/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-Before.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bf34d27 [2022-01-19 08:59:54,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-19 08:59:54,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-19 08:59:54,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-19 08:59:54,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-19 08:59:54,253 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-19 08:59:54,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-19 08:59:54,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-19 08:59:54,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-19 08:59:54,257 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-19 08:59:54,258 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-19 08:59:54,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-19 08:59:54,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-19 08:59:54,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-19 08:59:54,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-19 08:59:54,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-19 08:59:54,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-19 08:59:54,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-19 08:59:54,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-19 08:59:54,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-19 08:59:54,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-19 08:59:54,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-19 08:59:54,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-19 08:59:54,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-19 08:59:54,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-19 08:59:54,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-19 08:59:54,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-19 08:59:54,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-19 08:59:54,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-19 08:59:54,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-19 08:59:54,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-19 08:59:54,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-19 08:59:54,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-19 08:59:54,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-19 08:59:54,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-19 08:59:54,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-19 08:59:54,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-19 08:59:54,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-19 08:59:54,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-19 08:59:54,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-19 08:59:54,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-19 08:59:54,324 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-Before.epf [2022-01-19 08:59:54,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-19 08:59:54,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-19 08:59:54,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-19 08:59:54,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-19 08:59:54,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * Use SBE=true [2022-01-19 08:59:54,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-19 08:59:54,339 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-19 08:59:54,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 08:59:54,340 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-19 08:59:54,340 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-19 08:59:54,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-19 08:59:54,341 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-19 08:59:54,341 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-19 08:59:54,341 INFO L138 SettingsManager]: * When to check the insufficient erros location relative to the other error locations=BEFORE [2022-01-19 08:59:54,341 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-19 08:59:54,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-19 08:59:54,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-19 08:59:54,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-19 08:59:54,527 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-19 08:59:54,528 INFO L275 PluginConnector]: CDTParser initialized [2022-01-19 08:59:54,528 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-01-19 08:59:54,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed2c93b/7c90c7d694194e88bb802e77db872121/FLAGf6065150c [2022-01-19 08:59:54,898 INFO L306 CDTParser]: Found 1 translation units. [2022-01-19 08:59:54,899 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-threaded-sum-3.wvr.c [2022-01-19 08:59:54,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed2c93b/7c90c7d694194e88bb802e77db872121/FLAGf6065150c [2022-01-19 08:59:55,322 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ed2c93b/7c90c7d694194e88bb802e77db872121 [2022-01-19 08:59:55,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-19 08:59:55,324 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-19 08:59:55,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-19 08:59:55,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-19 08:59:55,330 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-19 08:59:55,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccee57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55, skipping insertion in model container [2022-01-19 08:59:55,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-19 08:59:55,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-19 08:59:55,495 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-threaded-sum-3.wvr.c[2957,2970] [2022-01-19 08:59:55,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 08:59:55,502 INFO L203 MainTranslator]: Completed pre-run [2022-01-19 08:59:55,537 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-threaded-sum-3.wvr.c[2957,2970] [2022-01-19 08:59:55,537 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-19 08:59:55,545 INFO L208 MainTranslator]: Completed translation [2022-01-19 08:59:55,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55 WrapperNode [2022-01-19 08:59:55,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-19 08:59:55,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-19 08:59:55,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-19 08:59:55,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-19 08:59:55,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,573 INFO L137 Inliner]: procedures = 22, calls = 46, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 79 [2022-01-19 08:59:55,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-19 08:59:55,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-19 08:59:55,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-19 08:59:55,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-19 08:59:55,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,587 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,588 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-19 08:59:55,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-19 08:59:55,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-19 08:59:55,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-19 08:59:55,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (1/1) ... [2022-01-19 