/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 14:57:17,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 14:57:17,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 14:57:17,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 14:57:17,361 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 14:57:17,369 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 14:57:17,371 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 14:57:17,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 14:57:17,375 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 14:57:17,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 14:57:17,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 14:57:17,381 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 14:57:17,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 14:57:17,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 14:57:17,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 14:57:17,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 14:57:17,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 14:57:17,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 14:57:17,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 14:57:17,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 14:57:17,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 14:57:17,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 14:57:17,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 14:57:17,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 14:57:17,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 14:57:17,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 14:57:17,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 14:57:17,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 14:57:17,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 14:57:17,406 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 14:57:17,406 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 14:57:17,407 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 14:57:17,408 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 14:57:17,409 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 14:57:17,410 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 14:57:17,410 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 14:57:17,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 14:57:17,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 14:57:17,411 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 14:57:17,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 14:57:17,412 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 14:57:17,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-After.epf [2022-01-19 14:57:17,438 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 14:57:17,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 14:57:17,439 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 14:57:17,440 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 14:57:17,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 14:57:17,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 14:57:17,440 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 14:57:17,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 14:57:17,441 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 14:57:17,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 14:57:17,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 14:57:17,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 14:57:17,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 14:57:17,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:57:17,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 14:57:17,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 14:57:17,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 14:57:17,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 14:57:17,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 14:57:17,444 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=AFTER [2022-01-19 14:57:17,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 14:57:17,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 14:57:17,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 14:57:17,678 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 14:57:17,679 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 14:57:17,680 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 14:57:17,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-19 14:57:17,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/252507ac7/e6921779b2424f96a73bb2e14fe290a2/FLAG0954c691a [2022-01-19 14:57:18,097 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 14:57:18,098 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c [2022-01-19 14:57:18,103 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/252507ac7/e6921779b2424f96a73bb2e14fe290a2/FLAG0954c691a [2022-01-19 14:57:18,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/252507ac7/e6921779b2424f96a73bb2e14fe290a2 [2022-01-19 14:57:18,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 14:57:18,115 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 14:57:18,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 14:57:18,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 14:57:18,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 14:57:18,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,120 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4528fadf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18, skipping insertion in model container [2022-01-19 14:57:18,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 14:57:18,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 14:57:18,333 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-01-19 14:57:18,345 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:57:18,353 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 14:57:18,385 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-send-receive-alt.wvr.c[2650,2663] [2022-01-19 14:57:18,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 14:57:18,399 INFO L208 MainTranslator]: Completed translation [2022-01-19 14:57:18,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18 WrapperNode [2022-01-19 14:57:18,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 14:57:18,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 14:57:18,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 14:57:18,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 14:57:18,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,448 INFO L137 Inliner]: procedures = 24, calls = 37, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 142 [2022-01-19 14:57:18,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 14:57:18,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 14:57:18,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 14:57:18,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 14:57:18,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 14:57:18,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 14:57:18,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 14:57:18,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 14:57:18,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (1/1) ... [2022-01-19 14:57:18,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 14:57:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:57:18,520 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) [2022-01-19 14:57:18,538 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 [2022-01-19 14:57:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 14:57:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 14:57:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 14:57:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 14:57:18,567 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 14:57:18,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 14:57:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 14:57:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 14:57:18,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 14:57:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 14:57:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-01-19 14:57:18,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 14:57:18,570 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 14:57:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 14:57:18,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 14:57:18,571 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-19 14:57:18,687 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 14:57:18,688 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 14:57:18,899 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 14:57:18,946 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 14:57:18,947 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 14:57:18,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:57:18 BoogieIcfgContainer [2022-01-19 14:57:18,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 14:57:18,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 14:57:18,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 14:57:18,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 14:57:18,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 02:57:18" (1/3) ... [2022-01-19 14:57:18,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30953ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:57:18, skipping insertion in model container [2022-01-19 14:57:18,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 02:57:18" (2/3) ... [2022-01-19 14:57:18,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30953ea5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 02:57:18, skipping insertion in model container [2022-01-19 14:57:18,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 02:57:18" (3/3) ... [2022-01-19 14:57:18,955 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-send-receive-alt.wvr.c [2022-01-19 14:57:18,959 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 14:57:18,959 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 14:57:18,959 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 14:57:19,005 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,006 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,007 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,008 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,009 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,009 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,009 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,011 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,012 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,012 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,012 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,013 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,013 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,014 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,015 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,016 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,017 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,018 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,019 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,019 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,020 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,020 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,020 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,020 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,020 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,021 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,021 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,021 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,021 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,022 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,022 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,022 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,022 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,023 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,024 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,025 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,026 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,026 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,030 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,031 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,031 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_~b~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,031 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,031 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,031 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,032 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,033 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,033 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,034 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,034 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,034 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 14:57:19,040 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-01-19 14:57:19,090 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 14:57:19,096 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-01-19 14:57:19,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-19 14:57:19,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 129 places, 133 transitions, 282 flow [2022-01-19 14:57:19,178 INFO L129 PetriNetUnfolder]: 11/131 cut-off events. [2022-01-19 14:57:19,179 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 14:57:19,183 INFO L84 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 131 events. 11/131 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 82 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2022-01-19 14:57:19,183 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 133 transitions, 282 flow [2022-01-19 14:57:19,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 122 transitions, 256 flow [2022-01-19 14:57:19,229 INFO L129 PetriNetUnfolder]: 11/121 cut-off events. [2022-01-19 14:57:19,229 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-01-19 14:57:19,230 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:19,230 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:19,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:19,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:19,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1382683983, now seen corresponding path program 1 times [2022-01-19 14:57:19,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:19,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203746083] [2022-01-19 14:57:19,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:19,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:19,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:19,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:19,451 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:19,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203746083] [2022-01-19 14:57:19,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203746083] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:57:19,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:57:19,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-19 14:57:19,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598985885] [2022-01-19 14:57:19,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:57:19,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-19 14:57:19,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-19 14:57:19,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-19 14:57:19,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 133 [2022-01-19 14:57:19,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 122 transitions, 256 flow. Second operand has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:19,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 133 [2022-01-19 14:57:19,495 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:19,554 INFO L129 PetriNetUnfolder]: 8/122 cut-off events. [2022-01-19 14:57:19,554 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2022-01-19 14:57:19,555 INFO L84 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 122 events. 8/122 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 89 event pairs, 1 based on Foata normal form. 10/122 useless extension candidates. Maximal degree in co-relation 83. Up to 13 conditions per place. [2022-01-19 14:57:19,557 INFO L132 encePairwiseOnDemand]: 126/133 looper letters, 7 selfloop transitions, 0 changer transitions 3/115 dead transitions. [2022-01-19 14:57:19,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 115 transitions, 256 flow [2022-01-19 14:57:19,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-19 14:57:19,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-01-19 14:57:19,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 250 transitions. [2022-01-19 14:57:19,569 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9398496240601504 [2022-01-19 14:57:19,570 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 250 transitions. [2022-01-19 14:57:19,570 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 250 transitions. [2022-01-19 14:57:19,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:19,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 250 transitions. [2022-01-19 14:57:19,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 125.0) internal successors, (250), 2 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,585 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,587 INFO L186 Difference]: Start difference. First operand has 118 places, 122 transitions, 256 flow. Second operand 2 states and 250 transitions. [2022-01-19 14:57:19,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 115 transitions, 256 flow [2022-01-19 14:57:19,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 248 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 14:57:19,594 INFO L242 Difference]: Finished difference. Result has 115 places, 112 transitions, 228 flow [2022-01-19 14:57:19,596 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=228, PETRI_PLACES=115, PETRI_TRANSITIONS=112} [2022-01-19 14:57:19,600 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -3 predicate places. [2022-01-19 14:57:19,600 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 112 transitions, 228 flow [2022-01-19 14:57:19,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 121.5) internal successors, (243), 2 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,601 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:19,601 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:19,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 14:57:19,602 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:19,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:19,602 INFO L85 PathProgramCache]: Analyzing trace with hash 882365775, now seen corresponding path program 1 times [2022-01-19 14:57:19,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:19,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040111254] [2022-01-19 14:57:19,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:19,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:19,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:19,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040111254] [2022-01-19 14:57:19,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040111254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:57:19,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:57:19,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 14:57:19,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926378051] [2022-01-19 14:57:19,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:57:19,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 14:57:19,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 14:57:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-19 14:57:19,764 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 133 [2022-01-19 14:57:19,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 112 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:19,765 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 133 [2022-01-19 14:57:19,765 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:19,865 INFO L129 PetriNetUnfolder]: 13/157 cut-off events. [2022-01-19 14:57:19,866 INFO L130 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-01-19 14:57:19,867 INFO L84 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 157 events. 