01-28 05:18:59,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 126 transitions, 841 flow, removed 30 selfloop flow, removed 2 redundant places. [2023-01-28 05:18:59,076 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 405 flow [2023-01-28 05:18:59,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=405, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2023-01-28 05:18:59,076 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2023-01-28 05:18:59,076 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 405 flow [2023-01-28 05:18:59,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 127.8) internal successors, (2556), 20 states have internal predecessors, (2556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:18:59,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:18:59,077 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:18:59,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 05:18:59,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-01-28 05:18:59,283 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:18:59,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:18:59,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1891154340, now seen corresponding path program 3 times [2023-01-28 05:18:59,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:18:59,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866643394] [2023-01-28 05:18:59,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:18:59,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:18:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:18:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:18:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:18:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866643394] [2023-01-28 05:18:59,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866643394] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:18:59,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956712423] [2023-01-28 05:18:59,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:18:59,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:18:59,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:18:59,915 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:18:59,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 05:19:00,074 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:19:00,074 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:19:00,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 05:19:00,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:00,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:19:00,268 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:19:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:00,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:19:00,346 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_312 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_312) c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)) 0))) is different from false [2023-01-28 05:19:00,391 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:19:00,391 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 45 treesize of output 37 [2023-01-28 05:19:00,394 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-01-28 05:19:00,577 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:00,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956712423] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:19:00,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:19:00,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 26 [2023-01-28 05:19:00,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956089481] [2023-01-28 05:19:00,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:19:00,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-01-28 05:19:00,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:00,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-01-28 05:19:00,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=559, Unknown=1, NotChecked=48, Total=702 [2023-01-28 05:19:00,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 399 [2023-01-28 05:19:00,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 405 flow. Second operand has 27 states, 27 states have (on average 116.44444444444444) internal successors, (3144), 27 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:00,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:00,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 399 [2023-01-28 05:19:00,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:04,144 INFO L130 PetriNetUnfolder]: 6091/9385 cut-off events. [2023-01-28 05:19:04,144 INFO L131 PetriNetUnfolder]: For 24426/24426 co-relation queries the response was YES. [2023-01-28 05:19:04,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39017 conditions, 9385 events. 6091/9385 cut-off events. For 24426/24426 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 55771 event pairs, 238 based on Foata normal form. 646/8952 useless extension candidates. Maximal degree in co-relation 38996. Up to 3372 conditions per place. [2023-01-28 05:19:04,202 INFO L137 encePairwiseOnDemand]: 379/399 looper letters, 423 selfloop transitions, 220 changer transitions 0/644 dead transitions. [2023-01-28 05:19:04,202 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 644 transitions, 5474 flow [2023-01-28 05:19:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-01-28 05:19:04,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-01-28 05:19:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 5797 transitions. [2023-01-28 05:19:04,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3091238735135712 [2023-01-28 05:19:04,214 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 5797 transitions. [2023-01-28 05:19:04,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 5797 transitions. [2023-01-28 05:19:04,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:04,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 5797 transitions. [2023-01-28 05:19:04,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 123.34042553191489) internal successors, (5797), 47 states have internal predecessors, (5797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:04,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 399.0) internal successors, (19152), 48 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:04,326 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 399.0) internal successors, (19152), 48 states have internal predecessors, (19152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:04,326 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 405 flow. Second operand 47 states and 5797 transitions. [2023-01-28 05:19:04,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 644 transitions, 5474 flow [2023-01-28 05:19:04,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 644 transitions, 5319 flow, removed 75 selfloop flow, removed 2 redundant places. [2023-01-28 05:19:04,367 INFO L231 Difference]: Finished difference. Result has 147 places, 300 transitions, 3299 flow [2023-01-28 05:19:04,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=3299, PETRI_PLACES=147, PETRI_TRANSITIONS=300} [2023-01-28 05:19:04,368 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 115 predicate places. [2023-01-28 05:19:04,368 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 300 transitions, 3299 flow [2023-01-28 05:19:04,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 116.44444444444444) internal successors, (3144), 27 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:04,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:19:04,369 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:19:04,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 05:19:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:04,575 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:19:04,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:19:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1608264000, now seen corresponding path program 4 times [2023-01-28 05:19:04,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:19:04,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199671411] [2023-01-28 05:19:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:19:04,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:05,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:05,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:19:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199671411] [2023-01-28 05:19:05,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199671411] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:19:05,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293720193] [2023-01-28 05:19:05,231 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 05:19:05,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:05,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:19:05,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:19:05,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 05:19:05,331 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 05:19:05,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:19:05,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 28 conjunts are in the unsatisfiable core [2023-01-28 05:19:05,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:05,509 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:19:05,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:19:05,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:19:05,579 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:19:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:05,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:19:05,897 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:19:05,897 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 85 treesize of output 77 [2023-01-28 05:19:05,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 52 [2023-01-28 05:19:05,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 46 [2023-01-28 05:19:06,099 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:06,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293720193] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:19:06,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:19:06,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2023-01-28 05:19:06,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123119974] [2023-01-28 05:19:06,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:19:06,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 05:19:06,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:06,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 05:19:06,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=690, Unknown=1, NotChecked=0, Total=812 [2023-01-28 05:19:06,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 399 [2023-01-28 05:19:06,105 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 300 transitions, 3299 flow. Second operand has 29 states, 29 states have (on average 113.10344827586206) internal successors, (3280), 29 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:06,105 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:06,105 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 399 [2023-01-28 05:19:06,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:11,431 INFO L130 PetriNetUnfolder]: 11558/17902 cut-off events. [2023-01-28 05:19:11,431 INFO L131 PetriNetUnfolder]: For 348534/348534 co-relation queries the response was YES. [2023-01-28 05:19:11,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129316 conditions, 17902 events. 