/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longest-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 18:29:16,566 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 18:29:16,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 18:29:16,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 18:29:16,618 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 18:29:16,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 18:29:16,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 18:29:16,629 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 18:29:16,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 18:29:16,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 18:29:16,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 18:29:16,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 18:29:16,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 18:29:16,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 18:29:16,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 18:29:16,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 18:29:16,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 18:29:16,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 18:29:16,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 18:29:16,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 18:29:16,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 18:29:16,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 18:29:16,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 18:29:16,646 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 18:29:16,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 18:29:16,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 18:29:16,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 18:29:16,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 18:29:16,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 18:29:16,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 18:29:16,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 18:29:16,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 18:29:16,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 18:29:16,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 18:29:16,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 18:29:16,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 18:29:16,655 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 18:29:16,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 18:29:16,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 18:29:16,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 18:29:16,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 18:29:16,660 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-SemanticLbe.epf [2022-12-12 18:29:16,684 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 18:29:16,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 18:29:16,686 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 18:29:16,687 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 18:29:16,687 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 18:29:16,688 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 18:29:16,688 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 18:29:16,688 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 18:29:16,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 18:29:16,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 18:29:16,689 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 18:29:16,690 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 18:29:16,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 18:29:16,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 18:29:16,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 18:29:16,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 18:29:16,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 18:29:16,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:29:16,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 18:29:16,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 18:29:16,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 18:29:16,692 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 18:29:16,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 18:29:16,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 18:29:16,692 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 18:29:17,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 18:29:17,028 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 18:29:17,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 18:29:17,031 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 18:29:17,031 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 18:29:17,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-12-12 18:29:18,091 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 18:29:18,376 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 18:29:18,376 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i [2022-12-12 18:29:18,389 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9498aa466/29c9be076a4b4d8c873c753e86e4961e/FLAG344d25300 [2022-12-12 18:29:18,407 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9498aa466/29c9be076a4b4d8c873c753e86e4961e [2022-12-12 18:29:18,409 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 18:29:18,411 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 18:29:18,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 18:29:18,412 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 18:29:18,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 18:29:18,414 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e67198c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18, skipping insertion in model container [2022-12-12 18:29:18,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 18:29:18,463 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 18:29:18,802 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,803 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,806 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,807 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,813 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,815 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,816 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,817 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2022-12-12 18:29:18,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:29:18,827 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 18:29:18,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,865 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,866 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,867 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,871 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,873 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 18:29:18,874 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 18:29:18,875 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longest-1.i[30962,30975] [2022-12-12 18:29:18,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 18:29:18,915 INFO L208 MainTranslator]: Completed translation [2022-12-12 18:29:18,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18 WrapperNode [2022-12-12 18:29:18,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 18:29:18,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 18:29:18,917 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 18:29:18,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 18:29:18,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,948 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,964 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2022-12-12 18:29:18,965 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 18:29:18,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 18:29:18,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 18:29:18,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 18:29:18,974 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:18,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:19,000 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:19,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:19,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 18:29:19,004 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 18:29:19,004 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 18:29:19,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 18:29:19,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (1/1) ... [2022-12-12 18:29:19,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 18:29:19,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:19,038 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-12 18:29:19,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-12 18:29:19,073 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-12-12 18:29:19,075 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-12-12 18:29:19,076 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 18:29:19,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 18:29:19,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 18:29:19,078 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 18:29:19,250 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 18:29:19,251 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 18:29:19,352 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 18:29:19,357 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 18:29:19,357 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 18:29:19,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:29:19 BoogieIcfgContainer [2022-12-12 18:29:19,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 18:29:19,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 18:29:19,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 18:29:19,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 18:29:19,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 06:29:18" (1/3) ... [2022-12-12 18:29:19,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a54fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:29:19, skipping insertion in model container [2022-12-12 18:29:19,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 06:29:18" (2/3) ... [2022-12-12 18:29:19,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a54fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 06:29:19, skipping insertion in model container [2022-12-12 18:29:19,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 06:29:19" (3/3) ... [2022-12-12 18:29:19,366 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longest-1.i [2022-12-12 18:29:19,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 18:29:19,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 18:29:19,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 18:29:19,425 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 18:29:19,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2022-12-12 18:29:19,485 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-12 18:29:19,485 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:29:19,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 18:29:19,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2022-12-12 18:29:19,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2022-12-12 18:29:19,494 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 18:29:19,509 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2022-12-12 18:29:19,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2022-12-12 18:29:19,529 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2022-12-12 18:29:19,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:29:19,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2022-12-12 18:29:19,532 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2022-12-12 18:29:19,532 INFO L226 LiptonReduction]: Number of co-enabled transitions 1078 [2022-12-12 18:29:21,954 INFO L241 LiptonReduction]: Total number of compositions: 51 [2022-12-12 18:29:21,967 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 18:29:21,972 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;@6fc1e2fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 18:29:21,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 18:29:21,978 INFO L130 PetriNetUnfolder]: 2/25 cut-off events. [2022-12-12 18:29:21,978 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 18:29:21,978 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:21,979 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 18:29:21,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:21,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:21,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1005742466, now seen corresponding path program 1 times [2022-12-12 18:29:21,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:21,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60209895] [2022-12-12 18:29:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:21,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:22,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:22,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:22,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60209895] [2022-12-12 18:29:22,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60209895] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:22,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:22,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 18:29:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244846264] [2022-12-12 18:29:22,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:22,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 18:29:22,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:22,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 18:29:22,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 18:29:22,355 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:22,356 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:22,356 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:22,357 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:22,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:22,570 INFO L130 PetriNetUnfolder]: 681/1079 cut-off events. [2022-12-12 18:29:22,571 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 18:29:22,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2143 conditions, 1079 events. 681/1079 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5102 event pairs, 66 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 2133. Up to 713 conditions per place. [2022-12-12 18:29:22,583 INFO L137 encePairwiseOnDemand]: 20/27 looper letters, 38 selfloop transitions, 10 changer transitions 8/60 dead transitions. [2022-12-12 18:29:22,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 60 transitions, 238 flow [2022-12-12 18:29:22,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 18:29:22,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 18:29:22,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2022-12-12 18:29:22,595 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6759259259259259 [2022-12-12 18:29:22,600 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2022-12-12 18:29:22,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 35 places, 60 transitions, 238 flow [2022-12-12 18:29:22,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 52 transitions, 206 flow [2022-12-12 18:29:22,608 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 52 transitions, 206 flow [2022-12-12 18:29:22,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:22,608 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:22,608 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 18:29:22,609 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash -152048275, now seen corresponding path program 1 times [2022-12-12 18:29:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:22,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260424048] [2022-12-12 18:29:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:22,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:22,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:22,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:22,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:22,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260424048] [2022-12-12 18:29:22,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260424048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:22,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:22,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:29:22,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060192004] [2022-12-12 18:29:22,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:22,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:29:22,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:22,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:29:22,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:29:22,808 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:22,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 52 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:22,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:22,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:22,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:23,040 INFO L130 PetriNetUnfolder]: 880/1430 cut-off events. [2022-12-12 18:29:23,041 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-12-12 18:29:23,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4207 conditions, 1430 events. 880/1430 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 7050 event pairs, 33 based on Foata normal form. 84/590 useless extension candidates. Maximal degree in co-relation 4194. Up to 1210 conditions per place. [2022-12-12 18:29:23,048 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 97 selfloop transitions, 32 changer transitions 6/139 dead transitions. [2022-12-12 18:29:23,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 139 transitions, 827 flow [2022-12-12 18:29:23,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 18:29:23,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 18:29:23,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2022-12-12 18:29:23,052 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.691358024691358 [2022-12-12 18:29:23,053 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 7 predicate places. [2022-12-12 18:29:23,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 139 transitions, 827 flow [2022-12-12 18:29:23,061 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 133 transitions, 791 flow [2022-12-12 18:29:23,061 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 133 transitions, 791 flow [2022-12-12 18:29:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:23,062 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:23,062 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:23,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 18:29:23,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:23,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:23,064 INFO L85 PathProgramCache]: Analyzing trace with hash -152084545, now seen corresponding path program 2 times [2022-12-12 18:29:23,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:23,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776952413] [2022-12-12 18:29:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:23,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:23,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:23,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776952413] [2022-12-12 18:29:23,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776952413] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:23,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:23,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 18:29:23,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965427466] [2022-12-12 18:29:23,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:23,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 18:29:23,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:23,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 18:29:23,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 18:29:23,206 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:23,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 133 transitions, 791 flow. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:23,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:23,207 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:23,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:23,382 INFO L130 PetriNetUnfolder]: 747/1240 cut-off events. [2022-12-12 18:29:23,383 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2022-12-12 18:29:23,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4824 conditions, 1240 events. 747/1240 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 6336 event pairs, 33 based on Foata normal form. 84/532 useless extension candidates. Maximal degree in co-relation 4808. Up to 1006 conditions per place. [2022-12-12 18:29:23,389 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 89 selfloop transitions, 35 changer transitions 30/158 dead transitions. [2022-12-12 18:29:23,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 158 transitions, 1249 flow [2022-12-12 18:29:23,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 18:29:23,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 18:29:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 93 transitions. [2022-12-12 18:29:23,391 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6888888888888889 [2022-12-12 18:29:23,391 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2022-12-12 18:29:23,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 158 transitions, 1249 flow [2022-12-12 18:29:23,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 128 transitions, 1009 flow [2022-12-12 18:29:23,398 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 128 transitions, 1009 flow [2022-12-12 18:29:23,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:23,398 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:23,398 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:23,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 18:29:23,398 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:23,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:23,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1910355368, now seen corresponding path program 1 times [2022-12-12 18:29:23,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:23,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768157118] [2022-12-12 18:29:23,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:23,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:23,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:23,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768157118] [2022-12-12 18:29:23,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768157118] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:23,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:23,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:29:23,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051273839] [2022-12-12 18:29:23,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:23,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:29:23,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:23,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:29:23,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-12 18:29:23,492 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:23,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 128 transitions, 1009 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:23,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:23,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:23,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:23,743 INFO L130 PetriNetUnfolder]: 993/1705 cut-off events. [2022-12-12 18:29:23,744 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-12-12 18:29:23,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8284 conditions, 1705 events. 