13/157 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 1 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 199. Up to 19 conditions per place. [2022-01-19 14:57:19,868 INFO L132 encePairwiseOnDemand]: 128/133 looper letters, 23 selfloop transitions, 2 changer transitions 4/121 dead transitions. [2022-01-19 14:57:19,868 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 121 transitions, 307 flow [2022-01-19 14:57:19,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-19 14:57:19,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-01-19 14:57:19,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 540 transitions. [2022-01-19 14:57:19,873 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8120300751879699 [2022-01-19 14:57:19,873 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 540 transitions. [2022-01-19 14:57:19,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 540 transitions. [2022-01-19 14:57:19,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:19,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 540 transitions. [2022-01-19 14:57:19,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.0) internal successors, (540), 5 states have internal predecessors, (540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,879 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 133.0) internal successors, (798), 6 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,879 INFO L186 Difference]: Start difference. First operand has 115 places, 112 transitions, 228 flow. Second operand 5 states and 540 transitions. [2022-01-19 14:57:19,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 121 transitions, 307 flow [2022-01-19 14:57:19,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 121 transitions, 307 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-01-19 14:57:19,883 INFO L242 Difference]: Finished difference. Result has 119 places, 113 transitions, 244 flow [2022-01-19 14:57:19,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=244, PETRI_PLACES=119, PETRI_TRANSITIONS=113} [2022-01-19 14:57:19,885 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-01-19 14:57:19,885 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 113 transitions, 244 flow [2022-01-19 14:57:19,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:19,886 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:19,886 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:19,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-19 14:57:19,886 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:19,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:19,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1024793816, now seen corresponding path program 1 times [2022-01-19 14:57:19,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:19,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869402025] [2022-01-19 14:57:19,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:19,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:20,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:20,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:20,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869402025] [2022-01-19 14:57:20,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869402025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:57:20,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:57:20,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 14:57:20,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411065087] [2022-01-19 14:57:20,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:57:20,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 14:57:20,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:20,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 14:57:20,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 14:57:20,099 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 133 [2022-01-19 14:57:20,100 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 113 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,100 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:20,100 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 133 [2022-01-19 14:57:20,100 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:20,142 INFO L129 PetriNetUnfolder]: 18/188 cut-off events. [2022-01-19 14:57:20,143 INFO L130 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2022-01-19 14:57:20,159 INFO L84 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 188 events. 18/188 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 350 event pairs, 3 based on Foata normal form. 3/175 useless extension candidates. Maximal degree in co-relation 240. Up to 30 conditions per place. [2022-01-19 14:57:20,160 INFO L132 encePairwiseOnDemand]: 127/133 looper letters, 14 selfloop transitions, 5 changer transitions 2/118 dead transitions. [2022-01-19 14:57:20,160 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 118 transitions, 298 flow [2022-01-19 14:57:20,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 14:57:20,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 14:57:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2022-01-19 14:57:20,162 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8796992481203008 [2022-01-19 14:57:20,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2022-01-19 14:57:20,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2022-01-19 14:57:20,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:20,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2022-01-19 14:57:20,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,166 INFO L186 Difference]: Start difference. First operand has 119 places, 113 transitions, 244 flow. Second operand 3 states and 351 transitions. [2022-01-19 14:57:20,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 118 transitions, 298 flow [2022-01-19 14:57:20,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 292 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-01-19 14:57:20,169 INFO L242 Difference]: Finished difference. Result has 117 places, 115 transitions, 263 flow [2022-01-19 14:57:20,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=263, PETRI_PLACES=117, PETRI_TRANSITIONS=115} [2022-01-19 14:57:20,170 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, -1 predicate places. [2022-01-19 14:57:20,170 INFO L470 AbstractCegarLoop]: Abstraction has has 117 places, 115 transitions, 263 flow [2022-01-19 14:57:20,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:20,171 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:20,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 14:57:20,171 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:20,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:20,172 INFO L85 PathProgramCache]: Analyzing trace with hash 315089418, now seen corresponding path program 1 times [2022-01-19 14:57:20,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:20,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248308806] [2022-01-19 14:57:20,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:20,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:20,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:20,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:20,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248308806] [2022-01-19 14:57:20,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248308806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:57:20,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:57:20,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-19 14:57:20,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239911412] [2022-01-19 14:57:20,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:57:20,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-19 14:57:20,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:20,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-19 14:57:20,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-19 14:57:20,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 133 [2022-01-19 14:57:20,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 115 transitions, 263 flow. Second operand has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:20,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 133 [2022-01-19 14:57:20,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:20,300 INFO L129 PetriNetUnfolder]: 29/229 cut-off events. [2022-01-19 14:57:20,300 INFO L130 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2022-01-19 14:57:20,301 INFO L84 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 229 events. 29/229 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 673 event pairs, 7 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 322. Up to 46 conditions per place. [2022-01-19 14:57:20,301 INFO L132 encePairwiseOnDemand]: 130/133 looper letters, 16 selfloop transitions, 2 changer transitions 1/120 dead transitions. [2022-01-19 14:57:20,301 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 120 transitions, 316 flow [2022-01-19 14:57:20,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-19 14:57:20,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-01-19 14:57:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2022-01-19 14:57:20,303 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9022556390977443 [2022-01-19 14:57:20,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2022-01-19 14:57:20,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2022-01-19 14:57:20,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:20,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2022-01-19 14:57:20,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,306 INFO L186 Difference]: Start difference. First operand has 117 places, 115 transitions, 263 flow. Second operand 3 states and 360 transitions. [2022-01-19 14:57:20,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 120 transitions, 316 flow [2022-01-19 14:57:20,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 120 transitions, 312 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:57:20,309 INFO L242 Difference]: Finished difference. Result has 119 places, 115 transitions, 266 flow [2022-01-19 14:57:20,309 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2022-01-19 14:57:20,310 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 1 predicate places. [2022-01-19 14:57:20,310 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 266 flow [2022-01-19 14:57:20,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,310 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:20,311 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:20,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 14:57:20,311 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash -93519548, now seen corresponding path program 1 times [2022-01-19 14:57:20,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:20,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088083806] [2022-01-19 14:57:20,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:20,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:20,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:20,433 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:20,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:20,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088083806] [2022-01-19 14:57:20,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088083806] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:57:20,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:57:20,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-19 14:57:20,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733375232] [2022-01-19 14:57:20,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:57:20,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-19 14:57:20,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:20,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-19 14:57:20,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-19 14:57:20,436 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 133 [2022-01-19 14:57:20,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,438 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:20,438 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 133 [2022-01-19 14:57:20,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:20,548 INFO L129 PetriNetUnfolder]: 24/281 cut-off events. [2022-01-19 14:57:20,548 INFO L130 PetriNetUnfolder]: For 50/54 co-relation queries the response was YES. [2022-01-19 14:57:20,549 INFO L84 FinitePrefix]: Finished finitePrefix Result has 405 conditions, 281 events. 24/281 cut-off events. For 50/54 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 878 event pairs, 12 based on Foata normal form. 3/266 useless extension candidates. Maximal degree in co-relation 398. Up to 45 conditions per place. [2022-01-19 14:57:20,550 INFO L132 encePairwiseOnDemand]: 125/133 looper letters, 22 selfloop transitions, 6 changer transitions 9/128 dead transitions. [2022-01-19 14:57:20,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 128 transitions, 376 flow [2022-01-19 14:57:20,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-19 14:57:20,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-01-19 14:57:20,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 756 transitions. [2022-01-19 14:57:20,555 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8120300751879699 [2022-01-19 14:57:20,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 756 transitions. [2022-01-19 14:57:20,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 756 transitions. [2022-01-19 14:57:20,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:20,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 756 transitions. [2022-01-19 14:57:20,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.0) internal successors, (756), 7 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,565 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 133.0) internal successors, (1064), 8 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,565 INFO L186 Difference]: Start difference. First operand has 119 places, 115 transitions, 266 flow. Second operand 7 states and 756 transitions. [2022-01-19 14:57:20,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 128 transitions, 376 flow [2022-01-19 14:57:20,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 128 transitions, 374 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-01-19 14:57:20,571 INFO L242 Difference]: Finished difference. Result has 126 places, 116 transitions, 286 flow [2022-01-19 14:57:20,571 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=286, PETRI_PLACES=126, PETRI_TRANSITIONS=116} [2022-01-19 14:57:20,573 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 8 predicate places. [2022-01-19 14:57:20,574 INFO L470 AbstractCegarLoop]: Abstraction has has 126 places, 116 transitions, 286 flow [2022-01-19 14:57:20,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.83333333333333) internal successors, (635), 6 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:20,574 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:20,575 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:20,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 14:57:20,575 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:20,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1414783415, now seen corresponding path program 1 times [2022-01-19 14:57:20,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:20,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469265074] [2022-01-19 14:57:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:20,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:20,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:20,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:57:20,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:20,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469265074] [2022-01-19 14:57:20,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469265074] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:57:20,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837245023] [2022-01-19 14:57:20,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:20,844 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:20,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:57:20,853 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) [2022-01-19 14:57:20,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-19 14:57:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:20,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 60 conjunts are in the unsatisfiable core [2022-01-19 14:57:20,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:57:21,087 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:21,685 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 14:57:21,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 14:57:21,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:57:22,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:22,344 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:22,555 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 7 [2022-01-19 14:57:22,627 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:22,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:57:23,916 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:57:23,917 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 72 [2022-01-19 14:57:23,929 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:57:23,929 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 494 treesize of output 462 [2022-01-19 14:57:23,943 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:57:23,943 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 446 treesize of output 390 [2022-01-19 14:57:23,956 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:57:23,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 374 treesize of output 354 [2022-01-19 14:57:25,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 14:57:25,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:25,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837245023] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:57:25,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:57:25,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 25] total 51 [2022-01-19 14:57:25,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596880578] [2022-01-19 14:57:25,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:57:25,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-19 14:57:25,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:25,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-19 14:57:25,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=612, Invalid=1882, Unknown=56, NotChecked=0, Total=2550 [2022-01-19 14:57:25,647 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 133 [2022-01-19 14:57:25,650 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 116 transitions, 286 flow. Second operand has 51 states, 51 states have (on average 61.80392156862745) internal successors, (3152), 51 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:25,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:25,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 133 [2022-01-19 14:57:25,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:27,547 INFO L129 PetriNetUnfolder]: 167/936 cut-off events. [2022-01-19 14:57:27,547 INFO L130 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2022-01-19 14:57:27,550 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1525 conditions, 936 events. 