11558/17902 cut-off events. For 348534/348534 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 120205 event pairs, 741 based on Foata normal form. 144/17042 useless extension candidates. Maximal degree in co-relation 129260. Up to 7830 conditions per place. [2023-01-28 05:19:11,595 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 756 selfloop transitions, 411 changer transitions 5/1173 dead transitions. [2023-01-28 05:19:11,595 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 1173 transitions, 15347 flow [2023-01-28 05:19:11,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-28 05:19:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-28 05:19:11,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 5042 transitions. [2023-01-28 05:19:11,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30087122568325575 [2023-01-28 05:19:11,604 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 5042 transitions. [2023-01-28 05:19:11,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 5042 transitions. [2023-01-28 05:19:11,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:11,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 5042 transitions. [2023-01-28 05:19:11,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 120.04761904761905) internal successors, (5042), 42 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:11,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 399.0) internal successors, (17157), 43 states have internal predecessors, (17157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:11,629 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 399.0) internal successors, (17157), 43 states have internal predecessors, (17157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:11,629 INFO L175 Difference]: Start difference. First operand has 147 places, 300 transitions, 3299 flow. Second operand 42 states and 5042 transitions. [2023-01-28 05:19:11,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 1173 transitions, 15347 flow [2023-01-28 05:19:13,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 1173 transitions, 13713 flow, removed 806 selfloop flow, removed 8 redundant places. [2023-01-28 05:19:13,128 INFO L231 Difference]: Finished difference. Result has 202 places, 612 transitions, 7345 flow [2023-01-28 05:19:13,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=2791, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=7345, PETRI_PLACES=202, PETRI_TRANSITIONS=612} [2023-01-28 05:19:13,129 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 170 predicate places. [2023-01-28 05:19:13,129 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 612 transitions, 7345 flow [2023-01-28 05:19:13,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 113.10344827586206) internal successors, (3280), 29 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:13,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:19:13,130 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-28 05:19:13,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 05:19:13,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:13,336 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:19:13,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:19:13,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1330831581, now seen corresponding path program 5 times [2023-01-28 05:19:13,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:19:13,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736321922] [2023-01-28 05:19:13,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:13,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:19:13,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:14,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:14,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:19:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736321922] [2023-01-28 05:19:14,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736321922] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:19:14,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515404254] [2023-01-28 05:19:14,100 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 05:19:14,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:14,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:19:14,101 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:19:14,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 05:19:14,200 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 05:19:14,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:19:14,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 21 conjunts are in the unsatisfiable core [2023-01-28 05:19:14,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:14,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:19:14,299 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:19:14,329 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:19:14,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:19:14,379 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:19:14,380 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 45 treesize of output 37 [2023-01-28 05:19:14,382 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-01-28 05:19:14,438 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:19:14,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515404254] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:19:14,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:19:14,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 6] total 21 [2023-01-28 05:19:14,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472968178] [2023-01-28 05:19:14,439 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:19:14,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 05:19:14,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:14,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 05:19:14,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=399, Unknown=1, NotChecked=0, Total=462 [2023-01-28 05:19:14,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 399 [2023-01-28 05:19:14,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 612 transitions, 7345 flow. Second operand has 22 states, 22 states have (on average 127.45454545454545) internal successors, (2804), 22 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:14,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:14,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 399 [2023-01-28 05:19:14,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:18,346 INFO L130 PetriNetUnfolder]: 11874/18445 cut-off events. [2023-01-28 05:19:18,347 INFO L131 PetriNetUnfolder]: For 401522/401535 co-relation queries the response was YES. [2023-01-28 05:19:18,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142148 conditions, 18445 events. 11874/18445 cut-off events. For 401522/401535 co-relation queries the response was YES. Maximal size of possible extension queue 932. Compared 124334 event pairs, 1944 based on Foata normal form. 17/17693 useless extension candidates. Maximal degree in co-relation 142074. Up to 9803 conditions per place. [2023-01-28 05:19:18,545 INFO L137 encePairwiseOnDemand]: 390/399 looper letters, 497 selfloop transitions, 311 changer transitions 0/812 dead transitions. [2023-01-28 05:19:18,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 812 transitions, 10844 flow [2023-01-28 05:19:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 05:19:18,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 05:19:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1720 transitions. [2023-01-28 05:19:18,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3315982263350684 [2023-01-28 05:19:18,548 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1720 transitions. [2023-01-28 05:19:18,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1720 transitions. [2023-01-28 05:19:18,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:18,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1720 transitions. [2023-01-28 05:19:18,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 132.30769230769232) internal successors, (1720), 13 states have internal predecessors, (1720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:18,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:18,556 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:18,556 INFO L175 Difference]: Start difference. First operand has 202 places, 612 transitions, 7345 flow. Second operand 13 states and 1720 transitions. [2023-01-28 05:19:18,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 812 transitions, 10844 flow [2023-01-28 05:19:21,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 812 transitions, 10673 flow, removed 62 selfloop flow, removed 13 redundant places. [2023-01-28 05:19:21,561 INFO L231 Difference]: Finished difference. Result has 204 places, 643 transitions, 8598 flow [2023-01-28 