08:59:55,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-19 08:59:55,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:59:55,614 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 08:59:55,616 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 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-19 08:59:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-19 08:59:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-19 08:59:55,635 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-01-19 08:59:55,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-01-19 08:59:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-19 08:59:55,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-19 08:59:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-19 08:59:55,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-19 08:59:55,637 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 08:59:55,688 INFO L234 CfgBuilder]: Building ICFG [2022-01-19 08:59:55,689 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-19 08:59:55,894 INFO L275 CfgBuilder]: Performing block encoding [2022-01-19 08:59:55,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-19 08:59:55,924 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-19 08:59:55,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 08:59:55 BoogieIcfgContainer [2022-01-19 08:59:55,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-19 08:59:55,927 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-19 08:59:55,927 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-19 08:59:55,931 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-19 08:59:55,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.01 08:59:55" (1/3) ... [2022-01-19 08:59:55,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da9fa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 08:59:55, skipping insertion in model container [2022-01-19 08:59:55,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.01 08:59:55" (2/3) ... [2022-01-19 08:59:55,932 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da9fa90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.01 08:59:55, skipping insertion in model container [2022-01-19 08:59:55,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.01 08:59:55" (3/3) ... [2022-01-19 08:59:55,933 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-threaded-sum-3.wvr.c [2022-01-19 08:59:55,936 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-19 08:59:55,937 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-19 08:59:55,937 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-19 08:59:55,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,964 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,965 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,965 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,967 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,971 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,971 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,971 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,971 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,972 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,974 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,974 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,974 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,974 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,974 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,975 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,976 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,976 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,976 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,978 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~cond~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,979 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~cond~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,979 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,980 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,980 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,980 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,980 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,980 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~cond~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-19 08:59:55,982 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-19 08:59:56,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-19 08:59:56,016 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 08:59:56,016 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-19 08:59:56,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 117 places, 115 transitions, 254 flow [2022-01-19 08:59:56,051 INFO L129 PetriNetUnfolder]: 8/112 cut-off events. [2022-01-19 08:59:56,051 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 08:59:56,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 8/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 75. Up to 2 conditions per place. [2022-01-19 08:59:56,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 115 transitions, 254 flow [2022-01-19 08:59:56,057 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 101 transitions, 220 flow [2022-01-19 08:59:56,071 INFO L129 PetriNetUnfolder]: 8/100 cut-off events. [2022-01-19 08:59:56,071 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-01-19 08:59:56,071 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:59:56,072 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] [2022-01-19 08:59:56,072 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 08:59:56,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:59:56,075 INFO L85 PathProgramCache]: Analyzing trace with hash 1016748740, now seen corresponding path program 1 times [2022-01-19 08:59:56,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:59:56,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117233607] [2022-01-19 08:59:56,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:59:56,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:59:56,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:59:56,783 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 08:59:56,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:59:56,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117233607] [2022-01-19 08:59:56,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117233607] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:59:56,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:59:56,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 08:59:56,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468692615] [2022-01-19 08:59:56,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:59:56,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 08:59:56,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:59:56,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 08:59:56,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 08:59:56,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 115 [2022-01-19 08:59:56,829 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 220 flow. Second operand has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 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 08:59:56,829 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:59:56,829 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 115 [2022-01-19 08:59:56,830 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:59:57,182 INFO L129 PetriNetUnfolder]: 301/767 cut-off events. [2022-01-19 08:59:57,183 INFO L130 PetriNetUnfolder]: For 98/109 co-relation queries the response was YES. [2022-01-19 08:59:57,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 767 events. 