993/1705 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 9570 event pairs, 45 based on Foata normal form. 98/681 useless extension candidates. Maximal degree in co-relation 8265. Up to 1551 conditions per place. [2022-12-12 18:29:23,756 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 108 selfloop transitions, 53 changer transitions 21/186 dead transitions. [2022-12-12 18:29:23,756 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 186 transitions, 1837 flow [2022-12-12 18:29:23,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 18:29:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 18:29:23,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 142 transitions. [2022-12-12 18:29:23,759 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6574074074074074 [2022-12-12 18:29:23,761 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 18 predicate places. [2022-12-12 18:29:23,761 INFO L82 GeneralOperation]: Start removeDead. Operand has 50 places, 186 transitions, 1837 flow [2022-12-12 18:29:23,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 50 places, 165 transitions, 1627 flow [2022-12-12 18:29:23,773 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 165 transitions, 1627 flow [2022-12-12 18:29:23,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:23,773 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:23,773 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:23,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 18:29:23,773 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:23,774 INFO L85 PathProgramCache]: Analyzing trace with hash -784611115, now seen corresponding path program 1 times [2022-12-12 18:29:23,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:23,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685631221] [2022-12-12 18:29:23,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:23,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:23,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:23,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:23,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685631221] [2022-12-12 18:29:23,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685631221] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:29:23,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 18:29:23,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 18:29:23,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749527337] [2022-12-12 18:29:23,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:29:23,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 18:29:23,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:23,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 18:29:23,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-12 18:29:23,872 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:23,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 165 transitions, 1627 flow. Second operand has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:23,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:23,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:23,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:24,156 INFO L130 PetriNetUnfolder]: 872/1522 cut-off events. [2022-12-12 18:29:24,157 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-12-12 18:29:24,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8830 conditions, 1522 events. 872/1522 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 8788 event pairs, 24 based on Foata normal form. 98/654 useless extension candidates. Maximal degree in co-relation 8808. Up to 1369 conditions per place. [2022-12-12 18:29:24,166 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 77 selfloop transitions, 55 changer transitions 57/193 dead transitions. [2022-12-12 18:29:24,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 193 transitions, 2285 flow [2022-12-12 18:29:24,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 18:29:24,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 18:29:24,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 132 transitions. [2022-12-12 18:29:24,168 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6111111111111112 [2022-12-12 18:29:24,168 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2022-12-12 18:29:24,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 193 transitions, 2285 flow [2022-12-12 18:29:24,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 136 transitions, 1601 flow [2022-12-12 18:29:24,176 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 136 transitions, 1601 flow [2022-12-12 18:29:24,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:24,176 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:24,176 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 18:29:24,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:24,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash -918934175, now seen corresponding path program 1 times [2022-12-12 18:29:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:24,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848069742] [2022-12-12 18:29:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:24,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:24,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:24,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:24,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848069742] [2022-12-12 18:29:24,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848069742] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:24,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804110396] [2022-12-12 18:29:24,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:24,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:24,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:24,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 18:29:24,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:24,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 18:29:24,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:24,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:24,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:24,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804110396] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:24,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:24,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-12-12 18:29:24,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217998935] [2022-12-12 18:29:24,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:24,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 18:29:24,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:24,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 18:29:24,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-12-12 18:29:24,615 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:24,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 136 transitions, 1601 flow. Second operand has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:24,616 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:24,616 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:24,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:24,967 INFO L130 PetriNetUnfolder]: 743/1327 cut-off events. [2022-12-12 18:29:24,968 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:24,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8838 conditions, 1327 events. 743/1327 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6807 event pairs, 24 based on Foata normal form. 294/712 useless extension candidates. Maximal degree in co-relation 8813. Up to 1209 conditions per place. [2022-12-12 18:29:24,979 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 115 selfloop transitions, 29 changer transitions 72/220 dead transitions. [2022-12-12 18:29:24,979 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 220 transitions, 3041 flow [2022-12-12 18:29:24,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-12 18:29:24,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-12 18:29:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 193 transitions. [2022-12-12 18:29:24,981 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.595679012345679 [2022-12-12 18:29:24,983 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 36 predicate places. [2022-12-12 18:29:24,983 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 220 transitions, 3041 flow [2022-12-12 18:29:24,993 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 148 transitions, 2033 flow [2022-12-12 18:29:24,994 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 148 transitions, 2033 flow [2022-12-12 18:29:24,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.916666666666667) internal successors, (71), 12 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:24,994 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:24,994 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:25,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:25,200 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 [2022-12-12 18:29:25,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:25,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:25,201 INFO L85 PathProgramCache]: Analyzing trace with hash -926083054, now seen corresponding path program 1 times [2022-12-12 18:29:25,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:25,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449008384] [2022-12-12 18:29:25,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:25,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:25,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:25,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:25,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449008384] [2022-12-12 18:29:25,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449008384] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:25,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325881778] [2022-12-12 18:29:25,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:25,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:25,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:25,306 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:25,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 18:29:25,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:25,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-12 18:29:25,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:25,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:25,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:25,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325881778] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:25,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:25,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-12-12 18:29:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751942928] [2022-12-12 18:29:25,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-12 18:29:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:25,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-12 18:29:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-12-12 18:29:25,500 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:25,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 148 transitions, 2033 flow. Second operand has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:25,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:25,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:25,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:26,069 INFO L130 PetriNetUnfolder]: 1119/1906 cut-off events. [2022-12-12 18:29:26,070 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:26,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14587 conditions, 1906 events. 1119/1906 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 221. Compared 10893 event pairs, 24 based on Foata normal form. 343/977 useless extension candidates. Maximal degree in co-relation 14559. Up to 1773 conditions per place. [2022-12-12 18:29:26,079 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 135 selfloop transitions, 70 changer transitions 120/329 dead transitions. [2022-12-12 18:29:26,080 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 329 transitions, 5217 flow [2022-12-12 18:29:26,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 18:29:26,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 18:29:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 288 transitions. [2022-12-12 18:29:26,081 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5925925925925926 [2022-12-12 18:29:26,082 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 53 predicate places. [2022-12-12 18:29:26,082 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 329 transitions, 5217 flow [2022-12-12 18:29:26,091 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 85 places, 209 transitions, 3297 flow [2022-12-12 18:29:26,091 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 209 transitions, 3297 flow [2022-12-12 18:29:26,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.923076923076923) internal successors, (77), 13 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:26,092 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:26,092 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:26,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:26,297 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,SelfDestructingSolverStorable6 [2022-12-12 18:29:26,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:26,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1957813302, now seen corresponding path program 1 times [2022-12-12 18:29:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:26,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319938203] [2022-12-12 18:29:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:26,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:26,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319938203] [2022-12-12 18:29:26,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319938203] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:26,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122283596] [2022-12-12 18:29:26,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:26,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:26,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:26,392 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:26,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 18:29:26,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:26,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 18:29:26,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:26,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:26,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:26,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:26,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122283596] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:26,605 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:26,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 18:29:26,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681263444] [2022-12-12 18:29:26,606 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:26,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 18:29:26,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:26,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 18:29:26,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2022-12-12 18:29:26,607 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:26,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 209 transitions, 3297 flow. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:26,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:26,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:26,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:27,195 INFO L130 PetriNetUnfolder]: 1332/2379 cut-off events. [2022-12-12 18:29:27,195 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:27,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20262 conditions, 2379 events. 1332/2379 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 14357 event pairs, 3 based on Foata normal form. 294/1065 useless extension candidates. Maximal degree in co-relation 20231. Up to 2197 conditions per place. [2022-12-12 18:29:27,211 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 182 selfloop transitions, 101 changer transitions 60/347 dead transitions. [2022-12-12 18:29:27,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 347 transitions, 6191 flow [2022-12-12 18:29:27,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-12 18:29:27,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-12-12 18:29:27,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 274 transitions. [2022-12-12 18:29:27,213 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5637860082304527 [2022-12-12 18:29:27,214 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 70 predicate places. [2022-12-12 18:29:27,214 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 347 transitions, 6191 flow [2022-12-12 18:29:27,228 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 287 transitions, 5111 flow [2022-12-12 18:29:27,228 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 287 transitions, 5111 flow [2022-12-12 18:29:27,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:27,229 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:27,229 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:27,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:27,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:27,435 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:27,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:27,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1960494114, now seen corresponding path program 1 times [2022-12-12 18:29:27,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:27,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659491327] [2022-12-12 18:29:27,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:27,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:27,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:27,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:27,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659491327] [2022-12-12 18:29:27,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659491327] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:27,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461454638] [2022-12-12 18:29:27,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:27,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:27,523 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:27,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 18:29:27,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:27,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 18:29:27,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:27,620 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:27,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:27,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461454638] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:27,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:27,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-12-12 18:29:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652950927] [2022-12-12 18:29:27,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:27,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-12 18:29:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-12 18:29:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-12-12 18:29:27,702 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:27,702 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 287 transitions, 5111 flow. Second operand has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:27,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:27,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:28,627 INFO L130 PetriNetUnfolder]: 1767/3169 cut-off events. [2022-12-12 18:29:28,627 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:28,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30090 conditions, 3169 events. 