05:19:21,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=7194, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=280, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8598, PETRI_PLACES=204, PETRI_TRANSITIONS=643} [2023-01-28 05:19:21,562 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 172 predicate places. [2023-01-28 05:19:21,562 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 643 transitions, 8598 flow [2023-01-28 05:19:21,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 127.45454545454545) internal successors, (2804), 22 states have internal predecessors, (2804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:21,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:19:21,589 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:19:21,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 05:19:21,790 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,SelfDestructingSolverStorable10 [2023-01-28 05:19:21,790 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:19:21,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:19:21,791 INFO L85 PathProgramCache]: Analyzing trace with hash 858752648, now seen corresponding path program 1 times [2023-01-28 05:19:21,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:19:21,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131528214] [2023-01-28 05:19:21,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:21,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:19:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:19:21,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:19:21,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131528214] [2023-01-28 05:19:21,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131528214] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:19:21,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208202341] [2023-01-28 05:19:21,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:21,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:21,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:19:21,897 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:19:21,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 05:19:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:21,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:19:21,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:22,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:19:22,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:19:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 05:19:22,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208202341] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:19:22,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:19:22,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 05:19:22,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143966376] [2023-01-28 05:19:22,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:19:22,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 05:19:22,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 05:19:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-01-28 05:19:22,094 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 399 [2023-01-28 05:19:22,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 643 transitions, 8598 flow. Second operand has 12 states, 12 states have (on average 152.16666666666666) internal successors, (1826), 12 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:22,095 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:22,095 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 399 [2023-01-28 05:19:22,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:27,073 INFO L130 PetriNetUnfolder]: 15656/24952 cut-off events. [2023-01-28 05:19:27,074 INFO L131 PetriNetUnfolder]: For 619640/619672 co-relation queries the response was YES. [2023-01-28 05:19:27,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192292 conditions, 24952 events. 15656/24952 cut-off events. For 619640/619672 co-relation queries the response was YES. Maximal size of possible extension queue 1124. Compared 182089 event pairs, 5139 based on Foata normal form. 820/24737 useless extension candidates. Maximal degree in co-relation 192215. Up to 17920 conditions per place. [2023-01-28 05:19:27,390 INFO L137 encePairwiseOnDemand]: 394/399 looper letters, 672 selfloop transitions, 12 changer transitions 421/1111 dead transitions. [2023-01-28 05:19:27,390 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 1111 transitions, 16440 flow [2023-01-28 05:19:27,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 05:19:27,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 05:19:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 950 transitions. [2023-01-28 05:19:27,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3968253968253968 [2023-01-28 05:19:27,392 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 950 transitions. [2023-01-28 05:19:27,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 950 transitions. [2023-01-28 05:19:27,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:27,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 950 transitions. [2023-01-28 05:19:27,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.33333333333334) internal successors, (950), 6 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:27,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:27,395 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 399.0) internal successors, (2793), 7 states have internal predecessors, (2793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:27,395 INFO L175 Difference]: Start difference. First operand has 204 places, 643 transitions, 8598 flow. Second operand 6 states and 950 transitions. [2023-01-28 05:19:27,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 1111 transitions, 16440 flow [2023-01-28 05:19:32,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1111 transitions, 16413 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-01-28 05:19:32,298 INFO L231 Difference]: Finished difference. Result has 208 places, 645 transitions, 8821 flow [2023-01-28 05:19:32,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8577, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=643, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8821, PETRI_PLACES=208, PETRI_TRANSITIONS=645} [2023-01-28 05:19:32,299 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 176 predicate places. [2023-01-28 05:19:32,299 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 645 transitions, 8821 flow [2023-01-28 05:19:32,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 152.16666666666666) internal successors, (1826), 12 states have internal predecessors, (1826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:32,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:19:32,300 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-28 05:19:32,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 05:19:32,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:32,505 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:19:32,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:19:32,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1483262711, now seen corresponding path program 6 times [2023-01-28 05:19:32,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:19:32,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999619768] [2023-01-28 05:19:32,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:32,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:19:32,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:33,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:19:33,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:19:33,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999619768] [2023-01-28 05:19:33,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999619768] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:19:33,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701376024] [2023-01-28 05:19:33,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 05:19:33,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:33,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:19:33,489 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:19:33,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 05:19:33,630 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 05:19:33,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:19:33,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 05:19:33,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:33,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:19:33,773 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:19:33,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:19:33,802 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2023-01-28 05:19:33,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:19:33,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:19:33,943 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:19:33,944 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 167 treesize of output 151 [2023-01-28 05:19:33,952 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2023-01-28 05:19:33,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 46 [2023-01-28 05:19:34,052 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-01-28 05:19:34,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701376024] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:19:34,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:19:34,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 7] total 22 [2023-01-28 05:19:34,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317466864] [2023-01-28 05:19:34,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:19:34,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-01-28 05:19:34,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:34,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-01-28 05:19:34,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=431, Unknown=10, NotChecked=0, Total=506 [2023-01-28 05:19:34,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 399 [2023-01-28 05:19:34,059 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 645 transitions, 8821 flow. Second operand has 23 states, 23 states have (on average 124.56521739130434) internal successors, (2865), 23 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:34,059 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:34,059 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 399 [2023-01-28 05:19:34,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:38,815 INFO L130 PetriNetUnfolder]: 13470/21523 cut-off events. [2023-01-28 05:19:38,815 INFO L131 PetriNetUnfolder]: For 487546/487572 co-relation queries the response was YES. [2023-01-28 05:19:38,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167351 conditions, 21523 events. 