301/767 cut-off events. For 98/109 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4077 event pairs, 77 based on Foata normal form. 89/756 useless extension candidates. Maximal degree in co-relation 1120. Up to 310 conditions per place. [2022-01-19 08:59:57,189 INFO L132 encePairwiseOnDemand]: 100/115 looper letters, 54 selfloop transitions, 11 changer transitions 2/123 dead transitions. [2022-01-19 08:59:57,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 123 transitions, 416 flow [2022-01-19 08:59:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 08:59:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 08:59:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 634 transitions. [2022-01-19 08:59:57,199 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6891304347826087 [2022-01-19 08:59:57,200 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 634 transitions. [2022-01-19 08:59:57,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 634 transitions. [2022-01-19 08:59:57,201 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:59:57,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 634 transitions. [2022-01-19 08:59:57,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 79.25) internal successors, (634), 8 states have internal predecessors, (634), 0 states have call successors, (0), 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 08:59:57,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 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 08:59:57,210 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 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 08:59:57,211 INFO L186 Difference]: Start difference. First operand has 103 places, 101 transitions, 220 flow. Second operand 8 states and 634 transitions. [2022-01-19 08:59:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 123 transitions, 416 flow [2022-01-19 08:59:57,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 123 transitions, 392 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-01-19 08:59:57,217 INFO L242 Difference]: Finished difference. Result has 107 places, 101 transitions, 260 flow [2022-01-19 08:59:57,218 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=260, PETRI_PLACES=107, PETRI_TRANSITIONS=101} [2022-01-19 08:59:57,220 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 4 predicate places. [2022-01-19 08:59:57,220 INFO L470 AbstractCegarLoop]: Abstraction has has 107 places, 101 transitions, 260 flow [2022-01-19 08:59:57,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.28571428571429) internal successors, (513), 7 states have internal predecessors, (513), 0 states have call successors, (0), 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 08:59:57,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:59:57,221 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] [2022-01-19 08:59:57,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-19 08:59:57,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 08:59:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:59:57,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1082138286, now seen corresponding path program 1 times [2022-01-19 08:59:57,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:59:57,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481547087] [2022-01-19 08:59:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:59:57,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:59:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:59:57,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:59:57,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:59:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481547087] [2022-01-19 08:59:57,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481547087] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 08:59:57,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69512774] [2022-01-19 08:59:57,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:59:57,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:59:57,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 08:59:57,494 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 08:59:57,495 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 08:59:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:59:57,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 08:59:57,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 08:59:57,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:59:57,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-19 08:59:58,198 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 08:59:58,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69512774] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-19 08:59:58,198 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-19 08:59:58,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 9] total 19 [2022-01-19 08:59:58,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131916041] [2022-01-19 08:59:58,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-19 08:59:58,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-19 08:59:58,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:59:58,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-19 08:59:58,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-19 08:59:58,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 115 [2022-01-19 08:59:58,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 101 transitions, 260 flow. Second operand has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 0 states have call successors, (0), 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 08:59:58,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:59:58,204 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 115 [2022-01-19 08:59:58,204 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:59:58,730 INFO L129 PetriNetUnfolder]: 467/1001 cut-off events. [2022-01-19 08:59:58,730 INFO L130 PetriNetUnfolder]: For 497/516 co-relation queries the response was YES. [2022-01-19 08:59:58,733 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1001 events. 