167/936 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5964 event pairs, 14 based on Foata normal form. 4/866 useless extension candidates. Maximal degree in co-relation 1516. Up to 86 conditions per place. [2022-01-19 14:57:27,553 INFO L132 encePairwiseOnDemand]: 101/133 looper letters, 88 selfloop transitions, 39 changer transitions 34/215 dead transitions. [2022-01-19 14:57:27,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 215 transitions, 886 flow [2022-01-19 14:57:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-19 14:57:27,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-01-19 14:57:27,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2702 transitions. [2022-01-19 14:57:27,560 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4724602203182375 [2022-01-19 14:57:27,560 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2702 transitions. [2022-01-19 14:57:27,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2702 transitions. [2022-01-19 14:57:27,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:27,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2702 transitions. [2022-01-19 14:57:27,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 62.83720930232558) internal successors, (2702), 43 states have internal predecessors, (2702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:27,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 133.0) internal successors, (5852), 44 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:27,576 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 133.0) internal successors, (5852), 44 states have internal predecessors, (5852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:27,576 INFO L186 Difference]: Start difference. First operand has 126 places, 116 transitions, 286 flow. Second operand 43 states and 2702 transitions. [2022-01-19 14:57:27,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 215 transitions, 886 flow [2022-01-19 14:57:27,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 215 transitions, 872 flow, removed 2 selfloop flow, removed 5 redundant places. [2022-01-19 14:57:27,582 INFO L242 Difference]: Finished difference. Result has 183 places, 136 transitions, 505 flow [2022-01-19 14:57:27,582 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=505, PETRI_PLACES=183, PETRI_TRANSITIONS=136} [2022-01-19 14:57:27,582 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 65 predicate places. [2022-01-19 14:57:27,583 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 136 transitions, 505 flow [2022-01-19 14:57:27,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 61.80392156862745) internal successors, (3152), 51 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:27,584 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:27,584 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:27,602 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-19 14:57:27,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-19 14:57:27,791 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash 400817075, now seen corresponding path program 2 times [2022-01-19 14:57:27,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:27,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519690178] [2022-01-19 14:57:27,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:27,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 14:57:27,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:27,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519690178] [2022-01-19 14:57:27,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519690178] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:57:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688391986] [2022-01-19 14:57:27,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 14:57:27,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:27,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:57:27,877 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) [2022-01-19 14:57:27,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-19 14:57:27,963 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:57:27,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:57:27,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-19 14:57:27,969 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:57:28,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:57:28,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:57:28,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:57:28,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [688391986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:57:28,509 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:57:28,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 6] total 9 [2022-01-19 14:57:28,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559302599] [2022-01-19 14:57:28,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:57:28,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-19 14:57:28,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:28,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-19 14:57:28,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2022-01-19 14:57:28,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 133 [2022-01-19 14:57:28,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 136 transitions, 505 flow. Second operand has 9 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:28,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:28,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 133 [2022-01-19 14:57:28,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:28,694 INFO L129 PetriNetUnfolder]: 153/1198 cut-off events. [2022-01-19 14:57:28,694 INFO L130 PetriNetUnfolder]: For 1072/1080 co-relation queries the response was YES. [2022-01-19 14:57:28,699 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2176 conditions, 1198 events. 153/1198 cut-off events. For 1072/1080 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 8170 event pairs, 20 based on Foata normal form. 10/1108 useless extension candidates. Maximal degree in co-relation 2147. Up to 122 conditions per place. [2022-01-19 14:57:28,702 INFO L132 encePairwiseOnDemand]: 127/133 looper letters, 29 selfloop transitions, 30 changer transitions 0/170 dead transitions. [2022-01-19 14:57:28,702 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 170 transitions, 841 flow [2022-01-19 14:57:28,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 14:57:28,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 14:57:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2022-01-19 14:57:28,704 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8872180451127819 [2022-01-19 14:57:28,705 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2022-01-19 14:57:28,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2022-01-19 14:57:28,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:28,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2022-01-19 14:57:28,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:28,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:28,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 133.0) internal successors, (931), 7 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:28,708 INFO L186 Difference]: Start difference. First operand has 183 places, 136 transitions, 505 flow. Second operand 6 states and 708 transitions. [2022-01-19 14:57:28,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 170 transitions, 841 flow [2022-01-19 14:57:28,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 170 transitions, 735 flow, removed 31 selfloop flow, removed 26 redundant places. [2022-01-19 14:57:28,715 INFO L242 Difference]: Finished difference. Result has 156 places, 161 transitions, 724 flow [2022-01-19 14:57:28,715 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=156, PETRI_TRANSITIONS=161} [2022-01-19 14:57:28,716 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 38 predicate places. [2022-01-19 14:57:28,716 INFO L470 AbstractCegarLoop]: Abstraction has has 156 places, 161 transitions, 724 flow [2022-01-19 14:57:28,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 115.55555555555556) internal successors, (1040), 9 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:28,717 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:28,717 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:28,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-19 14:57:28,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-01-19 14:57:28,931 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:28,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1811797277, now seen corresponding path program 3 times [2022-01-19 14:57:28,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:28,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199148002] [2022-01-19 14:57:28,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:28,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-19 14:57:29,009 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:29,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199148002] [2022-01-19 14:57:29,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199148002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 14:57:29,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 14:57:29,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-19 14:57:29,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200928552] [2022-01-19 14:57:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 14:57:29,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-19 14:57:29,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:29,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-19 14:57:29,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-19 14:57:29,012 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 133 [2022-01-19 14:57:29,012 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 161 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:29,012 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:29,012 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 133 [2022-01-19 14:57:29,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:29,266 INFO L129 PetriNetUnfolder]: 213/1816 cut-off events. [2022-01-19 14:57:29,267 INFO L130 PetriNetUnfolder]: For 1476/1476 co-relation queries the response was YES. [2022-01-19 14:57:29,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3202 conditions, 1816 events. 213/1816 cut-off events. For 1476/1476 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 15080 event pairs, 43 based on Foata normal form. 69/1719 useless extension candidates. Maximal degree in co-relation 3178. Up to 244 conditions per place. [2022-01-19 14:57:29,277 INFO L132 encePairwiseOnDemand]: 129/133 looper letters, 67 selfloop transitions, 4 changer transitions 1/183 dead transitions. [2022-01-19 14:57:29,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 183 transitions, 1049 flow [2022-01-19 14:57:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-19 14:57:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-01-19 14:57:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2022-01-19 14:57:29,279 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8909774436090225 [2022-01-19 14:57:29,279 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2022-01-19 14:57:29,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2022-01-19 14:57:29,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:29,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2022-01-19 14:57:29,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:29,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:29,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 133.0) internal successors, (665), 5 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:29,282 INFO L186 Difference]: Start difference. First operand has 156 places, 161 transitions, 724 flow. Second operand 4 states and 474 transitions. [2022-01-19 14:57:29,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 183 transitions, 1049 flow [2022-01-19 14:57:29,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 183 transitions, 1003 flow, removed 22 selfloop flow, removed 1 redundant places. [2022-01-19 14:57:29,289 INFO L242 Difference]: Finished difference. Result has 160 places, 159 transitions, 685 flow [2022-01-19 14:57:29,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=662, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=685, PETRI_PLACES=160, PETRI_TRANSITIONS=159} [2022-01-19 14:57:29,290 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 42 predicate places. [2022-01-19 14:57:29,290 INFO L470 AbstractCegarLoop]: Abstraction has has 160 places, 159 transitions, 685 flow [2022-01-19 14:57:29,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 117.25) internal successors, (469), 4 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:29,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:29,291 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:29,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-19 14:57:29,291 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:29,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:29,291 INFO L85 PathProgramCache]: Analyzing trace with hash -193834779, now seen corresponding path program 1 times [2022-01-19 14:57:29,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:29,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886094420] [2022-01-19 14:57:29,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:29,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:30,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:30,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886094420] [2022-01-19 14:57:30,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886094420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:57:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655855287] [2022-01-19 14:57:30,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:30,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:30,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:57:30,354 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) [2022-01-19 14:57:30,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-19 14:57:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:30,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 59 conjunts are in the unsatisfiable core [2022-01-19 14:57:30,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:57:32,123 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 14:57:32,123 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 49 treesize of output 22 [2022-01-19 14:57:32,158 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:32,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:57:32,732 INFO L353 Elim1Store]: treesize reduction 59, result has 41.0 percent of original size [2022-01-19 14:57:32,732 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 66 [2022-01-19 14:57:35,771 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:35,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655855287] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:57:35,771 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:57:35,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 61 [2022-01-19 14:57:35,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560131127] [2022-01-19 14:57:35,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:57:35,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-19 14:57:35,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:35,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-19 14:57:35,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=474, Invalid=3186, Unknown=0, NotChecked=0, Total=3660 [2022-01-19 14:57:35,778 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2022-01-19 14:57:35,782 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 159 transitions, 685 flow. Second operand has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:35,782 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:35,782 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2022-01-19 14:57:35,782 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:41,202 INFO L129 PetriNetUnfolder]: 1759/7006 cut-off events. [2022-01-19 14:57:41,203 INFO L130 PetriNetUnfolder]: For 7009/7015 co-relation queries the response was YES. [2022-01-19 14:57:41,315 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14570 conditions, 7006 events. 1759/7006 cut-off events. For 7009/7015 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 71937 event pairs, 399 based on Foata normal form. 10/6342 useless extension candidates. Maximal degree in co-relation 14543. Up to 1909 conditions per place. [2022-01-19 14:57:41,332 INFO L132 encePairwiseOnDemand]: 95/133 looper letters, 148 selfloop transitions, 128 changer transitions 160/493 dead transitions. [2022-01-19 14:57:41,332 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 493 transitions, 3064 flow [2022-01-19 14:57:41,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-01-19 14:57:41,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2022-01-19 14:57:41,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 5559 transitions. [2022-01-19 14:57:41,344 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5224624060150376 [2022-01-19 14:57:41,344 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 5559 transitions. [2022-01-19 14:57:41,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 5559 transitions. [2022-01-19 14:57:41,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:41,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 5559 transitions. [2022-01-19 14:57:41,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 69.4875) internal successors, (5559), 80 states have internal predecessors, (5559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:41,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 133.0) internal successors, (10773), 81 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:41,375 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 133.0) internal successors, (10773), 81 states have internal predecessors, (10773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:41,375 INFO L186 Difference]: Start difference. First operand has 160 places, 159 transitions, 685 flow. Second operand 80 states and 5559 transitions. [2022-01-19 14:57:41,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 493 transitions, 3064 flow [2022-01-19 14:57:41,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 493 transitions, 3037 flow, removed 13 selfloop flow, removed 1 redundant places. [2022-01-19 14:57:41,403 INFO L242 Difference]: Finished difference. Result has 278 places, 256 transitions, 1908 flow [2022-01-19 14:57:41,404 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=1908, PETRI_PLACES=278, PETRI_TRANSITIONS=256} [2022-01-19 14:57:41,404 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 160 predicate places. [2022-01-19 14:57:41,405 INFO L470 AbstractCegarLoop]: Abstraction has has 278 places, 256 transitions, 1908 flow [2022-01-19 14:57:41,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:41,406 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:41,407 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:41,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-19 14:57:41,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:41,620 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1730009969, now seen corresponding path program 2 times [2022-01-19 14:57:41,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:41,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525859877] [2022-01-19 14:57:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:41,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:41,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-19 14:57:41,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525859877] [2022-01-19 14:57:41,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525859877] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:57:41,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [240962519] [2022-01-19 14:57:41,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 14:57:41,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:41,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:57:41,874 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) [2022-01-19 