13470/21523 cut-off events. For 487546/487572 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 152404 event pairs, 2061 based on Foata normal form. 34/20688 useless extension candidates. Maximal degree in co-relation 167270. Up to 9371 conditions per place. [2023-01-28 05:19:39,086 INFO L137 encePairwiseOnDemand]: 391/399 looper letters, 521 selfloop transitions, 317 changer transitions 4/846 dead transitions. [2023-01-28 05:19:39,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 846 transitions, 12327 flow [2023-01-28 05:19:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 05:19:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 05:19:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1681 transitions. [2023-01-28 05:19:39,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3240794293425872 [2023-01-28 05:19:39,088 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1681 transitions. [2023-01-28 05:19:39,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1681 transitions. [2023-01-28 05:19:39,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:39,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1681 transitions. [2023-01-28 05:19:39,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 129.30769230769232) internal successors, (1681), 13 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:39,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:39,093 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 399.0) internal successors, (5586), 14 states have internal predecessors, (5586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:39,093 INFO L175 Difference]: Start difference. First operand has 208 places, 645 transitions, 8821 flow. Second operand 13 states and 1681 transitions. [2023-01-28 05:19:39,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 846 transitions, 12327 flow [2023-01-28 05:19:44,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 846 transitions, 12176 flow, removed 66 selfloop flow, removed 3 redundant places. [2023-01-28 05:19:44,054 INFO L231 Difference]: Finished difference. Result has 218 places, 655 transitions, 9614 flow [2023-01-28 05:19:44,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=8686, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=305, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=9614, PETRI_PLACES=218, PETRI_TRANSITIONS=655} [2023-01-28 05:19:44,055 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 186 predicate places. [2023-01-28 05:19:44,055 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 655 transitions, 9614 flow [2023-01-28 05:19:44,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 124.56521739130434) internal successors, (2865), 23 states have internal predecessors, (2865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:44,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:19:44,056 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-01-28 05:19:44,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 05:19:44,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:44,261 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:19:44,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:19:44,261 INFO L85 PathProgramCache]: Analyzing trace with hash -590373184, now seen corresponding path program 2 times [2023-01-28 05:19:44,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:19:44,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545112300] [2023-01-28 05:19:44,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:44,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:19:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:19:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:19:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545112300] [2023-01-28 05:19:44,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545112300] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:19:44,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1146599902] [2023-01-28 05:19:44,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:19:44,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:19:44,429 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:19:44,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 05:19:44,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:19:44,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:19:44,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-28 05:19:44,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:44,587 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-01-28 05:19:44,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-28 05:19:44,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1146599902] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 05:19:44,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-28 05:19:44,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2023-01-28 05:19:44,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471191028] [2023-01-28 05:19:44,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 05:19:44,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 05:19:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:44,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 05:19:44,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-01-28 05:19:44,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 399 [2023-01-28 05:19:44,590 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 655 transitions, 9614 flow. Second operand has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:44,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:44,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 399 [2023-01-28 05:19:44,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:19:48,728 INFO L130 PetriNetUnfolder]: 12749/19909 cut-off events. [2023-01-28 05:19:48,728 INFO L131 PetriNetUnfolder]: For 539800/539817 co-relation queries the response was YES. [2023-01-28 05:19:48,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169835 conditions, 19909 events. 12749/19909 cut-off events. For 539800/539817 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 137318 event pairs, 2539 based on Foata normal form. 186/19121 useless extension candidates. Maximal degree in co-relation 169755. Up to 16451 conditions per place. [2023-01-28 05:19:48,978 INFO L137 encePairwiseOnDemand]: 395/399 looper letters, 652 selfloop transitions, 96 changer transitions 17/770 dead transitions. [2023-01-28 05:19:48,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 770 transitions, 13180 flow [2023-01-28 05:19:48,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 05:19:48,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 05:19:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 748 transitions. [2023-01-28 05:19:48,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867167919799496 [2023-01-28 05:19:48,990 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 748 transitions. [2023-01-28 05:19:48,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 748 transitions. [2023-01-28 05:19:48,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:19:48,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 748 transitions. [2023-01-28 05:19:48,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:48,994 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:48,994 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 399.0) internal successors, (1995), 5 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:48,995 INFO L175 Difference]: Start difference. First operand has 218 places, 655 transitions, 9614 flow. Second operand 4 states and 748 transitions. [2023-01-28 05:19:48,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 770 transitions, 13180 flow [2023-01-28 05:19:52,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 770 transitions, 12870 flow, removed 46 selfloop flow, removed 12 redundant places. [2023-01-28 05:19:52,503 INFO L231 Difference]: Finished difference. Result has 209 places, 674 transitions, 10086 flow [2023-01-28 05:19:52,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=9308, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=560, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=10086, PETRI_PLACES=209, PETRI_TRANSITIONS=674} [2023-01-28 05:19:52,504 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 177 predicate places. [2023-01-28 05:19:52,504 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 674 transitions, 10086 flow [2023-01-28 05:19:52,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 178.0) internal successors, (712), 4 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:52,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:19:52,504 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:19:52,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-28 05:19:52,709 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,SelfDestructingSolverStorable13 [2023-01-28 05:19:52,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:19:52,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:19:52,710 INFO L85 PathProgramCache]: Analyzing trace with hash -71767745, now seen corresponding path program 1 times [2023-01-28 05:19:52,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:19:52,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253046377] [2023-01-28 05:19:52,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:52,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:19:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:19:53,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:19:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253046377] [2023-01-28 