467/1001 cut-off events. For 497/516 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5058 event pairs, 13 based on Foata normal form. 43/980 useless extension candidates. Maximal degree in co-relation 1684. Up to 227 conditions per place. [2022-01-19 08:59:58,738 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 77 selfloop transitions, 25 changer transitions 0/159 dead transitions. [2022-01-19 08:59:58,738 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 159 transitions, 655 flow [2022-01-19 08:59:58,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 08:59:58,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 08:59:58,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1079 transitions. [2022-01-19 08:59:58,742 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6701863354037267 [2022-01-19 08:59:58,742 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1079 transitions. [2022-01-19 08:59:58,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1079 transitions. [2022-01-19 08:59:58,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:59:58,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1079 transitions. [2022-01-19 08:59:58,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 77.07142857142857) internal successors, (1079), 14 states have internal predecessors, (1079), 0 states have call successors, (0), 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 08:59:58,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 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 08:59:58,748 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 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 08:59:58,749 INFO L186 Difference]: Start difference. First operand has 107 places, 101 transitions, 260 flow. Second operand 14 states and 1079 transitions. [2022-01-19 08:59:58,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 159 transitions, 655 flow [2022-01-19 08:59:58,752 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 159 transitions, 643 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-01-19 08:59:58,755 INFO L242 Difference]: Finished difference. Result has 121 places, 113 transitions, 408 flow [2022-01-19 08:59:58,755 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=408, PETRI_PLACES=121, PETRI_TRANSITIONS=113} [2022-01-19 08:59:58,755 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 18 predicate places. [2022-01-19 08:59:58,756 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 113 transitions, 408 flow [2022-01-19 08:59:58,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.05263157894737) internal successors, (1388), 19 states have internal predecessors, (1388), 0 states have call successors, (0), 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 08:59:58,756 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:59:58,757 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 08:59:58,774 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-19 08:59:58,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 08:59:58,974 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 08:59:58,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:59:58,976 INFO L85 PathProgramCache]: Analyzing trace with hash -958633325, now seen corresponding path program 1 times [2022-01-19 08:59:58,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:59:58,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404631224] [2022-01-19 08:59:58,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:59:58,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:59:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 08:59:59,141 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 08:59:59,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 08:59:59,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404631224] [2022-01-19 08:59:59,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404631224] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 08:59:59,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 08:59:59,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 08:59:59,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157893895] [2022-01-19 08:59:59,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 08:59:59,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 08:59:59,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 08:59:59,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 08:59:59,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-19 08:59:59,143 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 115 [2022-01-19 08:59:59,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 113 transitions, 408 flow. Second operand has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 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 08:59:59,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 08:59:59,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 115 [2022-01-19 08:59:59,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 08:59:59,832 INFO L129 PetriNetUnfolder]: 2345/4747 cut-off events. [2022-01-19 08:59:59,832 INFO L130 PetriNetUnfolder]: For 9265/9268 co-relation queries the response was YES. [2022-01-19 08:59:59,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14428 conditions, 4747 events. 2345/4747 cut-off events. For 9265/9268 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 34780 event pairs, 160 based on Foata normal form. 1/4287 useless extension candidates. Maximal degree in co-relation 12058. Up to 1093 conditions per place. [2022-01-19 08:59:59,864 INFO L132 encePairwiseOnDemand]: 102/115 looper letters, 177 selfloop transitions, 105 changer transitions 0/350 dead transitions. [2022-01-19 08:59:59,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 350 transitions, 2451 flow [2022-01-19 08:59:59,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-19 08:59:59,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-01-19 08:59:59,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1329 transitions. [2022-01-19 08:59:59,867 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8254658385093168 [2022-01-19 08:59:59,867 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1329 transitions. [2022-01-19 08:59:59,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1329 transitions. [2022-01-19 08:59:59,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 08:59:59,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1329 transitions. [2022-01-19 08:59:59,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 94.92857142857143) internal successors, (1329), 14 states have internal predecessors, (1329), 0 states have call successors, (0), 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 08:59:59,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 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 08:59:59,872 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 115.0) internal successors, (1725), 15 states have internal predecessors, (1725), 0 states have call successors, (0), 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 08:59:59,872 INFO L186 Difference]: Start difference. First operand has 121 places, 113 transitions, 408 flow. Second operand 14 states and 1329 transitions. [2022-01-19 08:59:59,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 350 transitions, 2451 flow [2022-01-19 08:59:59,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 350 transitions, 2311 flow, removed 61 selfloop flow, removed 6 redundant places. [2022-01-19 08:59:59,891 INFO L242 Difference]: Finished difference. Result has 139 places, 226 transitions, 1697 flow [2022-01-19 08:59:59,892 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1697, PETRI_PLACES=139, PETRI_TRANSITIONS=226} [2022-01-19 08:59:59,892 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 36 predicate places. [2022-01-19 08:59:59,892 INFO L470 AbstractCegarLoop]: Abstraction has has 139 places, 226 transitions, 1697 flow [2022-01-19 08:59:59,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.85714285714286) internal successors, (601), 7 states have internal predecessors, (601), 0 states have call successors, (0), 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 08:59:59,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 