14:57:41,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-19 14:57:41,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:57:41,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:57:41,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 80 conjunts are in the unsatisfiable core [2022-01-19 14:57:41,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:57:42,003 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:42,389 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 14:57:42,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-01-19 14:57:42,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:57:42,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:43,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:43,419 INFO L353 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2022-01-19 14:57:43,419 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 14 [2022-01-19 14:57:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:43,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:57:45,082 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 14:57:45,082 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 185 treesize of output 125 [2022-01-19 14:57:45,107 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-19 14:57:45,108 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 384 treesize of output 371 [2022-01-19 14:57:45,140 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-19 14:57:45,140 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 293 [2022-01-19 14:57:45,166 INFO L353 Elim1Store]: treesize reduction 64, result has 37.9 percent of original size [2022-01-19 14:57:45,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 254 [2022-01-19 14:57:48,298 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-01-19 14:57:48,331 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:48,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [240962519] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:57:48,332 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:57:48,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 30, 28] total 58 [2022-01-19 14:57:48,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101343500] [2022-01-19 14:57:48,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:57:48,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-01-19 14:57:48,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:57:48,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-01-19 14:57:48,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=744, Invalid=2492, Unknown=70, NotChecked=0, Total=3306 [2022-01-19 14:57:48,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 133 [2022-01-19 14:57:48,340 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 256 transitions, 1908 flow. Second operand has 58 states, 58 states have (on average 61.793103448275865) internal successors, (3584), 58 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:48,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:57:48,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 133 [2022-01-19 14:57:48,341 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:57:53,995 INFO L129 PetriNetUnfolder]: 1717/9759 cut-off events. [2022-01-19 14:57:53,995 INFO L130 PetriNetUnfolder]: For 94789/95089 co-relation queries the response was YES. [2022-01-19 14:57:54,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40073 conditions, 9759 events. 1717/9759 cut-off events. For 94789/95089 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 112745 event pairs, 207 based on Foata normal form. 166/9370 useless extension candidates. Maximal degree in co-relation 40006. Up to 1762 conditions per place. [2022-01-19 14:57:54,095 INFO L132 encePairwiseOnDemand]: 101/133 looper letters, 214 selfloop transitions, 189 changer transitions 88/552 dead transitions. [2022-01-19 14:57:54,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 552 transitions, 6590 flow [2022-01-19 14:57:54,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-19 14:57:54,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-01-19 14:57:54,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4854 transitions. [2022-01-19 14:57:54,102 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.47397715066887997 [2022-01-19 14:57:54,102 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4854 transitions. [2022-01-19 14:57:54,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4854 transitions. [2022-01-19 14:57:54,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:57:54,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4854 transitions. [2022-01-19 14:57:54,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 63.03896103896104) internal successors, (4854), 77 states have internal predecessors, (4854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:54,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:54,123 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:54,123 INFO L186 Difference]: Start difference. First operand has 278 places, 256 transitions, 1908 flow. Second operand 77 states and 4854 transitions. [2022-01-19 14:57:54,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 552 transitions, 6590 flow [2022-01-19 14:57:54,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 552 transitions, 5510 flow, removed 514 selfloop flow, removed 38 redundant places. [2022-01-19 14:57:54,317 INFO L242 Difference]: Finished difference. Result has 333 places, 357 transitions, 3406 flow [2022-01-19 14:57:54,318 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1660, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=3406, PETRI_PLACES=333, PETRI_TRANSITIONS=357} [2022-01-19 14:57:54,318 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 215 predicate places. [2022-01-19 14:57:54,318 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 357 transitions, 3406 flow [2022-01-19 14:57:54,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 61.793103448275865) internal successors, (3584), 58 states have internal predecessors, (3584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:57:54,320 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:57:54,320 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:57:54,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-19 14:57:54,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:54,554 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:57:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:57:54,554 INFO L85 PathProgramCache]: Analyzing trace with hash 221263351, now seen corresponding path program 3 times [2022-01-19 14:57:54,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:57:54,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529623323] [2022-01-19 14:57:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:57:54,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:57:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:57:55,871 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:55,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:57:55,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529623323] [2022-01-19 14:57:55,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529623323] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:57:55,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1133418354] [2022-01-19 14:57:55,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 14:57:55,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:57:55,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:57:55,873 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) [2022-01-19 14:57:55,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-19 14:57:56,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 14:57:56,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:57:56,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 66 conjunts are in the unsatisfiable core [2022-01-19 14:57:56,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:57:56,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:57:56,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:57:57,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:57,081 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:57:57,936 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-19 14:57:57,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 17 [2022-01-19 14:57:57,968 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:57:57,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:58:03,584 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-19 14:58:03,584 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 226 treesize of output 145 [2022-01-19 14:58:03,646 INFO L353 Elim1Store]: treesize reduction 62, result has 62.4 percent of original size [2022-01-19 14:58:03,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 821 treesize of output 815 [2022-01-19 14:58:03,686 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 14:58:03,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 700 treesize of output 676 [2022-01-19 14:58:03,733 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 14:58:03,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 624 treesize of output 524 [2022-01-19 14:58:23,171 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:58:23,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1133418354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:58:23,171 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:58:23,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 32, 30] total 80 [2022-01-19 14:58:23,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841460627] [2022-01-19 14:58:23,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:58:23,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-01-19 14:58:23,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:58:23,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-01-19 14:58:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=536, Invalid=5725, Unknown=59, NotChecked=0, Total=6320 [2022-01-19 14:58:23,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-01-19 14:58:23,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 357 transitions, 3406 flow. Second operand has 80 states, 80 states have (on average 60.225) internal successors, (4818), 80 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:23,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:58:23,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-01-19 14:58:23,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:58:36,116 INFO L129 PetriNetUnfolder]: 4599/16892 cut-off events. [2022-01-19 14:58:36,116 INFO L130 PetriNetUnfolder]: For 132656/132808 co-relation queries the response was YES. [2022-01-19 14:58:36,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 68852 conditions, 16892 events. 4599/16892 cut-off events. For 132656/132808 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 198497 event pairs, 751 based on Foata normal form. 62/16100 useless extension candidates. Maximal degree in co-relation 68763. Up to 3665 conditions per place. [2022-01-19 14:58:36,437 INFO L132 encePairwiseOnDemand]: 99/133 looper letters, 281 selfloop transitions, 324 changer transitions 109/768 dead transitions. [2022-01-19 14:58:36,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 768 transitions, 9567 flow [2022-01-19 14:58:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-01-19 14:58:36,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-01-19 14:58:36,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 4986 transitions. [2022-01-19 14:58:36,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4745407823355858 [2022-01-19 14:58:36,445 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 4986 transitions. [2022-01-19 14:58:36,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 4986 transitions. [2022-01-19 14:58:36,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:58:36,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 4986 transitions. [2022-01-19 14:58:36,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 63.11392405063291) internal successors, (4986), 79 states have internal predecessors, (4986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:36,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 133.0) internal successors, (10640), 80 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:36,468 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 133.0) internal successors, (10640), 80 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:36,468 INFO L186 Difference]: Start difference. First operand has 333 places, 357 transitions, 3406 flow. Second operand 79 states and 4986 transitions. [2022-01-19 14:58:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 768 transitions, 9567 flow [2022-01-19 14:58:36,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 768 transitions, 8946 flow, removed 271 selfloop flow, removed 55 redundant places. [2022-01-19 14:58:36,815 INFO L242 Difference]: Finished difference. Result has 377 places, 504 transitions, 6215 flow [2022-01-19 14:58:36,816 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3081, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=357, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=6215, PETRI_PLACES=377, PETRI_TRANSITIONS=504} [2022-01-19 14:58:36,816 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 259 predicate places. [2022-01-19 14:58:36,816 INFO L470 AbstractCegarLoop]: Abstraction has has 377 places, 504 transitions, 6215 flow [2022-01-19 14:58:36,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 80 states have (on average 60.225) internal successors, (4818), 80 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:36,817 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:58:36,818 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:58:36,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-01-19 14:58:37,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-19 14:58:37,019 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:58:37,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:58:37,019 INFO L85 PathProgramCache]: Analyzing trace with hash 1950530351, now seen corresponding path program 4 times [2022-01-19 14:58:37,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:58:37,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360796682] [2022-01-19 14:58:37,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:58:37,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:58:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:58:37,833 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:58:37,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:58:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360796682] [2022-01-19 14:58:37,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360796682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:58:37,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [302740305] [2022-01-19 14:58:37,834 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 14:58:37,834 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:58:37,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:58:37,835 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) [2022-01-19 14:58:37,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-19 14:58:37,905 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 14:58:37,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:58:37,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 58 conjunts are in the unsatisfiable core [2022-01-19 14:58:37,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:58:39,414 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 14:58:39,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 20 [2022-01-19 14:58:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:58:39,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:58:39,990 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 14:58:39,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-01-19 14:58:42,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:58:42,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [302740305] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:58:42,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:58:42,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 24, 23] total 61 [2022-01-19 14:58:42,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758535846] [2022-01-19 14:58:42,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:58:42,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-01-19 14:58:42,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:58:42,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-01-19 14:58:42,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=503, Invalid=3157, Unknown=0, NotChecked=0, Total=3660 [2022-01-19 14:58:42,287 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2022-01-19 14:58:42,290 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 504 transitions, 6215 flow. Second operand has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:42,290 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:58:42,290 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2022-01-19 14:58:42,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:58:50,135 INFO L129 PetriNetUnfolder]: 4729/18999 cut-off events. [2022-01-19 14:58:50,135 INFO L130 PetriNetUnfolder]: For 362668/362953 co-relation queries the response was YES. [2022-01-19 14:58:50,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 102617 conditions, 18999 events. 