05:19:53,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253046377] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:19:53,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966027628] [2023-01-28 05:19:53,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:19:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:19:53,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:19:53,785 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:19:53,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 05:19:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:19:53,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 25 conjunts are in the unsatisfiable core [2023-01-28 05:19:53,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:19:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:19:54,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:19:54,129 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-01-28 05:19:54,130 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 24 treesize of output 11 [2023-01-28 05:19:54,301 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:19:54,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966027628] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:19:54,301 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:19:54,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8, 8] total 28 [2023-01-28 05:19:54,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404821447] [2023-01-28 05:19:54,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:19:54,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-01-28 05:19:54,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:19:54,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-01-28 05:19:54,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=665, Unknown=0, NotChecked=0, Total=812 [2023-01-28 05:19:54,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 399 [2023-01-28 05:19:54,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 674 transitions, 10086 flow. Second operand has 29 states, 29 states have (on average 122.44827586206897) internal successors, (3551), 29 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:19:54,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:19:54,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 399 [2023-01-28 05:19:54,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:20:08,356 INFO L130 PetriNetUnfolder]: 40907/62664 cut-off events. [2023-01-28 05:20:08,356 INFO L131 PetriNetUnfolder]: For 1858356/1858383 co-relation queries the response was YES. [2023-01-28 05:20:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554702 conditions, 62664 events. 40907/62664 cut-off events. For 1858356/1858383 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 483971 event pairs, 3562 based on Foata normal form. 2286/62176 useless extension candidates. Maximal degree in co-relation 554624. Up to 26527 conditions per place. [2023-01-28 05:20:09,611 INFO L137 encePairwiseOnDemand]: 385/399 looper letters, 2472 selfloop transitions, 796 changer transitions 13/3284 dead transitions. [2023-01-28 05:20:09,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 3284 transitions, 54266 flow [2023-01-28 05:20:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-01-28 05:20:09,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-01-28 05:20:09,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4364 transitions. [2023-01-28 05:20:09,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32168656936458795 [2023-01-28 05:20:09,616 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4364 transitions. [2023-01-28 05:20:09,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4364 transitions. [2023-01-28 05:20:09,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:20:09,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4364 transitions. [2023-01-28 05:20:09,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 128.35294117647058) internal successors, (4364), 34 states have internal predecessors, (4364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:09,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 399.0) internal successors, (13965), 35 states have internal predecessors, (13965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:09,632 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 399.0) internal successors, (13965), 35 states have internal predecessors, (13965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:09,632 INFO L175 Difference]: Start difference. First operand has 209 places, 674 transitions, 10086 flow. Second operand 34 states and 4364 transitions. [2023-01-28 05:20:09,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 3284 transitions, 54266 flow [2023-01-28 05:20:29,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 3284 transitions, 53604 flow, removed 331 selfloop flow, removed 4 redundant places. [2023-01-28 05:20:30,013 INFO L231 Difference]: Finished difference. Result has 243 places, 1546 transitions, 29786 flow [2023-01-28 05:20:30,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=10002, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=29786, PETRI_PLACES=243, PETRI_TRANSITIONS=1546} [2023-01-28 05:20:30,014 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 211 predicate places. [2023-01-28 05:20:30,014 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 1546 transitions, 29786 flow [2023-01-28 05:20:30,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 122.44827586206897) internal successors, (3551), 29 states have internal predecessors, (3551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:30,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:20:30,015 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:20:30,022 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 05:20:30,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 05:20:30,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:20:30,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:20:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -128692115, now seen corresponding path program 2 times [2023-01-28 05:20:30,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:20:30,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665611003] [2023-01-28 05:20:30,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:20:30,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:20:30,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:20:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:20:31,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:20:31,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665611003] [2023-01-28 05:20:31,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665611003] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:20:31,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721765429] [2023-01-28 05:20:31,524 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:20:31,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:20:31,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:20:31,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:20:31,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 05:20:31,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:20:31,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:20:31,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 33 conjunts are in the unsatisfiable core [2023-01-28 05:20:31,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:20:31,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:20:31,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-01-28 05:20:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:20:31,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:20:32,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:20:32,032 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 44 treesize of output 36 [2023-01-28 05:20:32,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-01-28 05:20:32,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-01-28 05:20:32,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721765429] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:20:32,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:20:32,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 9] total 30 [2023-01-28 05:20:32,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595310107] [2023-01-28 05:20:32,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:20:32,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-01-28 05:20:32,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:20:32,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-01-28 05:20:32,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2023-01-28 05:20:32,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 399 [2023-01-28 05:20:32,284 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 1546 transitions, 29786 flow. Second operand has 31 states, 31 states have (on average 104.38709677419355) internal successors, (3236), 31 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:32,284 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:20:32,284 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 399 [2023-01-28 05:20:32,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:20:57,230 INFO L130 PetriNetUnfolder]: 51705/78724 cut-off events. [2023-01-28 05:20:57,230 INFO L131 PetriNetUnfolder]: For 2507024/2507024 co-relation queries the response was YES. [2023-01-28 05:20:58,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 706888 conditions, 78724 events. 