08:59:59,893 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 08:59:59,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-19 08:59:59,893 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 08:59:59,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 08:59:59,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1199619273, now seen corresponding path program 2 times [2022-01-19 08:59:59,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 08:59:59,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906566892] [2022-01-19 08:59:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 08:59:59,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 08:59:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:00:00,074 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 09:00:00,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:00:00,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906566892] [2022-01-19 09:00:00,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906566892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:00:00,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:00:00,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 09:00:00,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207764578] [2022-01-19 09:00:00,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:00:00,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 09:00:00,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:00:00,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 09:00:00,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-01-19 09:00:00,076 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 115 [2022-01-19 09:00:00,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 226 transitions, 1697 flow. Second operand has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 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 09:00:00,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:00:00,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 115 [2022-01-19 09:00:00,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:00:00,534 INFO L129 PetriNetUnfolder]: 1521/3597 cut-off events. [2022-01-19 09:00:00,534 INFO L130 PetriNetUnfolder]: For 24796/25093 co-relation queries the response was YES. [2022-01-19 09:00:00,548 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16497 conditions, 3597 events. 1521/3597 cut-off events. For 24796/25093 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 28255 event pairs, 138 based on Foata normal form. 85/3442 useless extension candidates. Maximal degree in co-relation 13499. Up to 1192 conditions per place. [2022-01-19 09:00:00,571 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 229 selfloop transitions, 64 changer transitions 0/363 dead transitions. [2022-01-19 09:00:00,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 363 transitions, 3794 flow [2022-01-19 09:00:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-19 09:00:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-01-19 09:00:00,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 655 transitions. [2022-01-19 09:00:00,573 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7119565217391305 [2022-01-19 09:00:00,573 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 655 transitions. [2022-01-19 09:00:00,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 655 transitions. [2022-01-19 09:00:00,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:00:00,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 655 transitions. [2022-01-19 09:00:00,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 81.875) internal successors, (655), 8 states have internal predecessors, (655), 0 states have call successors, (0), 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 09:00:00,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 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 09:00:00,576 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 115.0) internal successors, (1035), 9 states have internal predecessors, (1035), 0 states have call successors, (0), 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 09:00:00,576 INFO L186 Difference]: Start difference. First operand has 139 places, 226 transitions, 1697 flow. Second operand 8 states and 655 transitions. [2022-01-19 09:00:00,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 363 transitions, 3794 flow [2022-01-19 09:00:00,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 363 transitions, 3592 flow, removed 101 selfloop flow, removed 0 redundant places. [2022-01-19 09:00:00,617 INFO L242 Difference]: Finished difference. Result has 149 places, 269 transitions, 2403 flow [2022-01-19 09:00:00,618 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=1621, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2403, PETRI_PLACES=149, PETRI_TRANSITIONS=269} [2022-01-19 09:00:00,618 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 46 predicate places. [2022-01-19 09:00:00,618 INFO L470 AbstractCegarLoop]: Abstraction has has 149 places, 269 transitions, 2403 flow [2022-01-19 09:00:00,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 79.0) internal successors, (553), 7 states have internal predecessors, (553), 0 states have call successors, (0), 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 09:00:00,619 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:00:00,619 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 09:00:00,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-19 09:00:00,619 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 09:00:00,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:00:00,619 INFO L85 PathProgramCache]: Analyzing trace with hash 82552129, now seen corresponding path program 1 times [2022-01-19 09:00:00,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:00:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144942854] [2022-01-19 09:00:00,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:00:00,620 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:00:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:00:00,767 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 09:00:00,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:00:00,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144942854] [2022-01-19 09:00:00,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144942854] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:00:00,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:00:00,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-19 09:00:00,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629329938] [2022-01-19 09:00:00,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:00:00,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-19 09:00:00,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:00:00,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-19 09:00:00,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-19 09:00:00,769 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-01-19 09:00:00,770 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 269 transitions, 2403 flow. Second operand has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 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 09:00:00,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:00:00,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-01-19 09:00:00,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:00:02,745 INFO L129 PetriNetUnfolder]: 7039/14185 cut-off events. [2022-01-19 09:00:02,745 INFO L130 PetriNetUnfolder]: For 107585/107721 co-relation queries the response was YES. [2022-01-19 09:00:02,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 65272 conditions, 14185 events. 