4729/18999 cut-off events. For 362668/362953 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 233251 event pairs, 2121 based on Foata normal form. 63/17796 useless extension candidates. Maximal degree in co-relation 102508. Up to 8646 conditions per place. [2022-01-19 14:58:50,361 INFO L132 encePairwiseOnDemand]: 96/133 looper letters, 419 selfloop transitions, 113 changer transitions 60/649 dead transitions. [2022-01-19 14:58:50,361 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 649 transitions, 9589 flow [2022-01-19 14:58:50,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-19 14:58:50,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2022-01-19 14:58:50,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 3863 transitions. [2022-01-19 14:58:50,366 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5186627282491945 [2022-01-19 14:58:50,366 INFO L72 ComplementDD]: Start complementDD. Operand 56 states and 3863 transitions. [2022-01-19 14:58:50,366 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 3863 transitions. [2022-01-19 14:58:50,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:58:50,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 56 states and 3863 transitions. [2022-01-19 14:58:50,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 57 states, 56 states have (on average 68.98214285714286) internal successors, (3863), 56 states have internal predecessors, (3863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:50,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 57 states, 57 states have (on average 133.0) internal successors, (7581), 57 states have internal predecessors, (7581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:50,380 INFO L81 ComplementDD]: Finished complementDD. Result has 57 states, 57 states have (on average 133.0) internal successors, (7581), 57 states have internal predecessors, (7581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:50,380 INFO L186 Difference]: Start difference. First operand has 377 places, 504 transitions, 6215 flow. Second operand 56 states and 3863 transitions. [2022-01-19 14:58:50,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 649 transitions, 9589 flow [2022-01-19 14:58:51,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 649 transitions, 8983 flow, removed 271 selfloop flow, removed 40 redundant places. [2022-01-19 14:58:51,167 INFO L242 Difference]: Finished difference. Result has 399 places, 550 transitions, 6974 flow [2022-01-19 14:58:51,168 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=5833, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=407, PETRI_DIFFERENCE_SUBTRAHEND_STATES=56, PETRI_FLOW=6974, PETRI_PLACES=399, PETRI_TRANSITIONS=550} [2022-01-19 14:58:51,169 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 281 predicate places. [2022-01-19 14:58:51,169 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 550 transitions, 6974 flow [2022-01-19 14:58:51,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 61 states have (on average 67.75409836065573) internal successors, (4133), 61 states have internal predecessors, (4133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:58:51,170 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:58:51,170 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:58:51,194 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-19 14:58:51,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:58:51,379 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:58:51,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:58:51,380 INFO L85 PathProgramCache]: Analyzing trace with hash -40178739, now seen corresponding path program 5 times [2022-01-19 14:58:51,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:58:51,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785932016] [2022-01-19 14:58:51,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:58:51,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:58:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:58:52,076 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:58:52,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:58:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785932016] [2022-01-19 14:58:52,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785932016] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:58:52,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363343648] [2022-01-19 14:58:52,076 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 14:58:52,077 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:58:52,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:58:52,078 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) [2022-01-19 14:58:52,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-19 14:58:52,158 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 14:58:52,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:58:52,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 69 conjunts are in the unsatisfiable core [2022-01-19 14:58:52,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:58:52,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:58:52,755 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 14:58:53,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:58:53,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 14:58:53,708 INFO L353 Elim1Store]: treesize reduction 99, result has 6.6 percent of original size [2022-01-19 14:58:53,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 51 treesize of output 22 [2022-01-19 14:58:53,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:58:53,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:58:56,493 INFO L353 Elim1Store]: treesize reduction 28, result has 54.8 percent of original size [2022-01-19 14:58:56,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 227 treesize of output 146 [2022-01-19 14:58:56,576 INFO L353 Elim1Store]: treesize reduction 64, result has 62.1 percent of original size [2022-01-19 14:58:56,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 405 treesize of output 450 [2022-01-19 14:58:56,627 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 14:58:56,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 333 treesize of output 307 [2022-01-19 14:58:56,676 INFO L353 Elim1Store]: treesize reduction 50, result has 51.5 percent of original size [2022-01-19 14:58:56,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 255 treesize of output 268 [2022-01-19 14:59:02,467 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:59:02,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363343648] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:59:02,468 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:59:02,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 27] total 73 [2022-01-19 14:59:02,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285999911] [2022-01-19 14:59:02,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:59:02,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-01-19 14:59:02,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:02,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-01-19 14:59:02,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=796, Invalid=4374, Unknown=86, NotChecked=0, Total=5256 [2022-01-19 14:59:02,473 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-01-19 14:59:02,494 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 550 transitions, 6974 flow. Second operand has 73 states, 73 states have (on average 60.49315068493151) internal successors, (4416), 73 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:02,494 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:02,494 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-01-19 14:59:02,494 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:21,783 INFO L129 PetriNetUnfolder]: 8115/29706 cut-off events. [2022-01-19 14:59:21,783 INFO L130 PetriNetUnfolder]: For 976291/976578 co-relation queries the response was YES. [2022-01-19 14:59:22,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 203092 conditions, 29706 events. 8115/29706 cut-off events. For 976291/976578 co-relation queries the response was YES. Maximal size of possible extension queue 937. Compared 383791 event pairs, 1246 based on Foata normal form. 199/28376 useless extension candidates. Maximal degree in co-relation 202975. Up to 6677 conditions per place. [2022-01-19 14:59:22,437 INFO L132 encePairwiseOnDemand]: 99/133 looper letters, 454 selfloop transitions, 684 changer transitions 240/1432 dead transitions. [2022-01-19 14:59:22,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 1432 transitions, 27090 flow [2022-01-19 14:59:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-19 14:59:22,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2022-01-19 14:59:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 8831 transitions. [2022-01-19 14:59:22,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4776870233136799 [2022-01-19 14:59:22,448 INFO L72 ComplementDD]: Start complementDD. Operand 139 states and 8831 transitions. [2022-01-19 14:59:22,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 139 states and 8831 transitions. [2022-01-19 14:59:22,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:22,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 139 states and 8831 transitions. [2022-01-19 14:59:22,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 140 states, 139 states have (on average 63.53237410071942) internal successors, (8831), 139 states have internal predecessors, (8831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:22,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 140 states, 140 states have (on average 133.0) internal successors, (18620), 140 states have internal predecessors, (18620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:22,485 INFO L81 ComplementDD]: Finished complementDD. Result has 140 states, 140 states have (on average 133.0) internal successors, (18620), 140 states have internal predecessors, (18620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:22,485 INFO L186 Difference]: Start difference. First operand has 399 places, 550 transitions, 6974 flow. Second operand 139 states and 8831 transitions. [2022-01-19 14:59:22,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 529 places, 1432 transitions, 27090 flow [2022-01-19 14:59:25,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 492 places, 1432 transitions, 26068 flow, removed 469 selfloop flow, removed 37 redundant places. [2022-01-19 14:59:25,495 INFO L242 Difference]: Finished difference. Result has 562 places, 895 transitions, 14546 flow [2022-01-19 14:59:25,495 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=6583, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=544, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=344, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=139, PETRI_FLOW=14546, PETRI_PLACES=562, PETRI_TRANSITIONS=895} [2022-01-19 14:59:25,496 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 444 predicate places. [2022-01-19 14:59:25,496 INFO L470 AbstractCegarLoop]: Abstraction has has 562 places, 895 transitions, 14546 flow [2022-01-19 14:59:25,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 73 states have (on average 60.49315068493151) internal successors, (4416), 73 states have internal predecessors, (4416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:25,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:25,497 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:59:25,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-01-19 14:59:25,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:25,716 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:59:25,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:25,716 INFO L85 PathProgramCache]: Analyzing trace with hash 319901857, now seen corresponding path program 6 times [2022-01-19 14:59:25,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:25,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97779914] [2022-01-19 14:59:25,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:25,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 34 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-01-19 14:59:25,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:25,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97779914] [2022-01-19 14:59:25,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97779914] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:59:25,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [470367148] [2022-01-19 14:59:25,880 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 14:59:25,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:25,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:59:25,882 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) [2022-01-19 14:59:25,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-19 14:59:25,976 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-19 14:59:25,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:59:25,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 16 conjunts are in the unsatisfiable core [2022-01-19 14:59:25,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:59:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 14:59:26,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:59:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-19 14:59:26,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [470367148] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:59:26,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:59:26,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 28 [2022-01-19 14:59:26,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742361798] [2022-01-19 14:59:26,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:59:26,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-19 14:59:26,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-19 14:59:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2022-01-19 14:59:26,711 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 133 [2022-01-19 14:59:26,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 562 places, 895 transitions, 14546 flow. Second operand has 28 states, 28 states have (on average 97.0) internal successors, (2716), 28 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:26,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:26,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 133 [2022-01-19 14:59:26,713 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:34,314 INFO L129 PetriNetUnfolder]: 4096/19142 cut-off events. [2022-01-19 14:59:34,315 INFO L130 PetriNetUnfolder]: For 1107077/1108252 co-relation queries the response was YES. [2022-01-19 14:59:34,603 INFO L84 FinitePrefix]: Finished finitePrefix Result has 151765 conditions, 19142 events. 4096/19142 cut-off events. For 1107077/1108252 co-relation queries the response was YES. Maximal size of possible extension queue 596. Compared 241195 event pairs, 1749 based on Foata normal form. 242/17974 useless extension candidates. Maximal degree in co-relation 151584. Up to 6475 conditions per place. [2022-01-19 14:59:34,674 INFO L132 encePairwiseOnDemand]: 115/133 looper letters, 499 selfloop transitions, 52 changer transitions 55/721 dead transitions. [2022-01-19 14:59:34,674 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 547 places, 721 transitions, 12840 flow [2022-01-19 14:59:34,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-19 14:59:34,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-01-19 14:59:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2052 transitions. [2022-01-19 14:59:34,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7346938775510204 [2022-01-19 14:59:34,677 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2052 transitions. [2022-01-19 14:59:34,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2052 transitions. [2022-01-19 14:59:34,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:34,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2052 transitions. [2022-01-19 14:59:34,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 97.71428571428571) internal successors, (2052), 21 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:34,683 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:34,683 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 133.0) internal successors, (2926), 22 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:34,683 INFO L186 Difference]: Start difference. First operand has 562 places, 895 transitions, 14546 flow. Second operand 21 states and 2052 transitions. [2022-01-19 14:59:34,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 547 places, 721 transitions, 12840 flow [2022-01-19 14:59:37,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 721 transitions, 10632 flow, removed 776 selfloop flow, removed 78 redundant places. [2022-01-19 14:59:37,401 INFO L242 Difference]: Finished difference. Result has 478 places, 641 transitions, 8269 flow [2022-01-19 14:59:37,402 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=7962, PETRI_DIFFERENCE_MINUEND_PLACES=449, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=654, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=606, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8269, PETRI_PLACES=478, PETRI_TRANSITIONS=641} [2022-01-19 14:59:37,402 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 360 predicate places. [2022-01-19 14:59:37,402 INFO L470 AbstractCegarLoop]: Abstraction has has 478 places, 641 transitions, 8269 flow [2022-01-19 14:59:37,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 97.0) internal successors, (2716), 28 states have internal predecessors, (2716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:37,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:37,403 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:59:37,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-19 14:59:37,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-01-19 14:59:37,607 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:59:37,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:37,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1444085505, now seen corresponding path program 7 times [2022-01-19 14:59:37,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:37,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841251593] [2022-01-19 14:59:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:37,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:37,798 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 28 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 14:59:37,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841251593] [2022-01-19 14:59:37,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841251593] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:59:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825150973] [2022-01-19 14:59:37,799 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 14:59:37,799 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:37,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:59:37,804 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) [2022-01-19 14:59:37,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-19 14:59:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:37,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-19 14:59:37,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:59:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 30 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:59:38,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:59:39,350 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 19 proven. 28 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:59:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825150973] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:59:39,350 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:59:39,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 41 [2022-01-19 14:59:39,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001082862] [2022-01-19 14:59:39,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:59:39,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-19 14:59:39,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:39,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-19 14:59:39,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=1368, Unknown=0, NotChecked=0, Total=1640 [2022-01-19 14:59:39,354 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 133 [2022-01-19 14:59:39,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 641 transitions, 8269 flow. Second operand has 41 states, 41 states have (on average 96.78048780487805) internal successors, (3968), 41 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:39,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:39,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 133 [2022-01-19 14:59:39,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:47,567 INFO L129 PetriNetUnfolder]: 4969/22578 cut-off events. [2022-01-19 14:59:47,567 INFO L130 PetriNetUnfolder]: For 1271156/1272358 co-relation queries the response was YES. [2022-01-19 14:59:47,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 177228 conditions, 22578 events. 