51705/78724 cut-off events. For 2507024/2507024 co-relation queries the response was YES. Maximal size of possible extension queue 3318. Compared 616488 event pairs, 4091 based on Foata normal form. 3924/79143 useless extension candidates. Maximal degree in co-relation 706802. Up to 33706 conditions per place. [2023-01-28 05:20:59,177 INFO L137 encePairwiseOnDemand]: 384/399 looper letters, 2537 selfloop transitions, 1124 changer transitions 235/3897 dead transitions. [2023-01-28 05:20:59,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 3897 transitions, 71975 flow [2023-01-28 05:20:59,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 05:20:59,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 05:20:59,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3510 transitions. [2023-01-28 05:20:59,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.274906015037594 [2023-01-28 05:20:59,180 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3510 transitions. [2023-01-28 05:20:59,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3510 transitions. [2023-01-28 05:20:59,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:20:59,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3510 transitions. [2023-01-28 05:20:59,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 109.6875) internal successors, (3510), 32 states have internal predecessors, (3510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:59,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 399.0) internal successors, (13167), 33 states have internal predecessors, (13167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:59,199 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 399.0) internal successors, (13167), 33 states have internal predecessors, (13167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:20:59,199 INFO L175 Difference]: Start difference. First operand has 243 places, 1546 transitions, 29786 flow. Second operand 32 states and 3510 transitions. [2023-01-28 05:20:59,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 3897 transitions, 71975 flow [2023-01-28 05:21:58,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 3897 transitions, 68582 flow, removed 945 selfloop flow, removed 10 redundant places. [2023-01-28 05:21:58,170 INFO L231 Difference]: Finished difference. Result has 270 places, 1927 transitions, 39087 flow [2023-01-28 05:21:58,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=24876, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=624, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=654, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=39087, PETRI_PLACES=270, PETRI_TRANSITIONS=1927} [2023-01-28 05:21:58,171 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 238 predicate places. [2023-01-28 05:21:58,171 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 1927 transitions, 39087 flow [2023-01-28 05:21:58,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 104.38709677419355) internal successors, (3236), 31 states have internal predecessors, (3236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:21:58,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:21:58,172 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 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] [2023-01-28 05:21:58,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 05:21:58,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 05:21:58,377 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:21:58,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:21:58,377 INFO L85 PathProgramCache]: Analyzing trace with hash 636017453, now seen corresponding path program 3 times [2023-01-28 05:21:58,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:21:58,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761324091] [2023-01-28 05:21:58,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:21:58,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:21:58,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:21:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:21:59,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:21:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761324091] [2023-01-28 05:21:59,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761324091] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:21:59,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865207921] [2023-01-28 05:21:59,678 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 05:21:59,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:21:59,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:21:59,683 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:21:59,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 05:21:59,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 05:21:59,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:21:59,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 17 conjunts are in the unsatisfiable core [2023-01-28 05:21:59,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:21:59,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-28 05:21:59,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2023-01-28 05:22:00,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-01-28 05:22:00,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:22:00,035 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_787 (Array Int Int))) (not (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_787) c_~q2~0.base) (+ c_~q2~0.offset (* c_~q2_front~0 4))) 0))) is different from false [2023-01-28 05:22:00,046 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:22:00,046 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 44 treesize of output 36 [2023-01-28 05:22:00,048 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-01-28 05:22:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 2 not checked. [2023-01-28 05:22:00,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865207921] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:22:00,152 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:22:00,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 6, 6] total 25 [2023-01-28 05:22:00,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739914884] [2023-01-28 05:22:00,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:22:00,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-01-28 05:22:00,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:22:00,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-01-28 05:22:00,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=529, Unknown=1, NotChecked=46, Total=650 [2023-01-28 05:22:00,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 399 [2023-01-28 05:22:00,156 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 1927 transitions, 39087 flow. Second operand has 26 states, 26 states have (on average 115.57692307692308) internal successors, (3005), 26 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:22:00,156 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:22:00,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 399 [2023-01-28 05:22:00,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:22:27,882 INFO L130 PetriNetUnfolder]: 48112/72830 cut-off events. [2023-01-28 05:22:27,882 INFO L131 PetriNetUnfolder]: For 2215135/2215187 co-relation queries the response was YES. [2023-01-28 05:22:29,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 682286 conditions, 72830 events. 48112/72830 cut-off events. For 2215135/2215187 co-relation queries the response was YES. Maximal size of possible extension queue 3021. Compared 559607 event pairs, 5570 based on Foata normal form. 1494/71120 useless extension candidates. Maximal degree in co-relation 682192. Up to 35977 conditions per place. [2023-01-28 05:22:29,933 INFO L137 encePairwiseOnDemand]: 386/399 looper letters, 1711 selfloop transitions, 696 changer transitions 1/2412 dead transitions. [2023-01-28 05:22:29,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 2412 transitions, 52260 flow [2023-01-28 05:22:29,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-01-28 05:22:29,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-01-28 05:22:29,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2035 transitions. [2023-01-28 05:22:29,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3000147427392009 [2023-01-28 05:22:29,950 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2035 transitions. [2023-01-28 05:22:29,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2035 transitions. [2023-01-28 05:22:29,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:22:29,950 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2035 transitions. [2023-01-28 05:22:29,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 119.70588235294117) internal successors, (2035), 17 states have internal predecessors, (2035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:22:29,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:22:29,972 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 399.0) internal successors, (7182), 18 states have internal predecessors, (7182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:22:29,972 INFO L175 Difference]: Start difference. First operand has 270 places, 1927 transitions, 39087 flow. Second operand 17 states and 2035 transitions. [2023-01-28 05:22:29,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 2412 transitions, 52260 flow [2023-01-28 05:23:38,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 2412 transitions, 51199 flow, removed 430 selfloop flow, removed 16 redundant places. [2023-01-28 05:23:38,829 INFO L231 Difference]: Finished difference. Result has 274 places, 1988 transitions, 41091 flow [2023-01-28 05:23:38,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=38012, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1924, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=633, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=41091, PETRI_PLACES=274, PETRI_TRANSITIONS=1988} [2023-01-28 05:23:38,836 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 242 predicate places. [2023-01-28 05:23:38,836 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 1988 transitions, 41091 flow [2023-01-28 05:23:38,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 115.57692307692308) internal successors, (3005), 26 states have internal predecessors, (3005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:38,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:23:38,836 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:23:38,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-01-28 05:23:39,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-01-28 05:23:39,042 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:23:39,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:23:39,042 INFO L85 PathProgramCache]: Analyzing trace with hash 554783110, now seen corresponding path program 1 times [2023-01-28 05:23:39,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:23:39,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280170026] [2023-01-28 