1767/3169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 20577 event pairs, 63 based on Foata normal form. 343/1394 useless extension candidates. Maximal degree in co-relation 30056. Up to 2953 conditions per place. [2022-12-12 18:29:28,641 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 128 selfloop transitions, 114 changer transitions 258/504 dead transitions. [2022-12-12 18:29:28,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 504 transitions, 10017 flow [2022-12-12 18:29:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-12 18:29:28,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-12-12 18:29:28,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 330 transitions. [2022-12-12 18:29:28,643 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2022-12-12 18:29:28,644 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 91 predicate places. [2022-12-12 18:29:28,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 504 transitions, 10017 flow [2022-12-12 18:29:28,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 246 transitions, 4857 flow [2022-12-12 18:29:28,657 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 246 transitions, 4857 flow [2022-12-12 18:29:28,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.785714285714286) internal successors, (81), 14 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:28,658 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:28,658 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:28,666 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:28,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:28,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:28,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1548320061, now seen corresponding path program 1 times [2022-12-12 18:29:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:28,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348792814] [2022-12-12 18:29:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:28,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348792814] [2022-12-12 18:29:28,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348792814] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:28,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287314195] [2022-12-12 18:29:28,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:28,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:28,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:28,995 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:28,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 18:29:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:29,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-12 18:29:29,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:29,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:29,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287314195] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:29,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:29,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-12-12 18:29:29,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446077999] [2022-12-12 18:29:29,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:29,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-12 18:29:29,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-12 18:29:29,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-12-12 18:29:29,233 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:29,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 246 transitions, 4857 flow. Second operand has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:29,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:29,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:29,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:30,557 INFO L130 PetriNetUnfolder]: 1942/3420 cut-off events. [2022-12-12 18:29:30,557 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:30,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35481 conditions, 3420 events. 1942/3420 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 21036 event pairs, 24 based on Foata normal form. 441/1779 useless extension candidates. Maximal degree in co-relation 35444. Up to 3168 conditions per place. [2022-12-12 18:29:30,571 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 135 selfloop transitions, 133 changer transitions 276/548 dead transitions. [2022-12-12 18:29:30,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 548 transitions, 11985 flow [2022-12-12 18:29:30,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-12-12 18:29:30,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2022-12-12 18:29:30,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 499 transitions. [2022-12-12 18:29:30,574 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5133744855967078 [2022-12-12 18:29:30,574 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 126 predicate places. [2022-12-12 18:29:30,575 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 548 transitions, 11985 flow [2022-12-12 18:29:30,588 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 272 transitions, 5913 flow [2022-12-12 18:29:30,588 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 272 transitions, 5913 flow [2022-12-12 18:29:30,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.5) internal successors, (121), 22 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:30,588 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:30,588 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:30,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:30,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-12 18:29:30,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:30,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:30,796 INFO L85 PathProgramCache]: Analyzing trace with hash -153652929, now seen corresponding path program 2 times [2022-12-12 18:29:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:30,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172981597] [2022-12-12 18:29:30,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:30,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:31,054 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:31,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:31,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172981597] [2022-12-12 18:29:31,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172981597] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:31,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052956681] [2022-12-12 18:29:31,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:29:31,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:31,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:31,056 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:31,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 18:29:31,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:29:31,130 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:29:31,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 18:29:31,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:31,200 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:31,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:31,576 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:31,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052956681] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:31,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:31,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-12-12 18:29:31,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151932073] [2022-12-12 18:29:31,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:31,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 18:29:31,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:31,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 18:29:31,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=857, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 18:29:31,578 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:31,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 272 transitions, 5913 flow. Second operand has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:31,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:31,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:31,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:32,921 INFO L130 PetriNetUnfolder]: 1386/2742 cut-off events. [2022-12-12 18:29:32,922 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:32,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30198 conditions, 2742 events. 1386/2742 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 16490 event pairs, 24 based on Foata normal form. 784/1750 useless extension candidates. Maximal degree in co-relation 30158. Up to 2458 conditions per place. [2022-12-12 18:29:32,934 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 259 selfloop transitions, 121 changer transitions 216/600 dead transitions. [2022-12-12 18:29:32,934 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 600 transitions, 14321 flow [2022-12-12 18:29:32,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-12-12 18:29:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-12-12 18:29:32,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 475 transitions. [2022-12-12 18:29:32,937 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.46296296296296297 [2022-12-12 18:29:32,938 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 163 predicate places. [2022-12-12 18:29:32,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 600 transitions, 14321 flow [2022-12-12 18:29:32,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 384 transitions, 9137 flow [2022-12-12 18:29:32,951 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 384 transitions, 9137 flow [2022-12-12 18:29:32,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.294117647058823) internal successors, (180), 34 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:32,953 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:32,953 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:32,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:33,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:33,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:33,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:33,160 INFO L85 PathProgramCache]: Analyzing trace with hash 487373703, now seen corresponding path program 1 times [2022-12-12 18:29:33,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:33,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420943578] [2022-12-12 18:29:33,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:33,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:33,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:33,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420943578] [2022-12-12 18:29:33,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420943578] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:33,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892322126] [2022-12-12 18:29:33,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:33,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:33,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:33,484 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:33,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 18:29:33,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:33,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 18:29:33,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:33,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:33,964 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:33,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892322126] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:33,966 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:33,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2022-12-12 18:29:33,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546119187] [2022-12-12 18:29:33,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:33,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-12 18:29:33,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:33,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-12 18:29:33,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=968, Unknown=0, NotChecked=0, Total=1190 [2022-12-12 18:29:33,969 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:33,970 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 384 transitions, 9137 flow. Second operand has 35 states, 35 states have (on average 5.3428571428571425) internal successors, (187), 35 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:33,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:33,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:33,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:35,729 INFO L130 PetriNetUnfolder]: 1532/3013 cut-off events. [2022-12-12 18:29:35,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:35,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35592 conditions, 3013 events. 1532/3013 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 18602 event pairs, 24 based on Foata normal form. 784/1931 useless extension candidates. Maximal degree in co-relation 35549. Up to 2677 conditions per place. [2022-12-12 18:29:35,744 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 278 selfloop transitions, 213 changer transitions 252/747 dead transitions. [2022-12-12 18:29:35,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 747 transitions, 19335 flow [2022-12-12 18:29:35,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 18:29:35,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 18:29:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 520 transitions. [2022-12-12 18:29:35,749 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4377104377104377 [2022-12-12 18:29:35,750 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 206 predicate places. [2022-12-12 18:29:35,750 INFO L82 GeneralOperation]: Start removeDead. Operand has 238 places, 747 transitions, 19335 flow [2022-12-12 18:29:35,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 238 places, 495 transitions, 12783 flow [2022-12-12 18:29:35,768 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 495 transitions, 12783 flow [2022-12-12 18:29:35,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 5.3428571428571425) internal successors, (187), 35 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:35,768 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:35,768 INFO L214 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:35,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:35,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:35,974 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:35,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:35,975 INFO L85 PathProgramCache]: Analyzing trace with hash 8409081, now seen corresponding path program 2 times [2022-12-12 18:29:35,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:35,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973221805] [2022-12-12 18:29:35,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:35,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:36,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:36,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973221805] [2022-12-12 18:29:36,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973221805] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:36,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567434368] [2022-12-12 18:29:36,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:29:36,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:36,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:36,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:29:36,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 18:29:36,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:29:36,320 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:29:36,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 18:29:36,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:36,371 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:36,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:36,653 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:36,654 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567434368] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:36,654 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:36,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-12-12 18:29:36,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578330566] [2022-12-12 18:29:36,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:36,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-12 18:29:36,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:36,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-12 18:29:36,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2022-12-12 18:29:36,657 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:36,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 495 transitions, 12783 flow. Second operand has 34 states, 34 states have (on average 5.323529411764706) internal successors, (181), 34 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:36,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:36,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:36,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:38,998 INFO L130 PetriNetUnfolder]: 2679/5067 cut-off events. [2022-12-12 18:29:38,998 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:39,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65268 conditions, 5067 events. 2679/5067 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 32175 event pairs, 3 based on Foata normal form. 784/2755 useless extension candidates. Maximal degree in co-relation 65222. Up to 4593 conditions per place. [2022-12-12 18:29:39,026 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 357 selfloop transitions, 326 changer transitions 252/939 dead transitions. [2022-12-12 18:29:39,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 939 transitions, 26197 flow [2022-12-12 18:29:39,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-12-12 18:29:39,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2022-12-12 18:29:39,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 695 transitions. [2022-12-12 18:29:39,035 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4766803840877915 [2022-12-12 18:29:39,036 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 259 predicate places. [2022-12-12 18:29:39,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 291 places, 939 transitions, 26197 flow [2022-12-12 18:29:39,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 291 places, 687 transitions, 19141 flow [2022-12-12 18:29:39,066 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 687 transitions, 19141 flow [2022-12-12 18:29:39,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.323529411764706) internal successors, (181), 34 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:39,067 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:39,067 INFO L214 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:39,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:39,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 18:29:39,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:39,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:39,273 INFO L85 PathProgramCache]: Analyzing trace with hash 196763397, now seen corresponding path program 3 times [2022-12-12 18:29:39,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:39,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930530972] [2022-12-12 18:29:39,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:39,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:39,577 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:39,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930530972] [2022-12-12 18:29:39,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930530972] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:39,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241006230] [2022-12-12 18:29:39,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:29:39,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:39,578 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:39,580 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) [2022-12-12 18:29:39,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 18:29:39,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-12-12 18:29:39,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:29:39,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 18:29:39,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:39,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:40,191 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:40,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241006230] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:40,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:40,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 43 [2022-12-12 18:29:40,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352906011] [2022-12-12 18:29:40,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:40,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:29:40,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:40,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:29:40,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=472, Invalid=1508, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:29:40,194 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:40,194 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 687 transitions, 19141 flow. Second operand has 45 states, 45 states have (on average 5.2444444444444445) internal successors, (236), 45 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:40,194 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:40,194 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:40,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:44,297 INFO L130 PetriNetUnfolder]: 4933/9167 cut-off events. [2022-12-12 18:29:44,297 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:29:44,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127940 conditions, 9167 events. 