4969/22578 cut-off events. For 1271156/1272358 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 290173 event pairs, 1116 based on Foata normal form. 337/21464 useless extension candidates. Maximal degree in co-relation 177074. Up to 4281 conditions per place. [2022-01-19 14:59:47,906 INFO L132 encePairwiseOnDemand]: 113/133 looper letters, 249 selfloop transitions, 466 changer transitions 65/894 dead transitions. [2022-01-19 14:59:47,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 894 transitions, 14956 flow [2022-01-19 14:59:47,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-19 14:59:47,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2022-01-19 14:59:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3733 transitions. [2022-01-19 14:59:47,910 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7386228729719034 [2022-01-19 14:59:47,910 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3733 transitions. [2022-01-19 14:59:47,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3733 transitions. [2022-01-19 14:59:47,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:47,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3733 transitions. [2022-01-19 14:59:47,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 98.23684210526316) internal successors, (3733), 38 states have internal predecessors, (3733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:47,918 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 133.0) internal successors, (5187), 39 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:47,919 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 133.0) internal successors, (5187), 39 states have internal predecessors, (5187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:47,919 INFO L186 Difference]: Start difference. First operand has 478 places, 641 transitions, 8269 flow. Second operand 38 states and 3733 transitions. [2022-01-19 14:59:47,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 894 transitions, 14956 flow [2022-01-19 14:59:50,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 894 transitions, 14244 flow, removed 327 selfloop flow, removed 31 redundant places. [2022-01-19 14:59:50,826 INFO L242 Difference]: Finished difference. Result has 463 places, 762 transitions, 11349 flow [2022-01-19 14:59:50,826 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=7019, PETRI_DIFFERENCE_MINUEND_PLACES=419, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=11349, PETRI_PLACES=463, PETRI_TRANSITIONS=762} [2022-01-19 14:59:50,826 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 345 predicate places. [2022-01-19 14:59:50,827 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 762 transitions, 11349 flow [2022-01-19 14:59:50,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 96.78048780487805) internal successors, (3968), 41 states have internal predecessors, (3968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:50,827 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:50,827 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:59:50,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-19 14:59:51,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-19 14:59:51,028 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:59:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1653979319, now seen corresponding path program 8 times [2022-01-19 14:59:51,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:51,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937480340] [2022-01-19 14:59:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:51,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:51,212 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:59:51,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:51,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937480340] [2022-01-19 14:59:51,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937480340] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:59:51,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062969001] [2022-01-19 14:59:51,213 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 14:59:51,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:51,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:59:51,220 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) [2022-01-19 14:59:51,224 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-19 14:59:51,318 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 14:59:51,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:59:51,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-19 14:59:51,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:59:51,921 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:59:51,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 14:59:52,721 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 23 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-19 14:59:52,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062969001] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 14:59:52,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 14:59:52,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 41 [2022-01-19 14:59:52,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427901792] [2022-01-19 14:59:52,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 14:59:52,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-01-19 14:59:52,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 14:59:52,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-01-19 14:59:52,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=1366, Unknown=0, NotChecked=0, Total=1640 [2022-01-19 14:59:52,725 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 133 [2022-01-19 14:59:52,727 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 762 transitions, 11349 flow. Second operand has 41 states, 41 states have (on average 96.7560975609756) internal successors, (3967), 41 states have internal predecessors, (3967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:52,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 14:59:52,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 133 [2022-01-19 14:59:52,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 14:59:57,234 INFO L129 PetriNetUnfolder]: 2292/11694 cut-off events. [2022-01-19 14:59:57,234 INFO L130 PetriNetUnfolder]: For 586217/586945 co-relation queries the response was YES. [2022-01-19 14:59:57,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 83023 conditions, 11694 events. 2292/11694 cut-off events. For 586217/586945 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 139247 event pairs, 819 based on Foata normal form. 430/11195 useless extension candidates. Maximal degree in co-relation 82879. Up to 2271 conditions per place. [2022-01-19 14:59:57,378 INFO L132 encePairwiseOnDemand]: 114/133 looper letters, 221 selfloop transitions, 113 changer transitions 194/631 dead transitions. [2022-01-19 14:59:57,378 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 631 transitions, 10936 flow [2022-01-19 14:59:57,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-01-19 14:59:57,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2022-01-19 14:59:57,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4124 transitions. [2022-01-19 14:59:57,381 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7382742570712496 [2022-01-19 14:59:57,381 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4124 transitions. [2022-01-19 14:59:57,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4124 transitions. [2022-01-19 14:59:57,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 14:59:57,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4124 transitions. [2022-01-19 14:59:57,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 98.19047619047619) internal successors, (4124), 42 states have internal predecessors, (4124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:57,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 133.0) internal successors, (5719), 43 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:57,391 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 133.0) internal successors, (5719), 43 states have internal predecessors, (5719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:57,391 INFO L186 Difference]: Start difference. First operand has 463 places, 762 transitions, 11349 flow. Second operand 42 states and 4124 transitions. [2022-01-19 14:59:57,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 631 transitions, 10936 flow [2022-01-19 14:59:58,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 631 transitions, 10003 flow, removed 411 selfloop flow, removed 49 redundant places. [2022-01-19 14:59:58,778 INFO L242 Difference]: Finished difference. Result has 441 places, 405 transitions, 5023 flow [2022-01-19 14:59:58,778 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=5998, PETRI_DIFFERENCE_MINUEND_PLACES=383, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5023, PETRI_PLACES=441, PETRI_TRANSITIONS=405} [2022-01-19 14:59:58,779 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 323 predicate places. [2022-01-19 14:59:58,779 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 405 transitions, 5023 flow [2022-01-19 14:59:58,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 96.7560975609756) internal successors, (3967), 41 states have internal predecessors, (3967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 14:59:58,780 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 14:59:58,780 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 14:59:58,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-19 14:59:58,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-01-19 14:59:58,980 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 14:59:58,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 14:59:58,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1877611692, now seen corresponding path program 9 times [2022-01-19 14:59:58,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 14:59:58,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236775603] [2022-01-19 14:59:58,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 14:59:58,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 14:59:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 14:59:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 30 proven. 21 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 14:59:59,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 14:59:59,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236775603] [2022-01-19 14:59:59,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236775603] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 14:59:59,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628656578] [2022-01-19 14:59:59,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 14:59:59,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 14:59:59,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 14:59:59,273 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) [2022-01-19 14:59:59,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-19 14:59:59,363 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 14:59:59,363 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 14:59:59,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-19 14:59:59,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 14:59:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 31 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 14:59:59,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:00:00,403 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 26 proven. 25 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-19 15:00:00,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628656578] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:00:00,403 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:00:00,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2022-01-19 15:00:00,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882574162] [2022-01-19 15:00:00,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:00:00,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-01-19 15:00:00,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:00,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-01-19 15:00:00,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1611, Unknown=0, NotChecked=0, Total=1892 [2022-01-19 15:00:00,407 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 133 [2022-01-19 15:00:00,409 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 405 transitions, 5023 flow. Second operand has 44 states, 44 states have (on average 98.43181818181819) internal successors, (4331), 44 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:00,409 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:00,409 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 133 [2022-01-19 15:00:00,409 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:02,732 INFO L129 PetriNetUnfolder]: 1399/6796 cut-off events. [2022-01-19 15:00:02,732 INFO L130 PetriNetUnfolder]: For 288258/288678 co-relation queries the response was YES. [2022-01-19 15:00:02,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45720 conditions, 6796 events. 1399/6796 cut-off events. For 288258/288678 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 69926 event pairs, 681 based on Foata normal form. 35/6299 useless extension candidates. Maximal degree in co-relation 45586. Up to 2272 conditions per place. [2022-01-19 15:00:02,824 INFO L132 encePairwiseOnDemand]: 118/133 looper letters, 142 selfloop transitions, 14 changer transitions 104/346 dead transitions. [2022-01-19 15:00:02,824 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 346 transitions, 4751 flow [2022-01-19 15:00:02,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-19 15:00:02,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-01-19 15:00:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2384 transitions. [2022-01-19 15:00:02,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7468671679197995 [2022-01-19 15:00:02,826 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2384 transitions. [2022-01-19 15:00:02,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2384 transitions. [2022-01-19 15:00:02,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:02,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2384 transitions. [2022-01-19 15:00:02,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 99.33333333333333) internal successors, (2384), 24 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:02,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 133.0) internal successors, (3325), 25 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:02,832 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 133.0) internal successors, (3325), 25 states have internal predecessors, (3325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:02,832 INFO L186 Difference]: Start difference. First operand has 441 places, 405 transitions, 5023 flow. Second operand 24 states and 2384 transitions. [2022-01-19 15:00:02,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 346 transitions, 4751 flow [2022-01-19 15:00:03,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 346 transitions, 4174 flow, removed 160 selfloop flow, removed 74 redundant places. [2022-01-19 15:00:03,357 INFO L242 Difference]: Finished difference. Result has 338 places, 238 transitions, 2134 flow [2022-01-19 15:00:03,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3089, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2134, PETRI_PLACES=338, PETRI_TRANSITIONS=238} [2022-01-19 15:00:03,358 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 220 predicate places. [2022-01-19 15:00:03,358 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 238 transitions, 2134 flow [2022-01-19 15:00:03,359 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 98.43181818181819) internal successors, (4331), 44 states have internal predecessors, (4331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:03,359 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:03,359 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:00:03,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-19 15:00:03,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-01-19 15:00:03,559 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:00:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash 480319130, now seen corresponding path program 10 times [2022-01-19 15:00:03,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:03,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999551718] [2022-01-19 15:00:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:03,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:03,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:03,733 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 15:00:03,734 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999551718] [2022-01-19 15:00:03,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999551718] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:03,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246166324] [2022-01-19 15:00:03,734 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 15:00:03,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:03,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:03,736 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) [2022-01-19 15:00:03,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-19 15:00:04,005 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 15:00:04,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:00:04,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 63 conjunts are in the unsatisfiable core [2022-01-19 15:00:04,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:00:05,708 INFO L353 Elim1Store]: treesize reduction 93, result has 7.0 percent of original size [2022-01-19 15:00:05,709 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 47 treesize of output 20 [2022-01-19 15:00:05,740 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:05,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:00:06,337 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 15:00:06,337 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-01-19 15:00:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:09,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246166324] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:00:09,141 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:00:09,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 25] total 51 [2022-01-19 15:00:09,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716970942] [2022-01-19 15:00:09,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:00:09,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-19 15:00:09,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:09,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-19 15:00:09,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=2205, Unknown=0, NotChecked=0, Total=2550 [2022-01-19 15:00:09,144 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2022-01-19 15:00:09,146 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 238 transitions, 2134 flow. Second operand has 51 states, 51 states have (on average 75.3921568627451) internal successors, (3845), 51 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:09,146 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:09,146 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2022-01-19 15:00:09,146 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:12,825 INFO L129 PetriNetUnfolder]: 2186/8488 cut-off events. [2022-01-19 15:00:12,825 INFO L130 PetriNetUnfolder]: For 201258/201405 co-relation queries the response was YES. [2022-01-19 15:00:12,887 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51164 conditions, 8488 events. 