7039/14185 cut-off events. For 107585/107721 co-relation queries the response was YES. Maximal size of possible extension queue 717. Compared 124460 event pairs, 725 based on Foata normal form. 165/13643 useless extension candidates. Maximal degree in co-relation 55465. Up to 3064 conditions per place. [2022-01-19 09:00:02,878 INFO L132 encePairwiseOnDemand]: 105/115 looper letters, 330 selfloop transitions, 195 changer transitions 0/595 dead transitions. [2022-01-19 09:00:02,879 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 595 transitions, 7400 flow [2022-01-19 09:00:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-19 09:00:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-01-19 09:00:02,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1455 transitions. [2022-01-19 09:00:02,882 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8434782608695652 [2022-01-19 09:00:02,882 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1455 transitions. [2022-01-19 09:00:02,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1455 transitions. [2022-01-19 09:00:02,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:00:02,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1455 transitions. [2022-01-19 09:00:02,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 97.0) internal successors, (1455), 15 states have internal predecessors, (1455), 0 states have call successors, (0), 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 09:00:02,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 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 09:00:02,921 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 115.0) internal successors, (1840), 16 states have internal predecessors, (1840), 0 states have call successors, (0), 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 09:00:02,921 INFO L186 Difference]: Start difference. First operand has 149 places, 269 transitions, 2403 flow. Second operand 15 states and 1455 transitions. [2022-01-19 09:00:02,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 595 transitions, 7400 flow [2022-01-19 09:00:03,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 595 transitions, 7259 flow, removed 17 selfloop flow, removed 4 redundant places. [2022-01-19 09:00:03,132 INFO L242 Difference]: Finished difference. Result has 171 places, 413 transitions, 5270 flow [2022-01-19 09:00:03,133 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5270, PETRI_PLACES=171, PETRI_TRANSITIONS=413} [2022-01-19 09:00:03,133 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 68 predicate places. [2022-01-19 09:00:03,134 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 413 transitions, 5270 flow [2022-01-19 09:00:03,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 88.0) internal successors, (616), 7 states have internal predecessors, (616), 0 states have call successors, (0), 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 09:00:03,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:00:03,134 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 09:00:03,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-19 09:00:03,134 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 09:00:03,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:00:03,135 INFO L85 PathProgramCache]: Analyzing trace with hash 393902587, now seen corresponding path program 2 times [2022-01-19 09:00:03,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:00:03,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068667288] [2022-01-19 09:00:03,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:00:03,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:00:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:00:03,215 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 09:00:03,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:00:03,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068667288] [2022-01-19 09:00:03,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068667288] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:00:03,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-19 09:00:03,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-19 09:00:03,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804659177] [2022-01-19 09:00:03,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:00:03,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-19 09:00:03,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:00:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-19 09:00:03,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-19 09:00:03,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 115 [2022-01-19 09:00:03,218 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 413 transitions, 5270 flow. Second operand has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:00:03,218 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:00:03,218 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 115 [2022-01-19 09:00:03,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:00:05,390 INFO L129 PetriNetUnfolder]: 7953/14769 cut-off events. [2022-01-19 09:00:05,390 INFO L130 PetriNetUnfolder]: For 180952/181184 co-relation queries the response was YES. [2022-01-19 09:00:05,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 84549 conditions, 14769 events. 7953/14769 cut-off events. For 180952/181184 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 124086 event pairs, 2073 based on Foata normal form. 27/13880 useless extension candidates. Maximal degree in co-relation 72609. Up to 9122 conditions per place. [2022-01-19 09:00:05,528 INFO L132 encePairwiseOnDemand]: 104/115 looper letters, 369 selfloop transitions, 99 changer transitions 9/557 dead transitions. [2022-01-19 09:00:05,528 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 557 transitions, 8362 flow [2022-01-19 09:00:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-19 09:00:05,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-01-19 09:00:05,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 575 transitions. [2022-01-19 09:00:05,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8333333333333334 [2022-01-19 09:00:05,530 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 575 transitions. [2022-01-19 09:00:05,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 575 transitions. [2022-01-19 09:00:05,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:00:05,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 575 transitions. [2022-01-19 09:00:05,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 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 09:00:05,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 09:00:05,532 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 115.0) internal successors, (805), 7 states have internal predecessors, (805), 0 states have call successors, (0), 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 09:00:05,532 INFO L186 Difference]: Start difference. First operand has 171 places, 413 