4933/9167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 61764 event pairs, 99 based on Foata normal form. 1127/4588 useless extension candidates. Maximal degree in co-relation 127891. Up to 8446 conditions per place. [2022-12-12 18:29:44,324 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 373 selfloop transitions, 406 changer transitions 804/1587 dead transitions. [2022-12-12 18:29:44,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 1587 transitions, 47507 flow [2022-12-12 18:29:44,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-12-12 18:29:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2022-12-12 18:29:44,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 1114 transitions. [2022-12-12 18:29:44,327 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4970995091477019 [2022-12-12 18:29:44,328 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 341 predicate places. [2022-12-12 18:29:44,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 373 places, 1587 transitions, 47507 flow [2022-12-12 18:29:44,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 373 places, 783 transitions, 23387 flow [2022-12-12 18:29:44,355 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 783 transitions, 23387 flow [2022-12-12 18:29:44,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.2444444444444445) internal successors, (236), 45 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:44,355 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:44,355 INFO L214 CegarLoopForPetriNet]: trace histogram [18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:44,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:44,561 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,SelfDestructingSolverStorable13 [2022-12-12 18:29:44,561 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:44,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:44,562 INFO L85 PathProgramCache]: Analyzing trace with hash -347550453, now seen corresponding path program 4 times [2022-12-12 18:29:44,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:44,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486702403] [2022-12-12 18:29:44,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:44,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:45,445 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:45,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486702403] [2022-12-12 18:29:45,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486702403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:45,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965969098] [2022-12-12 18:29:45,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:29:45,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:45,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:45,448 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) [2022-12-12 18:29:45,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 18:29:45,554 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 18:29:45,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:29:45,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 43 conjunts are in the unsatisfiable core [2022-12-12 18:29:45,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:45,649 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:45,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 324 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:46,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965969098] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:46,386 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:46,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 79 [2022-12-12 18:29:46,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397626794] [2022-12-12 18:29:46,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:46,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 81 states [2022-12-12 18:29:46,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:46,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2022-12-12 18:29:46,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1506, Invalid=4974, Unknown=0, NotChecked=0, Total=6480 [2022-12-12 18:29:46,391 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:46,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 783 transitions, 23387 flow. Second operand has 81 states, 81 states have (on average 5.135802469135802) internal successors, (416), 81 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:46,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:46,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:46,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:49,351 INFO L130 PetriNetUnfolder]: 1333/2724 cut-off events. [2022-12-12 18:29:49,351 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:49,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37130 conditions, 2724 events. 1333/2724 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 14818 event pairs, 24 based on Foata normal form. 147/1887 useless extension candidates. Maximal degree in co-relation 37078. Up to 2256 conditions per place. [2022-12-12 18:29:49,366 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 453 selfloop transitions, 475 changer transitions 72/1004 dead transitions. [2022-12-12 18:29:49,367 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 1004 transitions, 32017 flow [2022-12-12 18:29:49,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-12-12 18:29:49,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-12-12 18:29:49,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 631 transitions. [2022-12-12 18:29:49,369 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.29212962962962963 [2022-12-12 18:29:49,369 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 420 predicate places. [2022-12-12 18:29:49,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 1004 transitions, 32017 flow [2022-12-12 18:29:49,393 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 932 transitions, 29713 flow [2022-12-12 18:29:49,394 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 932 transitions, 29713 flow [2022-12-12 18:29:49,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 81 states, 81 states have (on average 5.135802469135802) internal successors, (416), 81 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:49,394 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:49,394 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:49,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:49,594 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,SelfDestructingSolverStorable14 [2022-12-12 18:29:49,595 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:49,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:49,595 INFO L85 PathProgramCache]: Analyzing trace with hash -234928943, now seen corresponding path program 1 times [2022-12-12 18:29:49,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:49,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030022741] [2022-12-12 18:29:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:49,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,685 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:50,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:50,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030022741] [2022-12-12 18:29:50,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030022741] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:50,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630064247] [2022-12-12 18:29:50,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:50,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:50,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:50,689 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) [2022-12-12 18:29:50,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 18:29:50,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:50,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:29:50,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:50,916 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:50,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:51,742 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:51,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630064247] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:51,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:51,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:29:51,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464303205] [2022-12-12 18:29:51,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:51,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:29:51,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:51,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:29:51,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=1426, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:29:51,746 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:51,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 932 transitions, 29713 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:51,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:51,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:51,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:53,295 INFO L130 PetriNetUnfolder]: 1063/2253 cut-off events. [2022-12-12 18:29:53,296 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31368 conditions, 2253 events. 1063/2253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 11686 event pairs, 24 based on Foata normal form. 98/1697 useless extension candidates. Maximal degree in co-relation 31313. Up to 1782 conditions per place. [2022-12-12 18:29:53,312 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 889 selfloop transitions, 111 changer transitions 24/1028 dead transitions. [2022-12-12 18:29:53,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 1028 transitions, 34833 flow [2022-12-12 18:29:53,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 18:29:53,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 18:29:53,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 339 transitions. [2022-12-12 18:29:53,313 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27294685990338163 [2022-12-12 18:29:53,313 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 465 predicate places. [2022-12-12 18:29:53,313 INFO L82 GeneralOperation]: Start removeDead. Operand has 497 places, 1028 transitions, 34833 flow [2022-12-12 18:29:53,335 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 497 places, 1004 transitions, 34017 flow [2022-12-12 18:29:53,335 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 1004 transitions, 34017 flow [2022-12-12 18:29:53,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:53,335 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:53,335 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:53,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:53,536 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,SelfDestructingSolverStorable15 [2022-12-12 18:29:53,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:53,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:53,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1173189569, now seen corresponding path program 2 times [2022-12-12 18:29:53,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:53,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591489438] [2022-12-12 18:29:53,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:53,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:54,574 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:54,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591489438] [2022-12-12 18:29:54,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591489438] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:54,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795958764] [2022-12-12 18:29:54,575 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:29:54,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:54,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:54,577 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) [2022-12-12 18:29:54,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 18:29:54,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:29:54,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:29:54,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:29:54,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:54,847 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:54,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:55,642 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:55,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795958764] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:55,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:55,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:29:55,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977014151] [2022-12-12 18:29:55,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:55,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:29:55,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:55,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:29:55,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=1530, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:29:55,644 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:55,645 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 1004 transitions, 34017 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:55,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:55,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:55,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:29:57,329 INFO L130 PetriNetUnfolder]: 1194/2537 cut-off events. [2022-12-12 18:29:57,330 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:29:57,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37109 conditions, 2537 events. 1194/2537 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 13559 event pairs, 24 based on Foata normal form. 98/1921 useless extension candidates. Maximal degree in co-relation 37051. Up to 1996 conditions per place. [2022-12-12 18:29:57,348 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 956 selfloop transitions, 210 changer transitions 24/1194 dead transitions. [2022-12-12 18:29:57,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 545 places, 1194 transitions, 42857 flow [2022-12-12 18:29:57,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-12 18:29:57,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-12 18:29:57,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 362 transitions. [2022-12-12 18:29:57,350 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.273620559334845 [2022-12-12 18:29:57,350 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 513 predicate places. [2022-12-12 18:29:57,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 1194 transitions, 42857 flow [2022-12-12 18:29:57,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 1170 transitions, 41993 flow [2022-12-12 18:29:57,420 INFO L495 AbstractCegarLoop]: Abstraction has has 545 places, 1170 transitions, 41993 flow [2022-12-12 18:29:57,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:57,420 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:29:57,420 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:29:57,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 18:29:57,625 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,SelfDestructingSolverStorable16 [2022-12-12 18:29:57,626 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:29:57,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:29:57,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1072939991, now seen corresponding path program 1 times [2022-12-12 18:29:57,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:29:57,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126244106] [2022-12-12 18:29:57,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:29:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:58,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:29:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126244106] [2022-12-12 18:29:58,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126244106] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:29:58,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [127417860] [2022-12-12 18:29:58,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:29:58,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:29:58,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:29:58,576 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) [2022-12-12 18:29:58,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 18:29:58,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:29:58,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:29:58,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:29:58,796 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:58,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:29:59,490 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:29:59,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [127417860] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:29:59,491 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:29:59,491 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:29:59,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666728708] [2022-12-12 18:29:59,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:29:59,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:29:59,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:29:59,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:29:59,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=415, Invalid=1565, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:29:59,493 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:29:59,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 545 places, 1170 transitions, 41993 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:29:59,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:29:59,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:29:59,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:01,406 INFO L130 PetriNetUnfolder]: 1278/2676 cut-off events. [2022-12-12 18:30:01,406 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:30:01,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41441 conditions, 2676 events. 1278/2676 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 14296 event pairs, 24 based on Foata normal form. 98/2000 useless extension candidates. Maximal degree in co-relation 41380. Up to 2116 conditions per place. [2022-12-12 18:30:01,429 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 900 selfloop transitions, 338 changer transitions 24/1266 dead transitions. [2022-12-12 18:30:01,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 595 places, 1266 transitions, 47973 flow [2022-12-12 18:30:01,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-12-12 18:30:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2022-12-12 18:30:01,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 376 transitions. [2022-12-12 18:30:01,430 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2730573710965868 [2022-12-12 18:30:01,431 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 563 predicate places. [2022-12-12 18:30:01,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 595 places, 1266 transitions, 47973 flow [2022-12-12 18:30:01,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 595 places, 1242 transitions, 47061 flow [2022-12-12 18:30:01,461 INFO L495 AbstractCegarLoop]: Abstraction has has 595 places, 1242 transitions, 47061 flow [2022-12-12 18:30:01,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:01,461 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:01,461 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:01,466 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:01,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-12 18:30:01,662 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:01,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:01,662 INFO L85 PathProgramCache]: Analyzing trace with hash 162913683, now seen corresponding path program 2 times [2022-12-12 18:30:01,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:01,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48262904] [2022-12-12 18:30:01,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:01,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:02,521 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:02,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:02,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48262904] [2022-12-12 18:30:02,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48262904] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:02,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754840354] [2022-12-12 18:30:02,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:30:02,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:02,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:02,528 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:02,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 18:30:02,607 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:30:02,607 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:02,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:02,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:02,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:03,420 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:03,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754840354] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:03,421 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:03,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:30:03,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050572851] [2022-12-12 18:30:03,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:03,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:30:03,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:03,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:30:03,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1522, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:30:03,422 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:03,423 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 595 places, 1242 transitions, 47061 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:03,423 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:03,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:03,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:05,513 INFO L130 PetriNetUnfolder]: 1406/2952 cut-off events. [2022-12-12 18:30:05,513 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:30:05,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47822 conditions, 2952 events. 