05:23:39,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:39,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:23:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:23:40,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:23:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280170026] [2023-01-28 05:23:40,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280170026] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:23:40,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626987209] [2023-01-28 05:23:40,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:23:40,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:23:40,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:23:40,283 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:23:40,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 05:23:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:23:40,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 56 conjunts are in the unsatisfiable core [2023-01-28 05:23:40,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:23:40,923 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:23:40,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:23:43,051 WARN L839 $PredicateComparison]: unable to prove that (forall ((~q2~0.base Int) (~q2~0.offset Int)) (let ((.cse1 (select |c_#memory_int| ~q2~0.base))) (let ((.cse0 (select .cse1 (+ ~q2~0.offset (* c_~q2_front~0 4))))) (or (= c_~N~0 (+ c_~t~0 .cse0)) (= .cse0 0) (not (= (select .cse1 (+ ~q2~0.offset (* c_~q2_back~0 4))) (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))))))) is different from false [2023-01-28 05:23:45,234 INFO L321 Elim1Store]: treesize reduction 19, result has 79.6 percent of original size [2023-01-28 05:23:45,234 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 4 new quantified variables, introduced 6 case distinctions, treesize of input 73 treesize of output 98 [2023-01-28 05:23:45,665 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-01-28 05:23:45,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626987209] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:23:45,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:23:45,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 10] total 36 [2023-01-28 05:23:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866949987] [2023-01-28 05:23:45,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:23:45,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-01-28 05:23:45,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:23:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-01-28 05:23:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1210, Unknown=1, NotChecked=70, Total=1406 [2023-01-28 05:23:45,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 399 [2023-01-28 05:23:45,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 1988 transitions, 41091 flow. Second operand has 38 states, 38 states have (on average 111.21052631578948) internal successors, (4226), 38 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:23:45,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:23:45,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 399 [2023-01-28 05:23:45,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:23:57,425 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((~q2~0.base Int) (~q2~0.offset Int)) (let ((.cse2 (select |c_#memory_int| ~q2~0.base))) (let ((.cse1 (select .cse2 (+ ~q2~0.offset (* c_~q2_front~0 4))))) (or (= c_~N~0 (+ c_~t~0 .cse1)) (= .cse1 0) (not (= (select .cse2 (+ ~q2~0.offset (* c_~q2_back~0 4))) (select (select |c_#memory_int| c_~q1~0.base) (+ (* c_~q1_front~0 4) c_~q1~0.offset)))))))))) (and .cse0 (or (<= c_~n1~0 c_~q1_back~0) (< c_~q1_back~0 0) .cse0 (< |c_thread1Thread1of1ForFork0_~i~0#1| c_~N~0)))) is different from false [2023-01-28 05:24:00,325 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:24:04,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:24:08,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:24:21,943 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:24:38,234 INFO L130 PetriNetUnfolder]: 52850/80922 cut-off events. [2023-01-28 05:24:38,234 INFO L131 PetriNetUnfolder]: For 2305509/2305509 co-relation queries the response was YES. [2023-01-28 05:24:39,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 752354 conditions, 80922 events. 52850/80922 cut-off events. For 2305509/2305509 co-relation queries the response was YES. Maximal size of possible extension queue 3388. Compared 644441 event pairs, 7959 based on Foata normal form. 34/77170 useless extension candidates. Maximal degree in co-relation 752257. Up to 71959 conditions per place. [2023-01-28 05:24:40,285 INFO L137 encePairwiseOnDemand]: 378/399 looper letters, 2237 selfloop transitions, 734 changer transitions 59/3031 dead transitions. [2023-01-28 05:24:40,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 3031 transitions, 67242 flow [2023-01-28 05:24:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-01-28 05:24:40,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-01-28 05:24:40,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 5273 transitions. [2023-01-28 05:24:40,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2936786410470621 [2023-01-28 05:24:40,289 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 5273 transitions. [2023-01-28 05:24:40,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 5273 transitions. [2023-01-28 05:24:40,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 05:24:40,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 5273 transitions. [2023-01-28 05:24:40,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 117.17777777777778) internal successors, (5273), 45 states have internal predecessors, (5273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:40,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 399.0) internal successors, (18354), 46 states have internal predecessors, (18354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:40,302 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 399.0) internal successors, (18354), 46 states have internal predecessors, (18354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:24:40,302 INFO L175 Difference]: Start difference. First operand has 274 places, 1988 transitions, 41091 flow. Second operand 45 states and 5273 transitions. [2023-01-28 05:24:40,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 3031 transitions, 67242 flow [2023-01-28 05:25:37,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 3031 transitions, 65544 flow, removed 65 selfloop flow, removed 9 redundant places. [2023-01-28 05:25:37,838 INFO L231 Difference]: Finished difference. Result has 328 places, 2631 transitions, 56339 flow [2023-01-28 05:25:37,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=399, PETRI_DIFFERENCE_MINUEND_FLOW=39826, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1988, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=56339, PETRI_PLACES=328, PETRI_TRANSITIONS=2631} [2023-01-28 05:25:37,839 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 296 predicate places. [2023-01-28 05:25:37,839 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 2631 transitions, 56339 flow [2023-01-28 05:25:37,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 111.21052631578948) internal successors, (4226), 38 states have internal predecessors, (4226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:37,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 05:25:37,840 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 05:25:37,849 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-01-28 05:25:38,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-01-28 05:25:38,045 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-28 05:25:38,045 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 05:25:38,046 INFO L85 PathProgramCache]: Analyzing trace with hash -1435828496, now seen corresponding path program 2 times [2023-01-28 05:25:38,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 05:25:38,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302214517] [2023-01-28 05:25:38,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 05:25:38,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 05:25:38,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 05:25:39,253 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 05:25:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 05:25:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302214517] [2023-01-28 05:25:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302214517] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 05:25:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734838545] [2023-01-28 05:25:39,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 05:25:39,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:25:39,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 05:25:39,255 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 05:25:39,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-01-28 05:25:39,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 05:25:39,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 05:25:39,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 60 conjunts are in the unsatisfiable core [2023-01-28 05:25:39,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 05:25:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 05:25:39,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 05:25:44,283 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 05:25:44,283 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 84 treesize of output 264 [2023-01-28 05:25:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 05:25:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734838545] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 05:25:58,069 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 05:25:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 10] total 36 [2023-01-28 05:25:58,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086931621] [2023-01-28 05:25:58,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 05:25:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-01-28 