transitions, 5270 flow. Second operand 6 states and 575 transitions. [2022-01-19 09:00:05,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 557 transitions, 8362 flow [2022-01-19 09:00:06,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 557 transitions, 8026 flow, removed 168 selfloop flow, removed 0 redundant places. [2022-01-19 09:00:06,104 INFO L242 Difference]: Finished difference. Result has 180 places, 443 transitions, 5809 flow [2022-01-19 09:00:06,104 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5066, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=413, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5809, PETRI_PLACES=180, PETRI_TRANSITIONS=443} [2022-01-19 09:00:06,104 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 77 predicate places. [2022-01-19 09:00:06,105 INFO L470 AbstractCegarLoop]: Abstraction has has 180 places, 443 transitions, 5809 flow [2022-01-19 09:00:06,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 89.2) internal successors, (446), 5 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-19 09:00:06,105 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:00:06,105 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 09:00:06,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-19 09:00:06,105 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 09:00:06,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:00:06,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1596044119, now seen corresponding path program 3 times [2022-01-19 09:00:06,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:00:06,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17612292] [2022-01-19 09:00:06,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:00:06,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:00:06,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:00:06,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:00:06,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:00:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17612292] [2022-01-19 09:00:06,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17612292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:00:06,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48114101] [2022-01-19 09:00:06,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-19 09:00:06,251 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:00:06,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:00:06,252 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 09:00:06,253 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 09:00:06,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-19 09:00:06,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:00:06,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-19 09:00:06,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-19 09:00:06,612 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 09:00:06,612 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-19 09:00:06,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48114101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-19 09:00:06,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-19 09:00:06,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2022-01-19 09:00:06,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806416303] [2022-01-19 09:00:06,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-19 09:00:06,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-19 09:00:06,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-19 09:00:06,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-19 09:00:06,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-01-19 09:00:06,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 115 [2022-01-19 09:00:06,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 443 transitions, 5809 flow. Second operand has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 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 09:00:06,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-01-19 09:00:06,614 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 115 [2022-01-19 09:00:06,614 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-01-19 09:00:09,785 INFO L129 PetriNetUnfolder]: 10546/18925 cut-off events. [2022-01-19 09:00:09,785 INFO L130 PetriNetUnfolder]: For 257457/257799 co-relation queries the response was YES. [2022-01-19 09:00:09,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 115658 conditions, 18925 events. 10546/18925 cut-off events. For 257457/257799 co-relation queries the response was YES. Maximal size of possible extension queue 1018. Compared 159996 event pairs, 2288 based on Foata normal form. 576/19283 useless extension candidates. Maximal degree in co-relation 101677. Up to 10517 conditions per place. [2022-01-19 09:00:10,011 INFO L132 encePairwiseOnDemand]: 101/115 looper letters, 607 selfloop transitions, 107 changer transitions 3/785 dead transitions. [2022-01-19 09:00:10,011 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 785 transitions, 12170 flow [2022-01-19 09:00:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-19 09:00:10,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-01-19 09:00:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1032 transitions. [2022-01-19 09:00:10,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6903010033444816 [2022-01-19 09:00:10,020 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1032 transitions. [2022-01-19 09:00:10,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1032 transitions. [2022-01-19 09:00:10,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-01-19 09:00:10,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1032 transitions. [2022-01-19 09:00:10,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.38461538461539) internal successors, (1032), 13 states have internal predecessors, (1032), 0 states have call successors, (0), 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 09:00:10,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 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 09:00:10,025 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 115.0) internal successors, (1610), 14 states have internal predecessors, (1610), 0 states have call successors, (0), 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 09:00:10,025 INFO L186 Difference]: Start difference. First operand has 180 places, 443 transitions, 5809 flow. Second operand 13 states and 1032 transitions. [2022-01-19 09:00:10,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 785 transitions, 12170 flow [2022-01-19 09:00:10,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 785 transitions, 11943 flow, removed 26 selfloop flow, removed 1 redundant places. [2022-01-19 09:00:10,728 INFO L242 Difference]: Finished difference. Result has 198 places, 511 transitions, 6996 flow [2022-01-19 09:00:10,728 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=115, PETRI_DIFFERENCE_MINUEND_FLOW=5517, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=6996, PETRI_PLACES=198, PETRI_TRANSITIONS=511} [2022-01-19 09:00:10,728 INFO L334 CegarLoopForPetriNet]: 103 programPoint places, 95 predicate places. [2022-01-19 09:00:10,728 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 511 transitions, 6996 flow [2022-01-19 09:00:10,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 