2186/8488 cut-off events. For 201258/201405 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 87622 event pairs, 818 based on Foata normal form. 19/7963 useless extension candidates. Maximal degree in co-relation 51069. Up to 3150 conditions per place. [2022-01-19 15:00:12,909 INFO L132 encePairwiseOnDemand]: 102/133 looper letters, 252 selfloop transitions, 135 changer transitions 95/546 dead transitions. [2022-01-19 15:00:12,909 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 546 transitions, 8245 flow [2022-01-19 15:00:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-19 15:00:12,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2022-01-19 15:00:12,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 4422 transitions. [2022-01-19 15:00:12,913 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5833003561535417 [2022-01-19 15:00:12,913 INFO L72 ComplementDD]: Start complementDD. Operand 57 states and 4422 transitions. [2022-01-19 15:00:12,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 4422 transitions. [2022-01-19 15:00:12,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:12,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 57 states and 4422 transitions. [2022-01-19 15:00:12,919 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 58 states, 57 states have (on average 77.57894736842105) internal successors, (4422), 57 states have internal predecessors, (4422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:12,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 58 states, 58 states have (on average 133.0) internal successors, (7714), 58 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:12,925 INFO L81 ComplementDD]: Finished complementDD. Result has 58 states, 58 states have (on average 133.0) internal successors, (7714), 58 states have internal predecessors, (7714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:12,925 INFO L186 Difference]: Start difference. First operand has 338 places, 238 transitions, 2134 flow. Second operand 57 states and 4422 transitions. [2022-01-19 15:00:12,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 546 transitions, 8245 flow [2022-01-19 15:00:13,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 546 transitions, 6451 flow, removed 876 selfloop flow, removed 49 redundant places. [2022-01-19 15:00:13,496 INFO L242 Difference]: Finished difference. Result has 311 places, 348 transitions, 3961 flow [2022-01-19 15:00:13,496 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=57, PETRI_FLOW=3961, PETRI_PLACES=311, PETRI_TRANSITIONS=348} [2022-01-19 15:00:13,497 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 193 predicate places. [2022-01-19 15:00:13,497 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 348 transitions, 3961 flow [2022-01-19 15:00:13,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 75.3921568627451) internal successors, (3845), 51 states have internal predecessors, (3845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:13,497 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:13,498 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:00:13,521 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-19 15:00:13,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-19 15:00:13,720 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:00:13,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:13,721 INFO L85 PathProgramCache]: Analyzing trace with hash -233299632, now seen corresponding path program 11 times [2022-01-19 15:00:13,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:13,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073343628] [2022-01-19 15:00:13,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:13,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 15:00:13,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:13,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073343628] [2022-01-19 15:00:13,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073343628] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:13,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263497994] [2022-01-19 15:00:13,897 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-19 15:00:13,897 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:13,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:13,898 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) [2022-01-19 15:00:13,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-19 15:00:14,004 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-19 15:00:14,005 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:00:14,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 53 conjunts are in the unsatisfiable core [2022-01-19 15:00:14,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:00:15,270 INFO L353 Elim1Store]: treesize reduction 48, result has 5.9 percent of original size [2022-01-19 15:00:15,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 48 treesize of output 17 [2022-01-19 15:00:15,300 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 5 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:15,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:00:15,762 INFO L353 Elim1Store]: treesize reduction 47, result has 53.0 percent of original size [2022-01-19 15:00:15,763 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 76 treesize of output 78 [2022-01-19 15:00:18,002 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 2 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:18,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263497994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:00:18,002 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:00:18,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 25, 25] total 49 [2022-01-19 15:00:18,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656833146] [2022-01-19 15:00:18,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:00:18,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-19 15:00:18,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:18,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-19 15:00:18,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=2005, Unknown=0, NotChecked=0, Total=2352 [2022-01-19 15:00:18,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 133 [2022-01-19 15:00:18,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 348 transitions, 3961 flow. Second operand has 49 states, 49 states have (on average 75.51020408163265) internal successors, (3700), 49 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:18,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:18,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 133 [2022-01-19 15:00:18,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:30,746 INFO L129 PetriNetUnfolder]: 9494/33890 cut-off events. [2022-01-19 15:00:30,746 INFO L130 PetriNetUnfolder]: For 510814/511599 co-relation queries the response was YES. [2022-01-19 15:00:31,027 INFO L84 FinitePrefix]: Finished finitePrefix Result has 192948 conditions, 33890 events. 9494/33890 cut-off events. For 510814/511599 co-relation queries the response was YES. Maximal size of possible extension queue 920. Compared 425425 event pairs, 1220 based on Foata normal form. 117/32371 useless extension candidates. Maximal degree in co-relation 192860. Up to 7903 conditions per place. [2022-01-19 15:00:31,112 INFO L132 encePairwiseOnDemand]: 109/133 looper letters, 564 selfloop transitions, 855 changer transitions 212/1695 dead transitions. [2022-01-19 15:00:31,112 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1695 transitions, 27664 flow [2022-01-19 15:00:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-01-19 15:00:31,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2022-01-19 15:00:31,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 9192 transitions. [2022-01-19 15:00:31,120 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5907075380759591 [2022-01-19 15:00:31,120 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 9192 transitions. [2022-01-19 15:00:31,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 9192 transitions. [2022-01-19 15:00:31,121 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:31,121 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 9192 transitions. [2022-01-19 15:00:31,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 78.56410256410257) internal successors, (9192), 117 states have internal predecessors, (9192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:31,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 133.0) internal successors, (15694), 118 states have internal predecessors, (15694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:31,143 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 133.0) internal successors, (15694), 118 states have internal predecessors, (15694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:31,143 INFO L186 Difference]: Start difference. First operand has 311 places, 348 transitions, 3961 flow. Second operand 117 states and 9192 transitions. [2022-01-19 15:00:31,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1695 transitions, 27664 flow [2022-01-19 15:00:32,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 1695 transitions, 26705 flow, removed 461 selfloop flow, removed 22 redundant places. [2022-01-19 15:00:32,911 INFO L242 Difference]: Finished difference. Result has 485 places, 1057 transitions, 17686 flow [2022-01-19 15:00:32,912 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=3767, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=17686, PETRI_PLACES=485, PETRI_TRANSITIONS=1057} [2022-01-19 15:00:32,912 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 367 predicate places. [2022-01-19 15:00:32,912 INFO L470 AbstractCegarLoop]: Abstraction has has 485 places, 1057 transitions, 17686 flow [2022-01-19 15:00:32,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 75.51020408163265) internal successors, (3700), 49 states have internal predecessors, (3700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:32,913 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:32,913 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:00:32,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-19 15:00:33,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:33,114 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:00:33,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:33,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2146002187, now seen corresponding path program 12 times [2022-01-19 15:00:33,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:33,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967865903] [2022-01-19 15:00:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:33,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:34,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:34,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967865903] [2022-01-19 15:00:34,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967865903] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:34,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681987823] [2022-01-19 15:00:34,425 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-19 15:00:34,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:34,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:34,426 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) [2022-01-19 15:00:34,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-19 15:00:34,566 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-19 15:00:34,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:00:34,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 52 conjunts are in the unsatisfiable core [2022-01-19 15:00:34,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:00:35,385 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-19 15:00:35,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 18 [2022-01-19 15:00:35,456 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 10 proven. 58 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-19 15:00:35,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:00:36,041 INFO L353 Elim1Store]: treesize reduction 140, result has 46.4 percent of original size [2022-01-19 15:00:36,042 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 110 treesize of output 152 [2022-01-19 15:00:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 15:00:36,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681987823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:00:36,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:00:36,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 17, 12] total 53 [2022-01-19 15:00:36,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563999270] [2022-01-19 15:00:36,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:00:36,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-19 15:00:36,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:00:36,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-19 15:00:36,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=2499, Unknown=0, NotChecked=0, Total=2756 [2022-01-19 15:00:36,667 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 133 [2022-01-19 15:00:36,668 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 1057 transitions, 17686 flow. Second operand has 53 states, 53 states have (on average 68.69811320754717) internal successors, (3641), 53 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:36,668 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:00:36,668 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 133 [2022-01-19 15:00:36,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:00:52,013 INFO L129 PetriNetUnfolder]: 5453/20671 cut-off events. [2022-01-19 15:00:52,013 INFO L130 PetriNetUnfolder]: For 900991/901604 co-relation queries the response was YES. [2022-01-19 15:00:52,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 160903 conditions, 20671 events. 5453/20671 cut-off events. For 900991/901604 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 244260 event pairs, 1232 based on Foata normal form. 267/19822 useless extension candidates. Maximal degree in co-relation 160732. Up to 4722 conditions per place. [2022-01-19 15:00:52,315 INFO L132 encePairwiseOnDemand]: 108/133 looper letters, 415 selfloop transitions, 374 changer transitions 388/1234 dead transitions. [2022-01-19 15:00:52,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 551 places, 1234 transitions, 26894 flow [2022-01-19 15:00:52,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 131 states. [2022-01-19 15:00:52,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2022-01-19 15:00:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 9194 transitions. [2022-01-19 15:00:52,320 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5276932789990243 [2022-01-19 15:00:52,320 INFO L72 ComplementDD]: Start complementDD. Operand 131 states and 9194 transitions. [2022-01-19 15:00:52,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 131 states and 9194 transitions. [2022-01-19 15:00:52,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:00:52,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 131 states and 9194 transitions. [2022-01-19 15:00:52,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 132 states, 131 states have (on average 70.18320610687023) internal successors, (9194), 131 states have internal predecessors, (9194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:52,344 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 132 states, 132 states have (on average 133.0) internal successors, (17556), 132 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:52,345 INFO L81 ComplementDD]: Finished complementDD. Result has 132 states, 132 states have (on average 133.0) internal successors, (17556), 132 states have internal predecessors, (17556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:52,345 INFO L186 Difference]: Start difference. First operand has 485 places, 1057 transitions, 17686 flow. Second operand 131 states and 9194 transitions. [2022-01-19 15:00:52,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 551 places, 1234 transitions, 26894 flow [2022-01-19 15:00:54,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1234 transitions, 22998 flow, removed 1793 selfloop flow, removed 83 redundant places. [2022-01-19 15:00:54,991 INFO L242 Difference]: Finished difference. Result has 564 places, 638 transitions, 10553 flow [2022-01-19 15:00:54,992 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=7941, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=564, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=296, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=131, PETRI_FLOW=10553, PETRI_PLACES=564, PETRI_TRANSITIONS=638} [2022-01-19 15:00:54,992 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 446 predicate places. [2022-01-19 15:00:54,993 INFO L470 AbstractCegarLoop]: Abstraction has has 564 places, 638 transitions, 10553 flow [2022-01-19 15:00:54,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 68.69811320754717) internal successors, (3641), 53 states have internal predecessors, (3641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:00:54,993 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:00:54,994 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:00:55,012 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-01-19 15:00:55,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:55,201 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:00:55,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:00:55,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1726533075, now seen corresponding path program 13 times [2022-01-19 15:00:55,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:00:55,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829964505] [2022-01-19 15:00:55,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:00:55,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:00:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 15:00:55,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:00:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829964505] [2022-01-19 15:00:55,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829964505] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:00:55,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296535632] [2022-01-19 15:00:55,469 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-19 15:00:55,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:00:55,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:00:55,472 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) [2022-01-19 15:00:55,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-19 15:00:55,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:00:55,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-19 15:00:55,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:00:56,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 15:00:56,490 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 15:00:56,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:00:56,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:00:57,667 INFO L353 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2022-01-19 15:00:57,667 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 22 [2022-01-19 15:00:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:00:57,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:01:00,681 INFO L353 Elim1Store]: treesize reduction 39, result has 40.0 percent of original size [2022-01-19 15:01:00,682 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 344 treesize of output 189 [2022-01-19 15:01:00,739 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-19 15:01:00,739 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 528 treesize of output 528 [2022-01-19 15:01:00,797 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-19 15:01:00,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 450 treesize of output 408 [2022-01-19 15:01:00,854 INFO L353 Elim1Store]: treesize reduction 182, result has 30.3 percent of original size [2022-01-19 15:01:00,854 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 330 treesize of output 348 [2022-01-19 15:01:05,122 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:01:05,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296535632] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:01:05,122 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:01:05,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 38, 35] total 76 [2022-01-19 15:01:05,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326350875] [2022-01-19 15:01:05,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:01:05,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 76 states [2022-01-19 15:01:05,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:01:05,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2022-01-19 15:01:05,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1033, Invalid=4596, Unknown=71, NotChecked=0, Total=5700 [2022-01-19 15:01:05,127 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 133 [2022-01-19 15:01:05,130 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 638 transitions, 10553 flow. Second operand has 76 states, 76 states have (on average 60.69736842105263) internal successors, (4613), 76 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:01:05,130 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:01:05,130 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 133 [2022-01-19 15:01:05,130 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:01:21,156 INFO L129 PetriNetUnfolder]: 6146/23086 cut-off events. [2022-01-19 15:01:21,157 INFO L130 PetriNetUnfolder]: For 1009608/1010274 co-relation queries the response was YES. [2022-01-19 15:01:21,491 INFO L84 FinitePrefix]: Finished finitePrefix Result has 182887 conditions, 23086 events. 