05:25:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 05:25:58,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-01-28 05:25:58,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1245, Unknown=2, NotChecked=0, Total=1406 [2023-01-28 05:25:58,072 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 399 [2023-01-28 05:25:58,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 2631 transitions, 56339 flow. Second operand has 38 states, 38 states have (on average 111.15789473684211) internal successors, (4224), 38 states have internal predecessors, (4224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 05:25:58,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 05:25:58,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 399 [2023-01-28 05:25:58,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 05:26:19,553 WARN L222 SmtUtils]: Spent 20.63s on a formula simplification. DAG size of input: 148 DAG size of output: 134 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:26:21,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:26:24,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:27:10,908 WARN L222 SmtUtils]: Spent 46.50s on a formula simplification. DAG size of input: 68 DAG size of output: 68 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:27:13,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:27:43,708 WARN L222 SmtUtils]: Spent 30.62s on a formula simplification. DAG size of input: 102 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:27:45,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:27:56,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:27:58,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:28:00,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:28:14,633 WARN L222 SmtUtils]: Spent 14.06s on a formula simplification that was a NOOP. DAG size: 52 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:28:21,463 WARN L222 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 132 DAG size of output: 121 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:28:23,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:28:25,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:28:35,724 WARN L222 SmtUtils]: Spent 10.06s on a formula simplification. DAG size of input: 86 DAG size of output: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:28:37,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:28:44,822 WARN L222 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 94 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:28:46,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:29:17,143 WARN L222 SmtUtils]: Spent 26.17s on a formula simplification. DAG size of input: 59 DAG size of output: 59 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:29:19,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:29:21,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:29:31,827 WARN L222 SmtUtils]: Spent 8.24s on a formula simplification. DAG size of input: 86 DAG size of output: 83 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:29:33,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:29:50,386 WARN L222 SmtUtils]: Spent 8.27s on a formula simplification. DAG size of input: 94 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:29:52,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:29:54,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:01,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:03,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:12,094 WARN L222 SmtUtils]: Spent 8.20s on a formula simplification. DAG size of input: 86 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:30:14,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:22,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:27,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:47,009 WARN L222 SmtUtils]: Spent 16.58s on a formula simplification. DAG size of input: 161 DAG size of output: 143 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:30:53,653 WARN L222 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 133 DAG size of output: 119 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:30:56,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:30:58,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:31:00,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:31:02,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 05:31:24,908 WARN L222 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 57 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-01-28 05:31:45,748 WARN L230 Executor]: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2023-01-28 05:31:45,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2023-01-28 05:31:45,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2023-01-28 05:31:45,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-01-28 05:31:45,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 05:31:45,950 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:620) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:120) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:370) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:649) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.simplify.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:184) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:187) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:160) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:376) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.NestedWordAutomataUtils.getSuccessorState(NestedWordAutomataUtils.java:483) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getOrConstructTransition(DifferencePetriNet.java:279) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getTransitions(DifferencePetriNet.java:261) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.addFullyInstantiatedCandidate(PossibleExtensions.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:195) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.update(PossibleExtensions.java:135) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.computeUnfoldingHelper(PetriNetUnfolder.java:209) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.computeUnfolding(PetriNetUnfolder.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.(PetriNetUnfolder.java:129) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:76) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:64) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePairwiseOnDemand.(DifferencePairwiseOnDemand.java:125) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:481) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 64 more [2023-01-28 05:31:45,953 INFO L158 Benchmark]: Toolchain (without parser) took 777654.47ms. Allocated memory was 541.1MB in the beginning and 10.7GB in the end (delta: 10.2GB). Free memory was 490.7MB in the beginning and 6.1GB in the end (delta: -5.6GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-01-28 05:31:45,953 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 392.2MB. Free memory is still 339.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 05:31:45,953 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.09ms. Allocated memory is still 541.1MB. Free memory was 490.5MB in the beginning and 478.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 05:31:45,953 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.30ms. Allocated memory is still 541.1MB. Free memory was 478.4MB in the beginning and 475.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:31:45,953 INFO L158 Benchmark]: Boogie Preprocessor took 31.34ms. Allocated memory is still 541.1MB. Free memory was 475.8MB in the beginning and 474.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 05:31:45,954 INFO L158 Benchmark]: RCFGBuilder took 527.71ms. Allocated memory is still 541.1MB. Free memory was 474.1MB in the beginning and 439.3MB in the end (delta: 34.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-01-28 05:31:45,954 INFO L158 Benchmark]: TraceAbstraction took 776848.75ms. Allocated memory was 541.1MB in the beginning and 10.7GB in the end (delta: 10.2GB). Free memory was 438.5MB in the beginning and 6.1GB in the end (delta: -5.6GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-01-28 05:31:45,954 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 392.2MB. Free memory is still 339.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 196.09ms. Allocated memory is still 541.1MB. Free memory was 490.5MB in the beginning and 478.4MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 46.30ms. Allocated memory is still 541.1MB. Free memory was 478.4MB in the beginning and 475.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.34ms. Allocated memory is still 541.1MB. Free memory was 475.8MB in the beginning and 474.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 527.71ms. Allocated memory is still 541.1MB. Free memory was 474.1MB in the beginning and 439.3MB in the end (delta: 34.8MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 776848.75ms. Allocated memory was 541.1MB in the beginning and 10.7GB in the end (delta: 10.2GB). Free memory was 438.5MB in the beginning and 6.1GB in the end (delta: -5.6GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 180 PlacesBefore, 32 PlacesAfterwards, 188 TransitionsBefore, 28 TransitionsAfterwards, 1456 CoEnabledTransitionPairs, 8 FixpointIterations, 122 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 25 TrivialYvCompositions, 12 ConcurrentYvCompositions, 12 ChoiceCompositions, 198 TotalNumberOfCompositions, 2338 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1811, independent: 1742, independent conditional: 0, independent unconditional: 1742, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 837, independent: 816, independent conditional: 0, independent unconditional: 816, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1811, independent: 926, independent conditional: 0, independent unconditional: 926, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 837, unknown conditional: 0, unknown unconditional: 837] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 61, Positive conditional cache size: 0, Positive unconditional cache size: 61, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...