74.3) internal successors, (743), 10 states have internal predecessors, (743), 0 states have call successors, (0), 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 09:00:10,729 INFO L246 CegarLoopForPetriNet]: Found error trace [2022-01-19 09:00:10,729 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 09:00:10,745 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 09:00:10,933 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 09:00:10,933 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-19 09:00:10,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-19 09:00:10,933 INFO L85 PathProgramCache]: Analyzing trace with hash 209813985, now seen corresponding path program 4 times [2022-01-19 09:00:10,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-19 09:00:10,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216385774] [2022-01-19 09:00:10,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-19 09:00:10,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-19 09:00:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-19 09:00:12,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-19 09:00:12,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-19 09:00:12,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216385774] [2022-01-19 09:00:12,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216385774] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-19 09:00:12,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471581807] [2022-01-19 09:00:12,778 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-19 09:00:12,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:00:12,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-19 09:00:12,779 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 09:00:12,779 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 09:00:12,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-19 09:00:12,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-19 09:00:12,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 39 conjunts are in the unsatisfiable core [2022-01-19 09:00:12,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2022-01-19 09:14:15,405 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 09:14:15,406 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-19 09:14:15,435 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-19 09:14:15,437 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-19 09:14:15,453 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 09:14:15,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-19 09:14:15,638 WARN L594 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. [2022-01-19 09:14:15,639 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-19 09:14:15,639 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-19 09:14:15,639 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-19 09:14:15,642 INFO L732 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1] [2022-01-19 09:14:15,643 INFO L230 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-19 09:14:15,643 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-19 09:14:15,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.01 09:14:15 BasicIcfg [2022-01-19 09:14:15,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-19 09:14:15,645 INFO L158 Benchmark]: Toolchain (without parser) took 860321.28ms. Allocated memory was 383.8MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 331.5MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2022-01-19 09:14:15,646 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 383.8MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 09:14:15,646 INFO L158 Benchmark]: CACSL2BoogieTranslator took 218.22ms. Allocated memory is still 383.8MB. Free memory was 331.3MB in the beginning and 355.6MB in the end (delta: -24.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. [2022-01-19 09:14:15,646 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.99ms. Allocated memory is still 383.8MB. Free memory was 355.6MB in the beginning and 354.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-19 09:14:15,646 INFO L158 Benchmark]: Boogie Preprocessor took 15.77ms. Allocated memory is still 383.8MB. Free memory was 354.2MB in the beginning and 352.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-19 09:14:15,647 INFO L158 Benchmark]: RCFGBuilder took 335.80ms. Allocated memory is still 383.8MB. Free memory was 352.5MB in the beginning and 336.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2022-01-19 09:14:15,647 INFO L158 Benchmark]: TraceAbstraction took 859718.54ms. Allocated memory was 383.8MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 336.3MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 2.9GB. Max. memory is 16.0GB. [2022-01-19 09:14:15,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 383.8MB. Free memory is still 347.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 218.22ms. Allocated memory is still 383.8MB. Free memory was 331.3MB in the beginning and 355.6MB in the end (delta: -24.3MB). Peak memory consumption was 17.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.99ms. Allocated memory is still 383.8MB. Free memory was 355.6MB in the beginning and 354.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 15.77ms. Allocated memory is still 383.8MB. Free memory was 354.2MB in the beginning and 352.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 335.80ms. Allocated memory is still 383.8MB. Free memory was 352.5MB in the beginning and 336.9MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 859718.54ms. Allocated memory was 383.8MB in the beginning and 4.7GB in the end (delta: 4.3GB). Free memory was 336.3MB in the beginning and 1.7GB in the end (delta: -1.4GB). Peak memory consumption was 2.9GB. 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: 118]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 112]: 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 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 111]: 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 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - TimeoutResultAtElement [Line: 110]: 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 92 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 37ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 133 locations, 4 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: 859.6s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 11.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 725 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 725 mSDsluCounter, 447 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 642 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1480 IncrementalHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 133 mSDtfsCounter, 1480 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 367 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6996occurred in iteration=7, InterpolantAutomatonStates: 78, 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: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 798 NumberOfCodeBlocks, 798 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 875 ConstructedInterpolants, 0 QuantifiedInterpolants, 4680 SizeOfPredicates, 23 NumberOfNonLiveVariables, 439 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 9/13 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