1406/2952 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 15938 event pairs, 24 based on Foata normal form. 98/2216 useless extension candidates. Maximal degree in co-relation 47758. Up to 2324 conditions per place. [2022-12-12 18:30:05,536 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 964 selfloop transitions, 434 changer transitions 24/1426 dead transitions. [2022-12-12 18:30:05,536 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 1426 transitions, 56897 flow [2022-12-12 18:30:05,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-12-12 18:30:05,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2022-12-12 18:30:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 380 transitions. [2022-12-12 18:30:05,537 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2706552706552707 [2022-12-12 18:30:05,538 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 614 predicate places. [2022-12-12 18:30:05,538 INFO L82 GeneralOperation]: Start removeDead. Operand has 646 places, 1426 transitions, 56897 flow [2022-12-12 18:30:05,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 646 places, 1402 transitions, 55937 flow [2022-12-12 18:30:05,571 INFO L495 AbstractCegarLoop]: Abstraction has has 646 places, 1402 transitions, 55937 flow [2022-12-12 18:30:05,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:05,571 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:05,572 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:05,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:05,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:05,772 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1765317596, now seen corresponding path program 1 times [2022-12-12 18:30:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:05,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546652501] [2022-12-12 18:30:05,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:05,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:06,606 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:06,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:06,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546652501] [2022-12-12 18:30:06,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546652501] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:06,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360210602] [2022-12-12 18:30:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:06,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:06,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:06,608 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:06,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 18:30:06,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:06,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:06,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:06,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:07,459 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:07,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360210602] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:07,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:07,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:30:07,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326711343] [2022-12-12 18:30:07,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:07,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:30:07,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:07,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:30:07,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1623, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:30:07,461 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:07,462 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 1402 transitions, 55937 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:07,462 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:07,462 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:07,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:09,781 INFO L130 PetriNetUnfolder]: 1510/3157 cut-off events. [2022-12-12 18:30:09,781 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:30:09,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53588 conditions, 3157 events. 1510/3157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 17500 event pairs, 24 based on Foata normal form. 98/2361 useless extension candidates. Maximal degree in co-relation 53521. Up to 2484 conditions per place. [2022-12-12 18:30:09,806 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 988 selfloop transitions, 522 changer transitions 24/1538 dead transitions. [2022-12-12 18:30:09,807 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 700 places, 1538 transitions, 64445 flow [2022-12-12 18:30:09,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2022-12-12 18:30:09,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2022-12-12 18:30:09,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 404 transitions. [2022-12-12 18:30:09,808 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27205387205387205 [2022-12-12 18:30:09,808 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 668 predicate places. [2022-12-12 18:30:09,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 700 places, 1538 transitions, 64445 flow [2022-12-12 18:30:09,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 700 places, 1514 transitions, 63437 flow [2022-12-12 18:30:09,847 INFO L495 AbstractCegarLoop]: Abstraction has has 700 places, 1514 transitions, 63437 flow [2022-12-12 18:30:09,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:09,848 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:09,848 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:09,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:10,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:10,048 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:10,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1607209799, now seen corresponding path program 3 times [2022-12-12 18:30:10,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:10,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987219823] [2022-12-12 18:30:10,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:10,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:10,896 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:10,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:10,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987219823] [2022-12-12 18:30:10,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987219823] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:10,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596699458] [2022-12-12 18:30:10,897 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:30:10,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:10,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:10,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:10,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-12 18:30:10,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-12-12 18:30:10,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:10,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:10,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:11,138 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:11,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:11,769 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:11,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596699458] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:11,769 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:11,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:30:11,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727503743] [2022-12-12 18:30:11,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:11,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:30:11,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:11,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:30:11,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=334, Invalid=1646, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:30:11,771 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:11,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 700 places, 1514 transitions, 63437 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:11,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:11,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:11,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:14,370 INFO L130 PetriNetUnfolder]: 1632/3406 cut-off events. [2022-12-12 18:30:14,370 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:30:14,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60474 conditions, 3406 events. 1632/3406 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 18834 event pairs, 24 based on Foata normal form. 98/2550 useless extension candidates. Maximal degree in co-relation 60404. Up to 2680 conditions per place. [2022-12-12 18:30:14,398 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1010 selfloop transitions, 648 changer transitions 24/1686 dead transitions. [2022-12-12 18:30:14,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 756 places, 1686 transitions, 74025 flow [2022-12-12 18:30:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-12-12 18:30:14,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-12-12 18:30:14,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 418 transitions. [2022-12-12 18:30:14,400 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2716049382716049 [2022-12-12 18:30:14,400 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 724 predicate places. [2022-12-12 18:30:14,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 756 places, 1686 transitions, 74025 flow [2022-12-12 18:30:14,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 756 places, 1662 transitions, 72969 flow [2022-12-12 18:30:14,455 INFO L495 AbstractCegarLoop]: Abstraction has has 756 places, 1662 transitions, 72969 flow [2022-12-12 18:30:14,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:14,455 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:14,455 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:14,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:14,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:14,656 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:14,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:14,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1610901442, now seen corresponding path program 2 times [2022-12-12 18:30:14,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:14,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072621168] [2022-12-12 18:30:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:14,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:14,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:15,480 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:15,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072621168] [2022-12-12 18:30:15,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072621168] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:15,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160387248] [2022-12-12 18:30:15,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:30:15,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:15,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:15,482 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:15,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-12 18:30:15,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:30:15,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:15,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:15,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:15,654 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:15,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:16,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160387248] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:16,264 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:16,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:30:16,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821813537] [2022-12-12 18:30:16,264 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:16,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:30:16,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:16,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:30:16,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:30:16,265 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:16,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 756 places, 1662 transitions, 72969 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:16,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:16,266 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:16,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:19,004 INFO L130 PetriNetUnfolder]: 1752/3661 cut-off events. [2022-12-12 18:30:19,004 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:30:19,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67670 conditions, 3661 events. 1752/3661 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 20788 event pairs, 24 based on Foata normal form. 98/2745 useless extension candidates. Maximal degree in co-relation 67597. Up to 2872 conditions per place. [2022-12-12 18:30:19,036 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1078 selfloop transitions, 724 changer transitions 24/1830 dead transitions. [2022-12-12 18:30:19,036 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 811 places, 1830 transitions, 84013 flow [2022-12-12 18:30:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-12-12 18:30:19,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-12-12 18:30:19,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 408 transitions. [2022-12-12 18:30:19,038 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2698412698412698 [2022-12-12 18:30:19,038 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 779 predicate places. [2022-12-12 18:30:19,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 811 places, 1830 transitions, 84013 flow [2022-12-12 18:30:19,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 811 places, 1806 transitions, 82909 flow [2022-12-12 18:30:19,093 INFO L495 AbstractCegarLoop]: Abstraction has has 811 places, 1806 transitions, 82909 flow [2022-12-12 18:30:19,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:19,094 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:19,094 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:19,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:19,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:19,294 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -655091025, now seen corresponding path program 4 times [2022-12-12 18:30:19,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:19,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663940619] [2022-12-12 18:30:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:19,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:20,160 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:20,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663940619] [2022-12-12 18:30:20,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663940619] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:20,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2056942078] [2022-12-12 18:30:20,160 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:30:20,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:20,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:20,162 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:20,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-12 18:30:20,241 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 18:30:20,241 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:20,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:20,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:20,380 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:20,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:21,013 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:21,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2056942078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:21,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:21,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:30:21,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392628138] [2022-12-12 18:30:21,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:21,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:30:21,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:21,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:30:21,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=1665, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:30:21,015 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:21,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 811 places, 1806 transitions, 82909 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:21,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:21,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:21,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:24,253 INFO L130 PetriNetUnfolder]: 1870/3906 cut-off events. [2022-12-12 18:30:24,254 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:30:24,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75148 conditions, 3906 events. 1870/3906 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 22730 event pairs, 24 based on Foata normal form. 98/2930 useless extension candidates. Maximal degree in co-relation 75072. Up to 3060 conditions per place. [2022-12-12 18:30:24,291 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1140 selfloop transitions, 802 changer transitions 24/1970 dead transitions. [2022-12-12 18:30:24,291 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 869 places, 1970 transitions, 94385 flow [2022-12-12 18:30:24,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-12-12 18:30:24,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2022-12-12 18:30:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 432 transitions. [2022-12-12 18:30:24,293 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2711864406779661 [2022-12-12 18:30:24,293 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 837 predicate places. [2022-12-12 18:30:24,293 INFO L82 GeneralOperation]: Start removeDead. Operand has 869 places, 1970 transitions, 94385 flow [2022-12-12 18:30:24,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 869 places, 1946 transitions, 93233 flow [2022-12-12 18:30:24,366 INFO L495 AbstractCegarLoop]: Abstraction has has 869 places, 1946 transitions, 93233 flow [2022-12-12 18:30:24,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:24,367 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:24,367 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:24,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-12 18:30:24,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:24,572 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:24,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:24,572 INFO L85 PathProgramCache]: Analyzing trace with hash 702146212, now seen corresponding path program 3 times [2022-12-12 18:30:24,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:24,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992007016] [2022-12-12 18:30:24,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:24,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:25,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:25,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992007016] [2022-12-12 18:30:25,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992007016] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:25,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096954172] [2022-12-12 18:30:25,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:30:25,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:25,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:25,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:25,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-12 18:30:25,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-12-12 18:30:25,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:25,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:25,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:25,632 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:25,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:26,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096954172] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:26,168 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:26,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:30:26,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691193949] [2022-12-12 18:30:26,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:26,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:30:26,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:26,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:30:26,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=1680, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:30:26,170 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:26,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 869 places, 1946 transitions, 93233 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:26,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:26,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:26,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:29,657 INFO L130 PetriNetUnfolder]: 1984/4137 cut-off events. [2022-12-12 18:30:29,658 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:30:29,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82796 conditions, 4137 events. 1984/4137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 24502 event pairs, 24 based on Foata normal form. 98/3101 useless extension candidates. Maximal degree in co-relation 82717. Up to 3240 conditions per place. [2022-12-12 18:30:29,699 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1194 selfloop transitions, 880 changer transitions 24/2102 dead transitions. [2022-12-12 18:30:29,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 2102 transitions, 104917 flow [2022-12-12 18:30:29,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2022-12-12 18:30:29,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2022-12-12 18:30:29,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 446 transitions. [2022-12-12 18:30:29,700 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2707953855494839 [2022-12-12 18:30:29,700 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 897 predicate places. [2022-12-12 18:30:29,700 INFO L82 GeneralOperation]: Start removeDead. Operand has 929 places, 2102 transitions, 104917 flow [2022-12-12 18:30:29,761 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 929 places, 2078 transitions, 103717 flow [2022-12-12 18:30:29,762 INFO L495 AbstractCegarLoop]: Abstraction has has 929 places, 2078 transitions, 103717 flow [2022-12-12 18:30:29,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:29,762 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:29,762 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:29,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:29,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:29,963 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 556846880, now seen corresponding path program 4 times [2022-12-12 18:30:29,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:29,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882962150] [2022-12-12 18:30:29,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:29,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:30,797 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:30,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882962150] [2022-12-12 18:30:30,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882962150] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:30,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824924946] [2022-12-12 18:30:30,798 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:30:30,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:30,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:30,799 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:30,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-12-12 18:30:30,881 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 18:30:30,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:30,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:30,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:30,962 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:30,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:31,466 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:31,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824924946] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:31,466 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:31,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:30:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234496723] [2022-12-12 18:30:31,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:31,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:30:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:30:31,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:30:31,468 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:31,468 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 2078 transitions, 103717 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:31,469 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:31,469 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:31,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:35,004 INFO L130 PetriNetUnfolder]: 2092/4351 cut-off events. [2022-12-12 18:30:35,005 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:30:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90487 conditions, 4351 events. 2092/4351 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 26027 event pairs, 24 based on Foata normal form. 98/3255 useless extension candidates. Maximal degree in co-relation 90405. Up to 3408 conditions per place. [2022-12-12 18:30:35,057 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1238 selfloop transitions, 956 changer transitions 24/2222 dead transitions. [2022-12-12 18:30:35,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 990 places, 2222 transitions, 115353 flow [2022-12-12 18:30:35,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-12 18:30:35,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-12 18:30:35,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 450 transitions. [2022-12-12 18:30:35,059 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.26881720430107525 [2022-12-12 18:30:35,059 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 958 predicate places. [2022-12-12 18:30:35,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 990 places, 2222 transitions, 115353 flow [2022-12-12 18:30:35,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 990 places, 2198 transitions, 114105 flow [2022-12-12 18:30:35,215 INFO L495 AbstractCegarLoop]: Abstraction has has 990 places, 2198 transitions, 114105 flow [2022-12-12 18:30:35,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:35,216 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:35,216 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:35,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:35,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-12 18:30:35,421 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:35,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:35,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1164687983, now seen corresponding path program 5 times [2022-12-12 18:30:35,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:35,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220510983] [2022-12-12 18:30:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:35,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:35,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:36,168 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:36,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:36,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220510983] [2022-12-12 18:30:36,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220510983] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568966092] [2022-12-12 18:30:36,169 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 18:30:36,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:36,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:36,170 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:36,172 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-12-12 18:30:36,259 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-12-12 18:30:36,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:36,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:36,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:36,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:36,983 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:36,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568966092] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:36,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:36,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:30:36,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347382903] [2022-12-12 18:30:36,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:36,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:30:36,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:36,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:30:36,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=282, Invalid=1698, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:30:36,985 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:36,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 990 places, 2198 transitions, 114105 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:36,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:36,986 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:36,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:41,546 INFO L130 PetriNetUnfolder]: 2198/4556 cut-off events. [2022-12-12 18:30:41,546 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:30:41,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98401 conditions, 4556 events. 2198/4556 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 27536 event pairs, 24 based on Foata normal form. 98/3400 useless extension candidates. Maximal degree in co-relation 98316. Up to 3572 conditions per place. [2022-12-12 18:30:41,589 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1288 selfloop transitions, 1022 changer transitions 24/2338 dead transitions. [2022-12-12 18:30:41,589 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1054 places, 2338 transitions, 126053 flow [2022-12-12 18:30:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-12 18:30:41,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2022-12-12 18:30:41,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 474 transitions. [2022-12-12 18:30:41,591 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27008547008547007 [2022-12-12 18:30:41,591 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1022 predicate places. [2022-12-12 18:30:41,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 1054 places, 2338 transitions, 126053 flow [2022-12-12 18:30:41,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1054 places, 2314 transitions, 124757 flow [2022-12-12 18:30:41,662 INFO L495 AbstractCegarLoop]: Abstraction has has 1054 places, 2314 transitions, 124757 flow [2022-12-12 18:30:41,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:41,663 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:41,663 INFO L214 CegarLoopForPetriNet]: trace histogram [20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:41,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:41,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-12 18:30:41,863 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:41,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:41,864 INFO L85 PathProgramCache]: Analyzing trace with hash 617175875, now seen corresponding path program 6 times [2022-12-12 18:30:41,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:41,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351352891] [2022-12-12 18:30:41,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:41,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:42,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351352891] [2022-12-12 18:30:42,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351352891] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:42,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592195627] [2022-12-12 18:30:42,597 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 18:30:42,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:42,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:42,599 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:42,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-12-12 18:30:42,694 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2022-12-12 18:30:42,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:42,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:42,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:42,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:43,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592195627] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:43,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:43,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:30:43,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079780170] [2022-12-12 18:30:43,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:43,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:30:43,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:43,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:30:43,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=290, Invalid=1602, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:30:43,257 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:43,257 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1054 places, 2314 transitions, 124757 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:43,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:43,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:43,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:47,903 INFO L130 PetriNetUnfolder]: 2294/4733 cut-off events. [2022-12-12 18:30:47,903 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:30:47,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106075 conditions, 4733 events. 2294/4733 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 28763 event pairs, 24 based on Foata normal form. 98/3517 useless extension candidates. Maximal degree in co-relation 105987. Up to 3716 conditions per place. [2022-12-12 18:30:47,948 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1296 selfloop transitions, 1110 changer transitions 24/2434 dead transitions. [2022-12-12 18:30:47,949 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1121 places, 2434 transitions, 136097 flow [2022-12-12 18:30:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-12 18:30:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-12 18:30:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 492 transitions. [2022-12-12 18:30:47,950 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2679738562091503 [2022-12-12 18:30:47,950 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1089 predicate places. [2022-12-12 18:30:47,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 1121 places, 2434 transitions, 136097 flow [2022-12-12 18:30:48,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1121 places, 2410 transitions, 134753 flow [2022-12-12 18:30:48,023 INFO L495 AbstractCegarLoop]: Abstraction has has 1121 places, 2410 transitions, 134753 flow [2022-12-12 18:30:48,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:48,023 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:48,023 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:48,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:48,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-12 18:30:48,224 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:48,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:48,224 INFO L85 PathProgramCache]: Analyzing trace with hash -603628012, now seen corresponding path program 2 times [2022-12-12 18:30:48,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:48,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855838364] [2022-12-12 18:30:48,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:48,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:48,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:49,068 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:49,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:49,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855838364] [2022-12-12 18:30:49,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855838364] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:49,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043399970] [2022-12-12 18:30:49,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:30:49,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:49,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:49,070 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:49,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-12-12 18:30:49,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:30:49,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:49,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:49,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:49,255 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:49,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:49,782 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:49,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043399970] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:49,782 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:49,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:30:49,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199748555] [2022-12-12 18:30:49,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:49,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:30:49,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:49,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:30:49,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=285, Invalid=1695, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:30:49,784 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:49,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1121 places, 2410 transitions, 134753 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:49,784 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:49,784 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:49,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:30:54,616 INFO L130 PetriNetUnfolder]: 2388/4909 cut-off events. [2022-12-12 18:30:54,616 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:30:54,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113924 conditions, 4909 events. 2388/4909 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 29653 event pairs, 24 based on Foata normal form. 98/3633 useless extension candidates. Maximal degree in co-relation 113833. Up to 3856 conditions per place. [2022-12-12 18:30:54,667 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1334 selfloop transitions, 1164 changer transitions 24/2526 dead transitions. [2022-12-12 18:30:54,667 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1191 places, 2526 transitions, 146293 flow [2022-12-12 18:30:54,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-12-12 18:30:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2022-12-12 18:30:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 516 transitions. [2022-12-12 18:30:54,668 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.26917057902973396 [2022-12-12 18:30:54,669 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1159 predicate places. [2022-12-12 18:30:54,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 1191 places, 2526 transitions, 146293 flow [2022-12-12 18:30:54,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1191 places, 2502 transitions, 144901 flow [2022-12-12 18:30:54,755 INFO L495 AbstractCegarLoop]: Abstraction has has 1191 places, 2502 transitions, 144901 flow [2022-12-12 18:30:54,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:54,755 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:30:54,755 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:30:54,760 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-12-12 18:30:54,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:54,956 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:30:54,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:30:54,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1717110950, now seen corresponding path program 3 times [2022-12-12 18:30:54,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:30:54,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054067363] [2022-12-12 18:30:54,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:30:54,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:30:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:30:55,795 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:55,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:30:55,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054067363] [2022-12-12 18:30:55,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054067363] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:30:55,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510378783] [2022-12-12 18:30:55,795 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:30:55,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:30:55,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:30:55,797 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:30:55,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-12-12 18:30:55,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-12-12 18:30:55,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:30:55,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:30:55,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:30:56,008 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:56,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:30:56,490 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:30:56,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510378783] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:30:56,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:30:56,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:30:56,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617907793] [2022-12-12 18:30:56,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:30:56,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:30:56,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:30:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:30:56,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1594, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:30:56,492 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:30:56,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1191 places, 2502 transitions, 144901 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:30:56,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:30:56,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:30:56,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:01,427 INFO L130 PetriNetUnfolder]: 2480/5076 cut-off events. [2022-12-12 18:31:01,427 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:31:01,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121928 conditions, 5076 events. 2480/5076 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 31180 event pairs, 24 based on Foata normal form. 98/3740 useless extension candidates. Maximal degree in co-relation 121834. Up to 3992 conditions per place. [2022-12-12 18:31:01,488 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1374 selfloop transitions, 1212 changer transitions 24/2614 dead transitions. [2022-12-12 18:31:01,488 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1260 places, 2614 transitions, 156617 flow [2022-12-12 18:31:01,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-12-12 18:31:01,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2022-12-12 18:31:01,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 506 transitions. [2022-12-12 18:31:01,489 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2677248677248677 [2022-12-12 18:31:01,490 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1228 predicate places. [2022-12-12 18:31:01,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 1260 places, 2614 transitions, 156617 flow [2022-12-12 18:31:01,580 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1260 places, 2590 transitions, 155177 flow [2022-12-12 18:31:01,580 INFO L495 AbstractCegarLoop]: Abstraction has has 1260 places, 2590 transitions, 155177 flow [2022-12-12 18:31:01,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:01,580 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:01,580 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:01,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:01,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-12-12 18:31:01,781 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1175294571, now seen corresponding path program 1 times [2022-12-12 18:31:01,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:01,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560396768] [2022-12-12 18:31:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:01,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:02,605 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:02,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:02,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560396768] [2022-12-12 18:31:02,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560396768] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:02,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890616755] [2022-12-12 18:31:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:02,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:02,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:02,607 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:02,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-12-12 18:31:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:02,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:02,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:02,773 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:02,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:03,274 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:03,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890616755] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:03,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:03,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:31:03,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326268514] [2022-12-12 18:31:03,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:31:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:31:03,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1686, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:31:03,276 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:03,276 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1260 places, 2590 transitions, 155177 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:03,276 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:03,276 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:03,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:09,223 INFO L130 PetriNetUnfolder]: 2570/5236 cut-off events. [2022-12-12 18:31:09,224 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:31:09,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130077 conditions, 5236 events. 2570/5236 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 32286 event pairs, 24 based on Foata normal form. 98/3840 useless extension candidates. Maximal degree in co-relation 129980. Up to 4124 conditions per place. [2022-12-12 18:31:09,283 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1408 selfloop transitions, 1262 changer transitions 24/2698 dead transitions. [2022-12-12 18:31:09,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1332 places, 2698 transitions, 167045 flow [2022-12-12 18:31:09,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2022-12-12 18:31:09,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2022-12-12 18:31:09,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 530 transitions. [2022-12-12 18:31:09,285 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2688990360223237 [2022-12-12 18:31:09,285 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1300 predicate places. [2022-12-12 18:31:09,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 1332 places, 2698 transitions, 167045 flow [2022-12-12 18:31:09,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1332 places, 2674 transitions, 165557 flow [2022-12-12 18:31:09,382 INFO L495 AbstractCegarLoop]: Abstraction has has 1332 places, 2674 transitions, 165557 flow [2022-12-12 18:31:09,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:09,382 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:09,382 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:09,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:09,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:09,583 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:09,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:09,583 INFO L85 PathProgramCache]: Analyzing trace with hash -973057692, now seen corresponding path program 5 times [2022-12-12 18:31:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:09,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691611985] [2022-12-12 18:31:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:09,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:10,371 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:10,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691611985] [2022-12-12 18:31:10,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691611985] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:10,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180147066] [2022-12-12 18:31:10,371 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 18:31:10,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:10,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:10,372 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:10,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-12-12 18:31:10,458 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-12-12 18:31:10,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:31:10,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:10,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:10,532 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:10,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:10,990 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:10,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180147066] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:10,991 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:10,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:31:10,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174524766] [2022-12-12 18:31:10,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:10,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:31:10,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:10,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:31:10,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:31:10,995 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:10,995 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1332 places, 2674 transitions, 165557 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:10,995 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:10,995 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:10,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:16,596 INFO L130 PetriNetUnfolder]: 2654/5378 cut-off events. [2022-12-12 18:31:16,596 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:31:16,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138100 conditions, 5378 events. 2654/5378 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 33285 event pairs, 24 based on Foata normal form. 98/3922 useless extension candidates. Maximal degree in co-relation 138000. Up to 4244 conditions per place. [2022-12-12 18:31:16,666 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1428 selfloop transitions, 1314 changer transitions 24/2770 dead transitions. [2022-12-12 18:31:16,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1405 places, 2770 transitions, 177041 flow [2022-12-12 18:31:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2022-12-12 18:31:16,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2022-12-12 18:31:16,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 534 transitions. [2022-12-12 18:31:16,668 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2672672672672673 [2022-12-12 18:31:16,669 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1373 predicate places. [2022-12-12 18:31:16,669 INFO L82 GeneralOperation]: Start removeDead. Operand has 1405 places, 2770 transitions, 177041 flow [2022-12-12 18:31:16,768 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1405 places, 2746 transitions, 175505 flow [2022-12-12 18:31:16,769 INFO L495 AbstractCegarLoop]: Abstraction has has 1405 places, 2746 transitions, 175505 flow [2022-12-12 18:31:16,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:16,769 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:16,769 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:16,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:16,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-12-12 18:31:16,970 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:16,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:16,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1888139180, now seen corresponding path program 6 times [2022-12-12 18:31:16,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:16,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904861231] [2022-12-12 18:31:16,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:16,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904861231] [2022-12-12 18:31:17,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904861231] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1364148628] [2022-12-12 18:31:17,780 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 18:31:17,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:17,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:17,782 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:17,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-12-12 18:31:17,885 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2022-12-12 18:31:17,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:31:17,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:17,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:17,984 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:17,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:18,489 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:18,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1364148628] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:18,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:18,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:31:18,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703421305] [2022-12-12 18:31:18,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:18,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:31:18,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:18,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:31:18,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:31:18,491 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:18,492 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1405 places, 2746 transitions, 175505 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:18,492 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:18,492 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:18,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:24,682 INFO L130 PetriNetUnfolder]: 2736/5512 cut-off events. [2022-12-12 18:31:24,682 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:31:24,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146227 conditions, 5512 events. 2736/5512 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 33717 event pairs, 24 based on Foata normal form. 98/3996 useless extension candidates. Maximal degree in co-relation 146124. Up to 4360 conditions per place. [2022-12-12 18:31:24,780 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1454 selfloop transitions, 1356 changer transitions 24/2838 dead transitions. [2022-12-12 18:31:24,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1481 places, 2838 transitions, 187061 flow [2022-12-12 18:31:24,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-12-12 18:31:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-12-12 18:31:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 558 transitions. [2022-12-12 18:31:24,782 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2683982683982684 [2022-12-12 18:31:24,783 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1449 predicate places. [2022-12-12 18:31:24,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 1481 places, 2838 transitions, 187061 flow [2022-12-12 18:31:25,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1481 places, 2814 transitions, 185477 flow [2022-12-12 18:31:25,056 INFO L495 AbstractCegarLoop]: Abstraction has has 1481 places, 2814 transitions, 185477 flow [2022-12-12 18:31:25,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:25,057 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:25,057 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:25,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:25,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:25,264 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:25,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:25,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1675467354, now seen corresponding path program 7 times [2022-12-12 18:31:25,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:25,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118396202] [2022-12-12 18:31:25,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:25,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:25,983 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:25,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:25,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118396202] [2022-12-12 18:31:25,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118396202] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:25,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843451864] [2022-12-12 18:31:25,985 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 18:31:25,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:25,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:25,987 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:25,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-12-12 18:31:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:26,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:26,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:26,137 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:26,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:26,675 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:26,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843451864] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:26,676 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:26,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:31:26,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357508548] [2022-12-12 18:31:26,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:26,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:31:26,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:26,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:31:26,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1546, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:31:26,678 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:26,678 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1481 places, 2814 transitions, 185477 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:26,678 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:26,678 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:26,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:33,005 INFO L130 PetriNetUnfolder]: 2816/5635 cut-off events. [2022-12-12 18:31:33,005 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-12-12 18:31:33,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154443 conditions, 5635 events. 2816/5635 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 34855 event pairs, 24 based on Foata normal form. 98/4059 useless extension candidates. Maximal degree in co-relation 154337. Up to 4472 conditions per place. [2022-12-12 18:31:33,095 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1482 selfloop transitions, 1392 changer transitions 24/2902 dead transitions. [2022-12-12 18:31:33,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1556 places, 2902 transitions, 197081 flow [2022-12-12 18:31:33,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-12-12 18:31:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-12-12 18:31:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 548 transitions. [2022-12-12 18:31:33,097 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.26705653021442494 [2022-12-12 18:31:33,098 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1524 predicate places. [2022-12-12 18:31:33,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 1556 places, 2902 transitions, 197081 flow [2022-12-12 18:31:33,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1556 places, 2878 transitions, 195449 flow [2022-12-12 18:31:33,250 INFO L495 AbstractCegarLoop]: Abstraction has has 1556 places, 2878 transitions, 195449 flow [2022-12-12 18:31:33,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:33,250 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:33,250 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:33,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:33,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:33,456 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:33,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:33,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1061464272, now seen corresponding path program 8 times [2022-12-12 18:31:33,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:33,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418789174] [2022-12-12 18:31:33,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:33,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:33,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:34,162 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418789174] [2022-12-12 18:31:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418789174] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264560841] [2022-12-12 18:31:34,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 18:31:34,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:34,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:34,164 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:34,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-12-12 18:31:34,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 18:31:34,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:31:34,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:34,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:34,321 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:34,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:34,777 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:34,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264560841] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:34,778 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:34,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 42 [2022-12-12 18:31:34,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112015269] [2022-12-12 18:31:34,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:34,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-12-12 18:31:34,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:34,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-12-12 18:31:34,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=370, Invalid=1522, Unknown=0, NotChecked=0, Total=1892 [2022-12-12 18:31:34,779 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:34,780 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1556 places, 2878 transitions, 195449 flow. Second operand has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:34,780 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:34,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:34,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:41,619 INFO L130 PetriNetUnfolder]: 2892/5756 cut-off events. [2022-12-12 18:31:41,619 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:31:41,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162609 conditions, 5756 events. 2892/5756 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 305. Compared 35691 event pairs, 24 based on Foata normal form. 98/4120 useless extension candidates. Maximal degree in co-relation 162500. Up to 4576 conditions per place. [2022-12-12 18:31:41,719 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1498 selfloop transitions, 1432 changer transitions 24/2958 dead transitions. [2022-12-12 18:31:41,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1633 places, 2958 transitions, 206797 flow [2022-12-12 18:31:41,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-12-12 18:31:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2022-12-12 18:31:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 562 transitions. [2022-12-12 18:31:41,721 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2668566001899335 [2022-12-12 18:31:41,722 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1601 predicate places. [2022-12-12 18:31:41,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 1633 places, 2958 transitions, 206797 flow [2022-12-12 18:31:42,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1633 places, 2934 transitions, 205117 flow [2022-12-12 18:31:42,066 INFO L495 AbstractCegarLoop]: Abstraction has has 1633 places, 2934 transitions, 205117 flow [2022-12-12 18:31:42,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.090909090909091) internal successors, (224), 44 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:42,066 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:42,066 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:42,072 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:42,272 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:42,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:42,272 INFO L85 PathProgramCache]: Analyzing trace with hash -918429460, now seen corresponding path program 9 times [2022-12-12 18:31:42,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:42,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767022335] [2022-12-12 18:31:42,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:42,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:42,960 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:42,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767022335] [2022-12-12 18:31:42,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767022335] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:42,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392339279] [2022-12-12 18:31:42,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 18:31:42,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:42,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:42,963 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:42,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-12-12 18:31:43,065 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 20 check-sat command(s) [2022-12-12 18:31:43,065 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:31:43,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:43,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:43,137 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:43,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:43,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392339279] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:43,643 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:43,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:31:43,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352821385] [2022-12-12 18:31:43,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:31:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:31:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=432, Invalid=1548, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:31:43,644 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:43,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1633 places, 2934 transitions, 205117 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:43,645 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:43,645 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:43,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:50,671 INFO L130 PetriNetUnfolder]: 2955/5838 cut-off events. [2022-12-12 18:31:50,671 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:31:50,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170139 conditions, 5838 events. 2955/5838 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 35592 event pairs, 45 based on Foata normal form. 98/4145 useless extension candidates. Maximal degree in co-relation 170027. Up to 4657 conditions per place. [2022-12-12 18:31:50,745 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1465 selfloop transitions, 1495 changer transitions 27/2991 dead transitions. [2022-12-12 18:31:50,745 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1717 places, 2991 transitions, 215081 flow [2022-12-12 18:31:50,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-12 18:31:50,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-12-12 18:31:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 635 transitions. [2022-12-12 18:31:50,747 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2766884531590414 [2022-12-12 18:31:50,747 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1685 predicate places. [2022-12-12 18:31:50,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 1717 places, 2991 transitions, 215081 flow [2022-12-12 18:31:50,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1717 places, 2964 transitions, 213137 flow [2022-12-12 18:31:50,887 INFO L495 AbstractCegarLoop]: Abstraction has has 1717 places, 2964 transitions, 213137 flow [2022-12-12 18:31:50,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:50,887 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:31:50,887 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:31:50,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-12-12 18:31:51,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-12-12 18:31:51,088 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:31:51,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:31:51,088 INFO L85 PathProgramCache]: Analyzing trace with hash -918148600, now seen corresponding path program 10 times [2022-12-12 18:31:51,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:31:51,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915136368] [2022-12-12 18:31:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:31:51,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:31:51,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:31:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:51,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:31:51,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915136368] [2022-12-12 18:31:51,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915136368] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:31:51,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617899925] [2022-12-12 18:31:51,769 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 18:31:51,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:31:51,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:31:51,771 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:31:51,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-12-12 18:31:51,856 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 18:31:51,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:31:51,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:31:51,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:31:51,926 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:51,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:31:52,404 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:31:52,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617899925] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:31:52,404 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:31:52,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 43 [2022-12-12 18:31:52,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214364636] [2022-12-12 18:31:52,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:31:52,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-12-12 18:31:52,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:31:52,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-12-12 18:31:52,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=469, Invalid=1511, Unknown=0, NotChecked=0, Total=1980 [2022-12-12 18:31:52,407 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:31:52,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1717 places, 2964 transitions, 213137 flow. Second operand has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:31:52,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:31:52,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:31:52,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:31:59,645 INFO L130 PetriNetUnfolder]: 3052/5993 cut-off events. [2022-12-12 18:31:59,646 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:31:59,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 180316 conditions, 5993 events. 3052/5993 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 36946 event pairs, 45 based on Foata normal form. 98/4219 useless extension candidates. Maximal degree in co-relation 180201. Up to 4805 conditions per place. [2022-12-12 18:31:59,728 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1460 selfloop transitions, 1513 changer transitions 30/3007 dead transitions. [2022-12-12 18:31:59,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1801 places, 3007 transitions, 222239 flow [2022-12-12 18:31:59,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-12-12 18:31:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2022-12-12 18:31:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 633 transitions. [2022-12-12 18:31:59,730 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2758169934640523 [2022-12-12 18:31:59,730 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1769 predicate places. [2022-12-12 18:31:59,730 INFO L82 GeneralOperation]: Start removeDead. Operand has 1801 places, 3007 transitions, 222239 flow [2022-12-12 18:32:00,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1801 places, 2977 transitions, 220019 flow [2022-12-12 18:32:00,049 INFO L495 AbstractCegarLoop]: Abstraction has has 1801 places, 2977 transitions, 220019 flow [2022-12-12 18:32:00,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 5.111111111111111) internal successors, (230), 45 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:32:00,049 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:00,049 INFO L214 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:00,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-12-12 18:32:00,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-12-12 18:32:00,250 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:32:00,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:00,250 INFO L85 PathProgramCache]: Analyzing trace with hash 2059827690, now seen corresponding path program 11 times [2022-12-12 18:32:00,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:00,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191800292] [2022-12-12 18:32:00,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:00,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:00,864 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:00,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:00,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191800292] [2022-12-12 18:32:00,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191800292] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:32:00,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972537589] [2022-12-12 18:32:00,865 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 18:32:00,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:32:00,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:32:00,868 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:32:00,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-12-12 18:32:00,971 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 20 check-sat command(s) [2022-12-12 18:32:00,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 18:32:00,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 46 conjunts are in the unsatisfiable core [2022-12-12 18:32:00,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:32:01,063 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:01,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 18:32:01,828 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972537589] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 18:32:01,828 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 18:32:01,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 85 [2022-12-12 18:32:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625018458] [2022-12-12 18:32:01,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 18:32:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 87 states [2022-12-12 18:32:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:01,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2022-12-12 18:32:01,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1745, Invalid=5737, Unknown=0, NotChecked=0, Total=7482 [2022-12-12 18:32:01,832 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2022-12-12 18:32:01,833 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1801 places, 2977 transitions, 220019 flow. Second operand has 87 states, 87 states have (on average 5.126436781609195) internal successors, (446), 87 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:32:01,833 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:01,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2022-12-12 18:32:01,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:10,501 INFO L130 PetriNetUnfolder]: 3325/6488 cut-off events. [2022-12-12 18:32:10,501 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 18:32:10,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203080 conditions, 6488 events. 3325/6488 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 40448 event pairs, 45 based on Foata normal form. 147/4451 useless extension candidates. Maximal degree in co-relation 202962. Up to 5276 conditions per place. [2022-12-12 18:32:10,575 INFO L137 encePairwiseOnDemand]: 16/27 looper letters, 1519 selfloop transitions, 1229 changer transitions 312/3064 dead transitions. [2022-12-12 18:32:10,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1888 places, 3064 transitions, 232577 flow [2022-12-12 18:32:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2022-12-12 18:32:10,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2022-12-12 18:32:10,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 687 transitions. [2022-12-12 18:32:10,577 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.28914141414141414 [2022-12-12 18:32:10,577 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1856 predicate places. [2022-12-12 18:32:10,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 1888 places, 3064 transitions, 232577 flow [2022-12-12 18:32:10,779 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1888 places, 2752 transitions, 208865 flow [2022-12-12 18:32:10,780 INFO L495 AbstractCegarLoop]: Abstraction has has 1888 places, 2752 transitions, 208865 flow [2022-12-12 18:32:10,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 87 states, 87 states have (on average 5.126436781609195) internal successors, (446), 87 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:32:10,780 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 18:32:10,780 INFO L214 CegarLoopForPetriNet]: trace histogram [21, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:10,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-12-12 18:32:10,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:32:10,981 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 18:32:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 18:32:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1604024407, now seen corresponding path program 1 times [2022-12-12 18:32:10,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 18:32:10,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294581048] [2022-12-12 18:32:10,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:10,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 18:32:10,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:11,286 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 380 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:11,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 18:32:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294581048] [2022-12-12 18:32:11,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294581048] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 18:32:11,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015962927] [2022-12-12 18:32:11,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 18:32:11,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 18:32:11,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 18:32:11,288 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 18:32:11,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-12-12 18:32:11,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 18:32:11,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 22 conjunts are in the unsatisfiable core [2022-12-12 18:32:11,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 18:32:11,441 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 18:32:11,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 18:32:11,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015962927] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 18:32:11,442 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 18:32:11,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [23] total 24 [2022-12-12 18:32:11,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332986498] [2022-12-12 18:32:11,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 18:32:11,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-12 18:32:11,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 18:32:11,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-12 18:32:11,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=296, Unknown=0, NotChecked=0, Total=552 [2022-12-12 18:32:11,444 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 27 [2022-12-12 18:32:11,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1888 places, 2752 transitions, 208865 flow. Second operand has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:32:11,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 18:32:11,444 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 27 [2022-12-12 18:32:11,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 18:32:58,981 INFO L130 PetriNetUnfolder]: 19029/46107 cut-off events. [2022-12-12 18:32:58,982 INFO L131 PetriNetUnfolder]: For 3112962/3112962 co-relation queries the response was YES. [2022-12-12 18:32:59,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1152548 conditions, 46107 events. 19029/46107 cut-off events. For 3112962/3112962 co-relation queries the response was YES. Maximal size of possible extension queue 1243. Compared 512326 event pairs, 4658 based on Foata normal form. 2324/48422 useless extension candidates. Maximal degree in co-relation 1152427. Up to 28819 conditions per place. [2022-12-12 18:32:59,265 INFO L137 encePairwiseOnDemand]: 21/27 looper letters, 0 selfloop transitions, 0 changer transitions 19293/19293 dead transitions. [2022-12-12 18:32:59,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1903 places, 19293 transitions, 1503215 flow [2022-12-12 18:32:59,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-12 18:32:59,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-12 18:32:59,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 233 transitions. [2022-12-12 18:32:59,267 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3752012882447665 [2022-12-12 18:32:59,267 INFO L295 CegarLoopForPetriNet]: 32 programPoint places, 1871 predicate places. [2022-12-12 18:32:59,267 INFO L82 GeneralOperation]: Start removeDead. Operand has 1903 places, 19293 transitions, 1503215 flow [2022-12-12 18:32:59,367 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 18:32:59,367 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 18:32:59,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.130434782608695) internal successors, (118), 23 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 18:32:59,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 18:32:59,369 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 18:32:59,370 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 18:32:59,375 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-12-12 18:32:59,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-12-12 18:32:59,571 INFO L445 BasicCegarLoop]: Path program histogram: [11, 6, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 18:32:59,573 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 18:32:59,573 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 18:32:59,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 06:32:59 BasicIcfg [2022-12-12 18:32:59,576 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 18:32:59,576 INFO L158 Benchmark]: Toolchain (without parser) took 221165.57ms. Allocated memory was 175.1MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 150.3MB in the beginning and 1.1GB in the end (delta: -974.3MB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2022-12-12 18:32:59,576 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 152.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 18:32:59,576 INFO L158 Benchmark]: CACSL2BoogieTranslator took 504.34ms. Allocated memory is still 175.1MB. Free memory was 150.3MB in the beginning and 130.2MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2022-12-12 18:32:59,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.89ms. Allocated memory is still 175.1MB. Free memory was 130.2MB in the beginning and 128.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 18:32:59,577 INFO L158 Benchmark]: Boogie Preprocessor took 37.09ms. Allocated memory is still 175.1MB. Free memory was 128.3MB in the beginning and 126.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 18:32:59,577 INFO L158 Benchmark]: RCFGBuilder took 355.85ms. Allocated memory is still 175.1MB. Free memory was 126.8MB in the beginning and 114.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 18:32:59,577 INFO L158 Benchmark]: TraceAbstraction took 220214.26ms. Allocated memory was 175.1MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 113.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2022-12-12 18:32:59,578 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 175.1MB. Free memory is still 152.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 504.34ms. Allocated memory is still 175.1MB. Free memory was 150.3MB in the beginning and 130.2MB in the end (delta: 20.1MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 47.89ms. Allocated memory is still 175.1MB. Free memory was 130.2MB in the beginning and 128.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.09ms. Allocated memory is still 175.1MB. Free memory was 128.3MB in the beginning and 126.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 355.85ms. Allocated memory is still 175.1MB. Free memory was 126.8MB in the beginning and 114.2MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 220214.26ms. Allocated memory was 175.1MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 113.1MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.4s, 66 PlacesBefore, 32 PlacesAfterwards, 64 TransitionsBefore, 27 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 18 TrivialYvCompositions, 30 ConcurrentYvCompositions, 3 ChoiceCompositions, 51 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 1025, independent unconditional: 0, dependent: 23, dependent conditional: 23, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1048, independent: 1025, independent conditional: 0, independent unconditional: 1025, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 824, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 824, independent: 814, independent conditional: 0, independent unconditional: 814, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 30, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1048, independent: 211, independent conditional: 0, independent unconditional: 211, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 824, unknown conditional: 0, unknown unconditional: 824] , Statistics on independence cache: Total cache size (in pairs): 1517, Positive cache size: 1507, Positive conditional cache size: 0, Positive unconditional cache size: 1507, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 722]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 2.8s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 220.1s, OverallIterations: 38, TraceHistogramMax: 21, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 164.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18717 SdHoareTripleChecker+Valid, 11.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18717 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7148 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19946 IncrementalHoareTripleChecker+Invalid, 27094 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7148 mSolverCounterUnsat, 0 mSDtfsCounter, 19946 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5323 GetRequests, 1416 SyntacticMatches, 882 SemanticMatches, 3025 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105713 ImplicationChecksByTransitivity, 57.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=220019occurred in iteration=36, InterpolantAutomatonStates: 1917, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 38 MinimizatonAttempts, 1616461 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 39.3s InterpolantComputationTime, 2652 NumberOfCodeBlocks, 2652 NumberOfCodeBlocksAsserted, 262 NumberOfCheckSat, 3805 ConstructedInterpolants, 0 QuantifiedInterpolants, 17782 SizeOfPredicates, 1000 NumberOfNonLiveVariables, 8789 ConjunctsInSsa, 1214 ConjunctsInUnsatCore, 103 InterpolantComputations, 6 PerfectInterpolantSequences, 780/27527 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 18:32:59,596 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 0 Received shutdown request...