6146/23086 cut-off events. For 1009608/1010274 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 271684 event pairs, 1336 based on Foata normal form. 134/22072 useless extension candidates. Maximal degree in co-relation 182685. Up to 5261 conditions per place. [2022-01-19 15:01:21,559 INFO L132 encePairwiseOnDemand]: 97/133 looper letters, 365 selfloop transitions, 543 changer transitions 221/1183 dead transitions. [2022-01-19 15:01:21,559 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 615 places, 1183 transitions, 26996 flow [2022-01-19 15:01:21,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-01-19 15:01:21,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2022-01-19 15:01:21,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 7264 transitions. [2022-01-19 15:01:21,563 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.4790924680121356 [2022-01-19 15:01:21,563 INFO L72 ComplementDD]: Start complementDD. Operand 114 states and 7264 transitions. [2022-01-19 15:01:21,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 7264 transitions. [2022-01-19 15:01:21,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:01:21,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 114 states and 7264 transitions. [2022-01-19 15:01:21,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 115 states, 114 states have (on average 63.719298245614034) internal successors, (7264), 114 states have internal predecessors, (7264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:01:21,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 115 states, 115 states have (on average 133.0) internal successors, (15295), 115 states have internal predecessors, (15295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:01:21,581 INFO L81 ComplementDD]: Finished complementDD. Result has 115 states, 115 states have (on average 133.0) internal successors, (15295), 115 states have internal predecessors, (15295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:01:21,581 INFO L186 Difference]: Start difference. First operand has 564 places, 638 transitions, 10553 flow. Second operand 114 states and 7264 transitions. [2022-01-19 15:01:21,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 615 places, 1183 transitions, 26996 flow [2022-01-19 15:01:25,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 1183 transitions, 24214 flow, removed 1353 selfloop flow, removed 86 redundant places. [2022-01-19 15:01:25,426 INFO L242 Difference]: Finished difference. Result has 574 places, 717 transitions, 13370 flow [2022-01-19 15:01:25,427 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=10089, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=451, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=114, PETRI_FLOW=13370, PETRI_PLACES=574, PETRI_TRANSITIONS=717} [2022-01-19 15:01:25,427 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 456 predicate places. [2022-01-19 15:01:25,427 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 717 transitions, 13370 flow [2022-01-19 15:01:25,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 76 states, 76 states have (on average 60.69736842105263) internal successors, (4613), 76 states have internal predecessors, (4613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:01:25,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:01:25,428 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:01:25,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-19 15:01:25,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:01:25,643 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:01:25,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:01:25,644 INFO L85 PathProgramCache]: Analyzing trace with hash 86884059, now seen corresponding path program 14 times [2022-01-19 15:01:25,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:01:25,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533461278] [2022-01-19 15:01:25,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:01:25,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:01:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:01:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:01:27,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:01:27,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533461278] [2022-01-19 15:01:27,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533461278] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:01:27,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203912615] [2022-01-19 15:01:27,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-19 15:01:27,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:01:27,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:01:27,306 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) [2022-01-19 15:01:27,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-19 15:01:27,404 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-19 15:01:27,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:01:27,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 93 conjunts are in the unsatisfiable core [2022-01-19 15:01:27,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:01:27,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:01:27,494 INFO L353 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-01-19 15:01:27,494 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-01-19 15:01:28,114 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-01-19 15:01:28,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-01-19 15:01:28,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 15:01:29,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:01:29,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:01:30,776 INFO L353 Elim1Store]: treesize reduction 241, result has 4.0 percent of original size [2022-01-19 15:01:30,777 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 71 treesize of output 30 [2022-01-19 15:01:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 9 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:01:30,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:01:37,541 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-19 15:01:37,541 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 270 treesize of output 174 [2022-01-19 15:01:37,635 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-01-19 15:01:37,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 520 treesize of output 552 [2022-01-19 15:01:37,729 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-01-19 15:01:37,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 444 treesize of output 436 [2022-01-19 15:01:37,823 INFO L353 Elim1Store]: treesize reduction 142, result has 43.4 percent of original size [2022-01-19 15:01:37,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 328 treesize of output 378 [2022-01-19 15:02:13,058 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:02:13,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203912615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 15:02:13,058 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 15:02:13,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 38, 37] total 98 [2022-01-19 15:02:13,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437198750] [2022-01-19 15:02:13,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 15:02:13,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 98 states [2022-01-19 15:02:13,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 15:02:13,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2022-01-19 15:02:13,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=958, Invalid=8479, Unknown=69, NotChecked=0, Total=9506 [2022-01-19 15:02:13,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 133 [2022-01-19 15:02:13,066 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 717 transitions, 13370 flow. Second operand has 98 states, 98 states have (on average 57.224489795918366) internal successors, (5608), 98 states have internal predecessors, (5608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:02:13,066 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 15:02:13,066 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 133 [2022-01-19 15:02:13,066 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 15:02:31,527 INFO L129 PetriNetUnfolder]: 6117/25259 cut-off events. [2022-01-19 15:02:31,527 INFO L130 PetriNetUnfolder]: For 889143/889914 co-relation queries the response was YES. [2022-01-19 15:02:32,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 176651 conditions, 25259 events. 6117/25259 cut-off events. For 889143/889914 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 308248 event pairs, 3003 based on Foata normal form. 68/23620 useless extension candidates. Maximal degree in co-relation 176465. Up to 11582 conditions per place. [2022-01-19 15:02:32,136 INFO L132 encePairwiseOnDemand]: 92/133 looper letters, 612 selfloop transitions, 139 changer transitions 63/865 dead transitions. [2022-01-19 15:02:32,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 618 places, 865 transitions, 18233 flow [2022-01-19 15:02:32,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-19 15:02:32,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2022-01-19 15:02:32,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 4502 transitions. [2022-01-19 15:02:32,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43960550727468023 [2022-01-19 15:02:32,139 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 4502 transitions. [2022-01-19 15:02:32,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 4502 transitions. [2022-01-19 15:02:32,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 15:02:32,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 4502 transitions. [2022-01-19 15:02:32,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 58.467532467532465) internal successors, (4502), 77 states have internal predecessors, (4502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:02:32,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:02:32,148 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 133.0) internal successors, (10374), 78 states have internal predecessors, (10374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:02:32,148 INFO L186 Difference]: Start difference. First operand has 574 places, 717 transitions, 13370 flow. Second operand 77 states and 4502 transitions. [2022-01-19 15:02:32,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 618 places, 865 transitions, 18233 flow [2022-01-19 15:02:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 538 places, 865 transitions, 17048 flow, removed 291 selfloop flow, removed 80 redundant places. [2022-01-19 15:02:35,711 INFO L242 Difference]: Finished difference. Result has 559 places, 770 transitions, 13916 flow [2022-01-19 15:02:35,711 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=12297, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=717, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=13916, PETRI_PLACES=559, PETRI_TRANSITIONS=770} [2022-01-19 15:02:35,712 INFO L334 CegarLoopForPetriNet]: 118 programPoint places, 441 predicate places. [2022-01-19 15:02:35,712 INFO L470 AbstractCegarLoop]: Abstraction has has 559 places, 770 transitions, 13916 flow [2022-01-19 15:02:35,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 98 states, 98 states have (on average 57.224489795918366) internal successors, (5608), 98 states have internal predecessors, (5608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 15:02:35,712 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 15:02:35,713 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-19 15:02:35,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-01-19 15:02:35,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-01-19 15:02:35,913 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2022-01-19 15:02:35,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 15:02:35,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1889053617, now seen corresponding path program 15 times [2022-01-19 15:02:35,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 15:02:35,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598748280] [2022-01-19 15:02:35,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 15:02:35,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 15:02:35,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 15:02:36,133 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-01-19 15:02:36,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 15:02:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598748280] [2022-01-19 15:02:36,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598748280] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 15:02:36,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563591459] [2022-01-19 15:02:36,133 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 15:02:36,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:02:36,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 15:02:36,136 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) [2022-01-19 15:02:36,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-19 15:02:36,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-19 15:02:36,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 15:02:36,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 82 conjunts are in the unsatisfiable core [2022-01-19 15:02:36,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 15:02:36,781 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 15:02:36,923 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 15:02:37,075 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-01-19 15:02:37,350 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:02:37,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-01-19 15:02:38,172 INFO L353 Elim1Store]: treesize reduction 162, result has 4.1 percent of original size [2022-01-19 15:02:38,172 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 69 treesize of output 24 [2022-01-19 15:02:38,229 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 15:02:38,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 15:03:03,265 INFO L353 Elim1Store]: treesize reduction 96, result has 39.6 percent of original size [2022-01-19 15:03:03,265 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 394 treesize of output 222 [2022-01-19 15:03:03,574 INFO L353 Elim1Store]: treesize reduction 192, result has 58.5 percent of original size [2022-01-19 15:03:03,574 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1124 treesize of output 1230 [2022-01-19 15:03:03,717 INFO L353 Elim1Store]: treesize reduction 144, result has 42.6 percent of original size [2022-01-19 15:03:03,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 926 treesize of output 808 [2022-01-19 15:03:03,855 INFO L353 Elim1Store]: treesize reduction 144, result has 42.6 percent of original size [2022-01-19 15:03:03,856 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 702 treesize of output 696 Received shutdown request... [2022-01-19 15:10:25,819 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 15:10:25,830 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 15:10:25,833 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-01-19 15:10:25,851 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-19 15:10:25,856 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 15:10:26,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 15:10:26,034 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. [2022-01-19 15:10:26,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (1 of 3 remaining) [2022-01-19 15:10:26,035 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (0 of 3 remaining) [2022-01-19 15:10:26,038 INFO L732 BasicCegarLoop]: Path program histogram: [15, 3, 1, 1, 1, 1, 1] [2022-01-19 15:10:26,039 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 15:10:26,039 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 15:10:26,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 03:10:26 BasicIcfg [2022-01-19 15:10:26,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 15:10:26,042 INFO L158 Benchmark]: Toolchain (without parser) took 787926.85ms. Allocated memory was 356.5MB in the beginning and 11.6GB in the end (delta: 11.3GB). Free memory was 300.0MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2022-01-19 15:10:26,042 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 356.5MB. Free memory is still 317.0MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:10:26,042 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.41ms. Allocated memory is still 356.5MB. Free memory was 299.7MB in the beginning and 323.6MB in the end (delta: -24.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. [2022-01-19 15:10:26,042 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.07ms. Allocated memory is still 356.5MB. Free memory was 323.6MB in the beginning and 321.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 15:10:26,042 INFO L158 Benchmark]: Boogie Preprocessor took 31.17ms. Allocated memory is still 356.5MB. Free memory was 321.6MB in the beginning and 320.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 15:10:26,043 INFO L158 Benchmark]: RCFGBuilder took 467.33ms. Allocated memory is still 356.5MB. Free memory was 320.5MB in the beginning and 301.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2022-01-19 15:10:26,043 INFO L158 Benchmark]: TraceAbstraction took 787091.72ms. Allocated memory was 356.5MB in the beginning and 11.6GB in the end (delta: 11.3GB). Free memory was 300.6MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2022-01-19 15:10:26,044 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 356.5MB. Free memory is still 317.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 284.41ms. Allocated memory is still 356.5MB. Free memory was 299.7MB in the beginning and 323.6MB in the end (delta: -24.0MB). Peak memory consumption was 11.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.07ms. Allocated memory is still 356.5MB. Free memory was 323.6MB in the beginning and 321.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.17ms. Allocated memory is still 356.5MB. Free memory was 321.6MB in the beginning and 320.5MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 467.33ms. Allocated memory is still 356.5MB. Free memory was 320.5MB in the beginning and 301.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 787091.72ms. Allocated memory was 356.5MB in the beginning and 11.6GB in the end (delta: 11.3GB). Free memory was 300.6MB in the beginning and 8.8GB in the end (delta: -8.5GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. - TimeoutResultAtElement [Line: 89]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 152 with TraceHistMax 3,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 28ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 787.0s, OverallIterations: 23, TraceHistogramMax: 3, PathProgramHistogramMax: 15, EmptinessCheckTime: 0.0s, AutomataDifference: 171.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15003 SdHoareTripleChecker+Valid, 15.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15003 mSDsluCounter, 13191 SdHoareTripleChecker+Invalid, 12.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 15840 IncrementalHoareTripleChecker+Unchecked, 22263 mSDsCounter, 1997 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 28294 IncrementalHoareTripleChecker+Invalid, 46131 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1997 mSolverCounterUnsat, 655 mSDtfsCounter, 28294 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5723 GetRequests, 3851 SyntacticMatches, 68 SemanticMatches, 1804 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 79711 ImplicationChecksByTransitivity, 82.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17686occurred in iteration=19, InterpolantAutomatonStates: 1125, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 138.3s InterpolantComputationTime, 4971 NumberOfCodeBlocks, 4911 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 7103 ConstructedInterpolants, 380 QuantifiedInterpolants, 138600 SizeOfPredicates, 443 NumberOfNonLiveVariables, 4783 ConjunctsInSsa, 833 ConjunctsInUnsatCore, 54 InterpolantComputations, 6 PerfectInterpolantSequences, 607/2075 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown