/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/indexer.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 17:20:41,232 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 17:20:41,234 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 17:20:41,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 17:20:41,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 17:20:41,301 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 17:20:41,302 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 17:20:41,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 17:20:41,307 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 17:20:41,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 17:20:41,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 17:20:41,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 17:20:41,314 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 17:20:41,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 17:20:41,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 17:20:41,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 17:20:41,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 17:20:41,321 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 17:20:41,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 17:20:41,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 17:20:41,329 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 17:20:41,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 17:20:41,332 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 17:20:41,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 17:20:41,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 17:20:41,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 17:20:41,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 17:20:41,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 17:20:41,349 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 17:20:41,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 17:20:41,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 17:20:41,366 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 17:20:41,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 17:20:41,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 17:20:41,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 17:20:41,366 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 17:20:41,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 17:20:41,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 17:20:41,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 17:20:41,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 17:20:41,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 17:20:41,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 17:20:41,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 17:20:41,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 17:20:41,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:41,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 17:20:41,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 17:20:41,370 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 17:20:41,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 17:20:41,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 17:20:41,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 17:20:41,648 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-15 17:20:41,648 INFO L275 PluginConnector]: CDTParser initialized [2022-03-15 17:20:41,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/indexer.i [2022-03-15 17:20:41,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7896405cf/47f8d45bb7a64521817bf2418d018f27/FLAG9dddab039 [2022-03-15 17:20:42,229 INFO L306 CDTParser]: Found 1 translation units. [2022-03-15 17:20:42,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i [2022-03-15 17:20:42,248 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7896405cf/47f8d45bb7a64521817bf2418d018f27/FLAG9dddab039 [2022-03-15 17:20:42,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7896405cf/47f8d45bb7a64521817bf2418d018f27 [2022-03-15 17:20:42,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 17:20:42,529 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-15 17:20:42,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:42,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-15 17:20:42,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-15 17:20:42,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:42" (1/1) ... [2022-03-15 17:20:42,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67155052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:42, skipping insertion in model container [2022-03-15 17:20:42,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.03 05:20:42" (1/1) ... [2022-03-15 17:20:42,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-15 17:20:42,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-15 17:20:42,893 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i[47556,47569] [2022-03-15 17:20:42,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:42,942 INFO L203 MainTranslator]: Completed pre-run [2022-03-15 17:20:42,976 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/indexer.i[47556,47569] [2022-03-15 17:20:42,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-15 17:20:43,026 INFO L208 MainTranslator]: Completed translation [2022-03-15 17:20:43,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43 WrapperNode [2022-03-15 17:20:43,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-15 17:20:43,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:43,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 17:20:43,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 17:20:43,034 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,069 INFO L137 Inliner]: procedures = 269, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 114 [2022-03-15 17:20:43,070 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 17:20:43,071 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 17:20:43,071 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 17:20:43,071 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 17:20:43,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 17:20:43,127 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 17:20:43,128 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 17:20:43,128 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 17:20:43,130 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (1/1) ... [2022-03-15 17:20:43,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 17:20:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:43,156 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) [2022-03-15 17:20:43,166 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 [2022-03-15 17:20:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-15 17:20:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-15 17:20:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-15 17:20:43,194 INFO L130 BoogieDeclarations]: Found specification of procedure thread_routine [2022-03-15 17:20:43,195 INFO L138 BoogieDeclarations]: Found implementation of procedure thread_routine [2022-03-15 17:20:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-15 17:20:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-03-15 17:20:43,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-15 17:20:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-15 17:20:43,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 17:20:43,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 17:20:43,199 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 17:20:43,363 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 17:20:43,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 17:20:43,606 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 17:20:43,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 17:20:43,613 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-03-15 17:20:43,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:43 BoogieIcfgContainer [2022-03-15 17:20:43,615 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 17:20:43,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 17:20:43,616 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 17:20:43,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 17:20:43,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.03 05:20:42" (1/3) ... [2022-03-15 17:20:43,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce381d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:20:43, skipping insertion in model container [2022-03-15 17:20:43,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.03 05:20:43" (2/3) ... [2022-03-15 17:20:43,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ce381d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 05:20:43, skipping insertion in model container [2022-03-15 17:20:43,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 05:20:43" (3/3) ... [2022-03-15 17:20:43,622 INFO L111 eAbstractionObserver]: Analyzing ICFG indexer.i [2022-03-15 17:20:43,626 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 17:20:43,626 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 17:20:43,626 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 17:20:43,627 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 17:20:43,671 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,672 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,672 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,672 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,672 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,672 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#in~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,673 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,673 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,674 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,676 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,677 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,678 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,678 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,678 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,678 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,678 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,679 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,681 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,681 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,682 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,682 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,682 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,682 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,682 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,682 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,683 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,684 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,685 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,685 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,685 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,685 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,685 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,685 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,686 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,686 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,686 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,686 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,687 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,687 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,688 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,689 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,689 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,689 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,689 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,689 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,690 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,690 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,690 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,690 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,690 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,691 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,691 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,691 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,696 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,696 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,696 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,696 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,696 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,697 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,698 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,699 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,700 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,701 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,702 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,703 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,704 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,704 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,704 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,704 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,704 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,704 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,705 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,706 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,706 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,706 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,707 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,708 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,708 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,711 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~nondet3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~pre6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~tid~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~h~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,712 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~m~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#in~new_val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~val#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~w~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~mem5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_#t~ret7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_~arg#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,713 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~h#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,714 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,714 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,714 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~ret_val~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,714 WARN L322 ript$VariableManager]: TermVariabe |thread_routineThread1of1ForFork0_cas_~tab#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-03-15 17:20:43,717 INFO L148 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-03-15 17:20:43,754 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 17:20:43,759 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 17:20:43,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-03-15 17:20:43,770 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 17:20:43,777 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 111 places, 122 transitions, 252 flow [2022-03-15 17:20:43,779 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 111 places, 122 transitions, 252 flow [2022-03-15 17:20:43,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 111 places, 122 transitions, 252 flow [2022-03-15 17:20:43,839 INFO L129 PetriNetUnfolder]: 18/146 cut-off events. [2022-03-15 17:20:43,839 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-03-15 17:20:43,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 152 conditions, 146 events. 18/146 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 223 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2022-03-15 17:20:43,850 INFO L116 LiptonReduction]: Number of co-enabled transitions 3240 [2022-03-15 17:20:46,659 INFO L131 LiptonReduction]: Checked pairs total: 2929 [2022-03-15 17:20:46,659 INFO L133 LiptonReduction]: Total number of compositions: 118 [2022-03-15 17:20:46,666 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 23 transitions, 54 flow [2022-03-15 17:20:46,681 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 55 states, 51 states have (on average 2.411764705882353) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:46,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 51 states have (on average 2.411764705882353) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:46,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-03-15 17:20:46,687 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:46,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:46,688 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:46,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:46,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1482774588, now seen corresponding path program 1 times [2022-03-15 17:20:46,707 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:46,708 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684369081] [2022-03-15 17:20:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:46,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:46,847 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:46,848 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684369081] [2022-03-15 17:20:46,848 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684369081] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:20:46,848 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 17:20:46,848 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-03-15 17:20:46,849 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [418877086] [2022-03-15 17:20:46,850 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:46,852 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:46,860 INFO L252 McrAutomatonBuilder]: Finished intersection with 8 states and 7 transitions. [2022-03-15 17:20:46,860 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:46,863 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:46,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 17:20:46,864 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:46,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 17:20:46,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:46,881 INFO L87 Difference]: Start difference. First operand has 55 states, 51 states have (on average 2.411764705882353) internal successors, (123), 54 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:46,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:46,923 INFO L93 Difference]: Finished difference Result 46 states and 88 transitions. [2022-03-15 17:20:46,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 17:20:46,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-03-15 17:20:46,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:46,932 INFO L225 Difference]: With dead ends: 46 [2022-03-15 17:20:46,932 INFO L226 Difference]: Without dead ends: 46 [2022-03-15 17:20:46,933 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 17:20:46,937 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:46,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:46,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-15 17:20:46,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-03-15 17:20:46,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 2.046511627906977) internal successors, (88), 45 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 88 transitions. [2022-03-15 17:20:46,974 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 88 transitions. Word has length 7 [2022-03-15 17:20:46,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:46,974 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 88 transitions. [2022-03-15 17:20:46,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:46,975 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 88 transitions. [2022-03-15 17:20:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-03-15 17:20:46,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:46,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:46,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 17:20:46,977 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:46,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:46,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1446326303, now seen corresponding path program 1 times [2022-03-15 17:20:46,980 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:46,980 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154670046] [2022-03-15 17:20:46,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:46,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:47,056 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:47,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154670046] [2022-03-15 17:20:47,056 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154670046] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:47,056 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776049890] [2022-03-15 17:20:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:47,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:47,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:47,060 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) [2022-03-15 17:20:47,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-15 17:20:47,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:47,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-03-15 17:20:47,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:47,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:47,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:47,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:47,272 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776049890] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:47,272 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:47,272 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-03-15 17:20:47,273 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1439005273] [2022-03-15 17:20:47,273 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:47,274 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:47,275 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2022-03-15 17:20:47,275 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:47,276 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:47,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 17:20:47,276 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:47,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 17:20:47,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:47,277 INFO L87 Difference]: Start difference. First operand 46 states and 88 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:47,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:47,315 INFO L93 Difference]: Finished difference Result 37 states and 67 transitions. [2022-03-15 17:20:47,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-15 17:20:47,317 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-03-15 17:20:47,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:47,318 INFO L225 Difference]: With dead ends: 37 [2022-03-15 17:20:47,318 INFO L226 Difference]: Without dead ends: 37 [2022-03-15 17:20:47,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-03-15 17:20:47,321 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 30 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:47,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:47,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-15 17:20:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-15 17:20:47,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.9142857142857144) internal successors, (67), 36 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 67 transitions. [2022-03-15 17:20:47,326 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 67 transitions. Word has length 8 [2022-03-15 17:20:47,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:47,326 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 67 transitions. [2022-03-15 17:20:47,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:47,326 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 67 transitions. [2022-03-15 17:20:47,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-15 17:20:47,327 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:47,327 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 17:20:47,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:47,542 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 [2022-03-15 17:20:47,543 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash 316429468, now seen corresponding path program 2 times [2022-03-15 17:20:47,544 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:47,544 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147434482] [2022-03-15 17:20:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:47,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:47,599 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 17:20:47,600 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:47,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147434482] [2022-03-15 17:20:47,600 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147434482] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:47,600 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287534457] [2022-03-15 17:20:47,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:47,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:47,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:47,611 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) [2022-03-15 17:20:47,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-15 17:20:47,673 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-15 17:20:47,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:47,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-15 17:20:47,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:47,724 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-03-15 17:20:47,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-03-15 17:20:47,786 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-03-15 17:20:47,812 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-03-15 17:20:47,871 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-03-15 17:20:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:47,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-15 17:20:47,882 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287534457] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 17:20:47,882 INFO L191 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-03-15 17:20:47,883 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 10 [2022-03-15 17:20:47,883 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1509891184] [2022-03-15 17:20:47,883 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:47,883 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:47,885 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2022-03-15 17:20:47,885 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:47,885 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:47,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:20:47,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:20:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:47,886 INFO L87 Difference]: Start difference. First operand 37 states and 67 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:48,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:48,065 INFO L93 Difference]: Finished difference Result 64 states and 122 transitions. [2022-03-15 17:20:48,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:20:48,066 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-03-15 17:20:48,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:48,068 INFO L225 Difference]: With dead ends: 64 [2022-03-15 17:20:48,068 INFO L226 Difference]: Without dead ends: 64 [2022-03-15 17:20:48,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-03-15 17:20:48,069 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 42 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:48,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 6 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:20:48,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-15 17:20:48,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 32. [2022-03-15 17:20:48,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.8709677419354838) internal successors, (58), 31 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:48,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 58 transitions. [2022-03-15 17:20:48,075 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 58 transitions. Word has length 9 [2022-03-15 17:20:48,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:48,075 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 58 transitions. [2022-03-15 17:20:48,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:48,075 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 58 transitions. [2022-03-15 17:20:48,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-15 17:20:48,076 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:48,076 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:48,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:48,279 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,SelfDestructingSolverStorable2 [2022-03-15 17:20:48,280 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash -853849970, now seen corresponding path program 1 times [2022-03-15 17:20:48,281 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:48,281 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022002552] [2022-03-15 17:20:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:48,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:48,339 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:48,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022002552] [2022-03-15 17:20:48,339 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022002552] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:48,339 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776376992] [2022-03-15 17:20:48,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:48,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:48,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:48,340 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) [2022-03-15 17:20:48,370 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-15 17:20:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:48,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-15 17:20:48,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:48,441 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:48,480 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776376992] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:48,480 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:48,480 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2022-03-15 17:20:48,480 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [232215735] [2022-03-15 17:20:48,480 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:48,481 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:48,483 INFO L252 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2022-03-15 17:20:48,483 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:48,484 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:48,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-15 17:20:48,484 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:48,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-15 17:20:48,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:48,485 INFO L87 Difference]: Start difference. First operand 32 states and 58 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:48,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:48,513 INFO L93 Difference]: Finished difference Result 33 states and 59 transitions. [2022-03-15 17:20:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-15 17:20:48,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-03-15 17:20:48,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:48,514 INFO L225 Difference]: With dead ends: 33 [2022-03-15 17:20:48,514 INFO L226 Difference]: Without dead ends: 33 [2022-03-15 17:20:48,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-03-15 17:20:48,515 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:48,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:48,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-15 17:20:48,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-15 17:20:48,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.84375) internal successors, (59), 32 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:48,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 59 transitions. [2022-03-15 17:20:48,519 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 59 transitions. Word has length 11 [2022-03-15 17:20:48,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:48,519 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 59 transitions. [2022-03-15 17:20:48,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:48,520 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 59 transitions. [2022-03-15 17:20:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-15 17:20:48,520 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:48,520 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:48,546 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:48,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:48,740 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:48,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:48,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1951762703, now seen corresponding path program 2 times [2022-03-15 17:20:48,742 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:48,742 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360178843] [2022-03-15 17:20:48,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:48,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:48,830 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:48,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360178843] [2022-03-15 17:20:48,830 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360178843] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:48,830 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162148788] [2022-03-15 17:20:48,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:48,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:48,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:48,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:48,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-15 17:20:48,900 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:48,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:48,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-15 17:20:48,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:48,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:48,984 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162148788] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:48,984 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:48,984 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-03-15 17:20:48,984 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1609967278] [2022-03-15 17:20:48,985 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:48,986 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:49,006 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 12 transitions. [2022-03-15 17:20:49,006 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:49,006 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:49,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-15 17:20:49,007 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:49,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-15 17:20:49,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:49,007 INFO L87 Difference]: Start difference. First operand 33 states and 59 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:49,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:49,041 INFO L93 Difference]: Finished difference Result 34 states and 60 transitions. [2022-03-15 17:20:49,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-15 17:20:49,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-03-15 17:20:49,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:49,042 INFO L225 Difference]: With dead ends: 34 [2022-03-15 17:20:49,042 INFO L226 Difference]: Without dead ends: 34 [2022-03-15 17:20:49,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2022-03-15 17:20:49,043 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:49,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:49,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-15 17:20:49,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-15 17:20:49,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 33 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:49,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 60 transitions. [2022-03-15 17:20:49,046 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 60 transitions. Word has length 12 [2022-03-15 17:20:49,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:49,046 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 60 transitions. [2022-03-15 17:20:49,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:49,047 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 60 transitions. [2022-03-15 17:20:49,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-15 17:20:49,047 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:49,047 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:49,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:49,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:49,272 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:49,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:49,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1627319058, now seen corresponding path program 3 times [2022-03-15 17:20:49,273 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:49,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468806237] [2022-03-15 17:20:49,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:49,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:49,327 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:49,327 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:49,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468806237] [2022-03-15 17:20:49,327 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468806237] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:49,327 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300070460] [2022-03-15 17:20:49,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:49,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:49,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:49,329 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:49,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-03-15 17:20:49,409 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-03-15 17:20:49,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:49,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-15 17:20:49,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:49,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:49,508 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300070460] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:49,508 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:49,508 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-03-15 17:20:49,508 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [489829581] [2022-03-15 17:20:49,508 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:49,509 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:49,510 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 13 transitions. [2022-03-15 17:20:49,510 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:49,510 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:49,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-15 17:20:49,511 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-15 17:20:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:49,511 INFO L87 Difference]: Start difference. First operand 34 states and 60 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:49,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:49,541 INFO L93 Difference]: Finished difference Result 35 states and 61 transitions. [2022-03-15 17:20:49,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-15 17:20:49,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-03-15 17:20:49,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:49,542 INFO L225 Difference]: With dead ends: 35 [2022-03-15 17:20:49,542 INFO L226 Difference]: Without dead ends: 35 [2022-03-15 17:20:49,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-03-15 17:20:49,543 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:49,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-03-15 17:20:49,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2022-03-15 17:20:49,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 34 states have (on average 1.7941176470588236) internal successors, (61), 34 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 61 transitions. [2022-03-15 17:20:49,546 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 61 transitions. Word has length 13 [2022-03-15 17:20:49,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:49,547 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 61 transitions. [2022-03-15 17:20:49,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:49,547 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 61 transitions. [2022-03-15 17:20:49,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-15 17:20:49,547 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:49,547 INFO L514 BasicCegarLoop]: trace histogram [5, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:49,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:49,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:49,748 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:49,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:49,749 INFO L85 PathProgramCache]: Analyzing trace with hash -159500655, now seen corresponding path program 4 times [2022-03-15 17:20:49,750 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:49,750 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137135713] [2022-03-15 17:20:49,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:49,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:49,827 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:49,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:49,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137135713] [2022-03-15 17:20:49,828 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137135713] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:49,828 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460663763] [2022-03-15 17:20:49,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:49,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:49,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:49,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:49,851 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-03-15 17:20:49,913 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:49,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:49,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-15 17:20:49,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:49,944 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:49,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:50,014 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:50,014 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460663763] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:50,015 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:50,015 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-03-15 17:20:50,015 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1599344076] [2022-03-15 17:20:50,015 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:50,018 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:50,020 INFO L252 McrAutomatonBuilder]: Finished intersection with 15 states and 14 transitions. [2022-03-15 17:20:50,020 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:50,021 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:50,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-15 17:20:50,021 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-15 17:20:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:50,022 INFO L87 Difference]: Start difference. First operand 35 states and 61 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:50,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:50,056 INFO L93 Difference]: Finished difference Result 36 states and 62 transitions. [2022-03-15 17:20:50,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-15 17:20:50,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-03-15 17:20:50,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:50,057 INFO L225 Difference]: With dead ends: 36 [2022-03-15 17:20:50,057 INFO L226 Difference]: Without dead ends: 36 [2022-03-15 17:20:50,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2022-03-15 17:20:50,058 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:50,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-03-15 17:20:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-03-15 17:20:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 35 states have (on average 1.7714285714285714) internal successors, (62), 35 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:50,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 62 transitions. [2022-03-15 17:20:50,061 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 62 transitions. Word has length 14 [2022-03-15 17:20:50,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:50,061 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 62 transitions. [2022-03-15 17:20:50,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:50,061 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 62 transitions. [2022-03-15 17:20:50,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-15 17:20:50,062 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:50,062 INFO L514 BasicCegarLoop]: trace histogram [6, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:50,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:50,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:50,276 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:50,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:50,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1901770418, now seen corresponding path program 5 times [2022-03-15 17:20:50,277 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:50,277 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987253360] [2022-03-15 17:20:50,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:50,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:50,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:50,341 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:50,341 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:50,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987253360] [2022-03-15 17:20:50,341 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987253360] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:50,341 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758727382] [2022-03-15 17:20:50,341 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:50,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:50,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:50,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:50,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-03-15 17:20:50,429 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-03-15 17:20:50,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:50,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 8 conjunts are in the unsatisfiable core [2022-03-15 17:20:50,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:50,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:50,579 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:50,579 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758727382] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:50,579 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:50,579 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-03-15 17:20:50,580 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1710070686] [2022-03-15 17:20:50,580 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:50,581 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:50,583 INFO L252 McrAutomatonBuilder]: Finished intersection with 16 states and 15 transitions. [2022-03-15 17:20:50,583 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:50,583 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:50,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-15 17:20:50,584 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:50,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-15 17:20:50,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:50,584 INFO L87 Difference]: Start difference. First operand 36 states and 62 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:50,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:50,615 INFO L93 Difference]: Finished difference Result 37 states and 63 transitions. [2022-03-15 17:20:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-15 17:20:50,615 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-03-15 17:20:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:50,616 INFO L225 Difference]: With dead ends: 37 [2022-03-15 17:20:50,616 INFO L226 Difference]: Without dead ends: 37 [2022-03-15 17:20:50,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-03-15 17:20:50,617 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:50,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:50,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-15 17:20:50,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-15 17:20:50,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.75) internal successors, (63), 36 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:50,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 63 transitions. [2022-03-15 17:20:50,619 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 63 transitions. Word has length 15 [2022-03-15 17:20:50,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:50,620 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 63 transitions. [2022-03-15 17:20:50,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 8 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:50,620 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 63 transitions. [2022-03-15 17:20:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-15 17:20:50,620 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:50,620 INFO L514 BasicCegarLoop]: trace histogram [7, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:50,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:50,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:50,840 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:50,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:50,840 INFO L85 PathProgramCache]: Analyzing trace with hash -77558223, now seen corresponding path program 6 times [2022-03-15 17:20:50,841 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:50,841 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490633900] [2022-03-15 17:20:50,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:50,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:50,921 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:50,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490633900] [2022-03-15 17:20:50,922 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490633900] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:50,922 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858425780] [2022-03-15 17:20:50,922 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:50,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:50,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:50,923 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:50,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-03-15 17:20:51,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-03-15 17:20:51,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:51,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-15 17:20:51,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:51,064 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:51,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:51,198 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:51,198 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858425780] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:51,198 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:51,198 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2022-03-15 17:20:51,200 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2098526135] [2022-03-15 17:20:51,200 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:51,202 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:51,204 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 16 transitions. [2022-03-15 17:20:51,204 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:51,204 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:51,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-03-15 17:20:51,204 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:51,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-03-15 17:20:51,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2022-03-15 17:20:51,205 INFO L87 Difference]: Start difference. First operand 37 states and 63 transitions. Second operand has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:51,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:51,239 INFO L93 Difference]: Finished difference Result 38 states and 64 transitions. [2022-03-15 17:20:51,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-03-15 17:20:51,239 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-03-15 17:20:51,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:51,241 INFO L225 Difference]: With dead ends: 38 [2022-03-15 17:20:51,241 INFO L226 Difference]: Without dead ends: 38 [2022-03-15 17:20:51,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2022-03-15 17:20:51,242 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:51,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:51,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-15 17:20:51,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-03-15 17:20:51,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.7297297297297298) internal successors, (64), 37 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 64 transitions. [2022-03-15 17:20:51,248 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 64 transitions. Word has length 16 [2022-03-15 17:20:51,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:51,248 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 64 transitions. [2022-03-15 17:20:51,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 1.4) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:51,248 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 64 transitions. [2022-03-15 17:20:51,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-15 17:20:51,249 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:51,249 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:51,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:51,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-03-15 17:20:51,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:51,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:51,467 INFO L85 PathProgramCache]: Analyzing trace with hash 638444974, now seen corresponding path program 7 times [2022-03-15 17:20:51,480 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:51,481 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92919479] [2022-03-15 17:20:51,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:51,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:51,570 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:51,570 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:51,570 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92919479] [2022-03-15 17:20:51,570 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92919479] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:51,571 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634989472] [2022-03-15 17:20:51,571 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:20:51,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:51,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:51,576 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:51,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-03-15 17:20:51,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:51,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-15 17:20:51,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:51,693 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:51,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:51,844 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:51,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634989472] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:51,845 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:51,845 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2022-03-15 17:20:51,845 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [638126488] [2022-03-15 17:20:51,845 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:51,848 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:51,851 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 17 transitions. [2022-03-15 17:20:51,851 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:51,851 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:51,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-15 17:20:51,851 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:51,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-15 17:20:51,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2022-03-15 17:20:51,852 INFO L87 Difference]: Start difference. First operand 38 states and 64 transitions. Second operand has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:51,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:51,892 INFO L93 Difference]: Finished difference Result 39 states and 65 transitions. [2022-03-15 17:20:51,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-15 17:20:51,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-03-15 17:20:51,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:51,893 INFO L225 Difference]: With dead ends: 39 [2022-03-15 17:20:51,893 INFO L226 Difference]: Without dead ends: 39 [2022-03-15 17:20:51,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2022-03-15 17:20:51,894 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:51,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:51,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-03-15 17:20:51,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2022-03-15 17:20:51,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.7105263157894737) internal successors, (65), 38 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:51,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 65 transitions. [2022-03-15 17:20:51,897 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 65 transitions. Word has length 17 [2022-03-15 17:20:51,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:51,897 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 65 transitions. [2022-03-15 17:20:51,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:51,897 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 65 transitions. [2022-03-15 17:20:51,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-15 17:20:51,898 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:51,898 INFO L514 BasicCegarLoop]: trace histogram [9, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:51,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:52,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-03-15 17:20:52,106 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:52,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:52,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1359707601, now seen corresponding path program 8 times [2022-03-15 17:20:52,107 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:52,107 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264864172] [2022-03-15 17:20:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:52,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:52,237 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:52,237 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:52,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264864172] [2022-03-15 17:20:52,237 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264864172] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:52,237 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1136936197] [2022-03-15 17:20:52,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:52,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:52,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:52,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:52,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-03-15 17:20:52,338 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:52,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:52,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 11 conjunts are in the unsatisfiable core [2022-03-15 17:20:52,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:52,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:52,542 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1136936197] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:52,542 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:52,542 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-03-15 17:20:52,542 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1895107996] [2022-03-15 17:20:52,542 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:52,545 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:52,548 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 18 transitions. [2022-03-15 17:20:52,548 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:52,548 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:52,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-15 17:20:52,548 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-15 17:20:52,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 17:20:52,549 INFO L87 Difference]: Start difference. First operand 39 states and 65 transitions. Second operand has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:52,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:52,587 INFO L93 Difference]: Finished difference Result 40 states and 66 transitions. [2022-03-15 17:20:52,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-15 17:20:52,588 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-03-15 17:20:52,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:52,588 INFO L225 Difference]: With dead ends: 40 [2022-03-15 17:20:52,588 INFO L226 Difference]: Without dead ends: 40 [2022-03-15 17:20:52,588 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=253, Invalid=253, Unknown=0, NotChecked=0, Total=506 [2022-03-15 17:20:52,589 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:52,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:52,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-15 17:20:52,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-03-15 17:20:52,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.6923076923076923) internal successors, (66), 39 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:52,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 66 transitions. [2022-03-15 17:20:52,592 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 66 transitions. Word has length 18 [2022-03-15 17:20:52,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:52,592 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 66 transitions. [2022-03-15 17:20:52,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:52,592 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 66 transitions. [2022-03-15 17:20:52,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-03-15 17:20:52,592 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:52,592 INFO L514 BasicCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:52,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:52,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-03-15 17:20:52,820 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:52,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:52,820 INFO L85 PathProgramCache]: Analyzing trace with hash -2050954738, now seen corresponding path program 9 times [2022-03-15 17:20:52,821 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:52,821 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730288954] [2022-03-15 17:20:52,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:52,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:52,939 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:52,939 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:52,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730288954] [2022-03-15 17:20:52,940 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730288954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:52,940 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960906436] [2022-03-15 17:20:52,940 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:52,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:52,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:52,941 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:52,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-03-15 17:20:53,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-03-15 17:20:53,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:53,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 12 conjunts are in the unsatisfiable core [2022-03-15 17:20:53,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:53,123 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:53,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:53,319 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960906436] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:53,319 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:53,319 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2022-03-15 17:20:53,319 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1125560018] [2022-03-15 17:20:53,320 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:53,321 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:53,325 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 19 transitions. [2022-03-15 17:20:53,325 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:53,326 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:53,326 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-15 17:20:53,326 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:53,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-15 17:20:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-03-15 17:20:53,327 INFO L87 Difference]: Start difference. First operand 40 states and 66 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:53,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:53,367 INFO L93 Difference]: Finished difference Result 41 states and 67 transitions. [2022-03-15 17:20:53,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-03-15 17:20:53,367 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-03-15 17:20:53,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:53,368 INFO L225 Difference]: With dead ends: 41 [2022-03-15 17:20:53,368 INFO L226 Difference]: Without dead ends: 41 [2022-03-15 17:20:53,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-03-15 17:20:53,369 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 90 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:53,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:53,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-03-15 17:20:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-03-15 17:20:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.675) internal successors, (67), 40 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:53,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 67 transitions. [2022-03-15 17:20:53,372 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 67 transitions. Word has length 19 [2022-03-15 17:20:53,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:53,372 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 67 transitions. [2022-03-15 17:20:53,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:53,372 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 67 transitions. [2022-03-15 17:20:53,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-15 17:20:53,372 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:53,372 INFO L514 BasicCegarLoop]: trace histogram [11, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:53,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:53,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-03-15 17:20:53,599 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:53,600 INFO L85 PathProgramCache]: Analyzing trace with hash -407304847, now seen corresponding path program 10 times [2022-03-15 17:20:53,600 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:53,601 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709234617] [2022-03-15 17:20:53,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:53,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:53,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:53,721 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:53,721 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:53,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709234617] [2022-03-15 17:20:53,721 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709234617] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:53,721 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461396008] [2022-03-15 17:20:53,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:53,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:53,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:53,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-03-15 17:20:53,820 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:53,820 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:53,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2022-03-15 17:20:53,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:53,877 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:53,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:54,112 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:54,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461396008] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:54,112 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:54,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-03-15 17:20:54,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1357707637] [2022-03-15 17:20:54,112 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:54,115 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:54,119 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 20 transitions. [2022-03-15 17:20:54,119 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:54,119 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:54,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-03-15 17:20:54,119 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:54,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-03-15 17:20:54,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-03-15 17:20:54,120 INFO L87 Difference]: Start difference. First operand 41 states and 67 transitions. Second operand has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:54,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:54,161 INFO L93 Difference]: Finished difference Result 42 states and 68 transitions. [2022-03-15 17:20:54,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-15 17:20:54,161 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-03-15 17:20:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:54,163 INFO L225 Difference]: With dead ends: 42 [2022-03-15 17:20:54,163 INFO L226 Difference]: Without dead ends: 42 [2022-03-15 17:20:54,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2022-03-15 17:20:54,164 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 99 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:54,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 2 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:54,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-03-15 17:20:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-03-15 17:20:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.6585365853658536) internal successors, (68), 41 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 68 transitions. [2022-03-15 17:20:54,170 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 68 transitions. Word has length 20 [2022-03-15 17:20:54,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:54,170 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 68 transitions. [2022-03-15 17:20:54,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 13 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:54,170 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 68 transitions. [2022-03-15 17:20:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-03-15 17:20:54,172 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:54,172 INFO L514 BasicCegarLoop]: trace histogram [12, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:54,190 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-03-15 17:20:54,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-03-15 17:20:54,379 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:54,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:54,380 INFO L85 PathProgramCache]: Analyzing trace with hash -993765778, now seen corresponding path program 11 times [2022-03-15 17:20:54,383 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:54,384 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281688362] [2022-03-15 17:20:54,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:54,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:54,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:54,519 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:54,519 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:54,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281688362] [2022-03-15 17:20:54,520 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281688362] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:54,520 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009567827] [2022-03-15 17:20:54,520 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:20:54,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:54,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:54,521 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:54,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-03-15 17:20:54,686 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2022-03-15 17:20:54,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:54,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 14 conjunts are in the unsatisfiable core [2022-03-15 17:20:54,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:54,729 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:54,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:54,974 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:54,975 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009567827] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:54,975 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:54,975 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 28 [2022-03-15 17:20:54,975 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [796141679] [2022-03-15 17:20:54,975 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:54,977 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:54,980 INFO L252 McrAutomatonBuilder]: Finished intersection with 22 states and 21 transitions. [2022-03-15 17:20:54,981 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:54,981 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:54,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-15 17:20:54,981 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:54,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-15 17:20:54,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2022-03-15 17:20:54,982 INFO L87 Difference]: Start difference. First operand 42 states and 68 transitions. Second operand has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:55,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:55,016 INFO L93 Difference]: Finished difference Result 43 states and 69 transitions. [2022-03-15 17:20:55,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-15 17:20:55,017 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-03-15 17:20:55,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:55,017 INFO L225 Difference]: With dead ends: 43 [2022-03-15 17:20:55,017 INFO L226 Difference]: Without dead ends: 43 [2022-03-15 17:20:55,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=406, Invalid=406, Unknown=0, NotChecked=0, Total=812 [2022-03-15 17:20:55,019 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:55,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:55,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-03-15 17:20:55,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-03-15 17:20:55,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 42 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:55,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 69 transitions. [2022-03-15 17:20:55,021 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 69 transitions. Word has length 21 [2022-03-15 17:20:55,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:55,021 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 69 transitions. [2022-03-15 17:20:55,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:55,021 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 69 transitions. [2022-03-15 17:20:55,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-15 17:20:55,022 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:55,022 INFO L514 BasicCegarLoop]: trace histogram [13, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:55,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:55,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-03-15 17:20:55,239 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:55,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:55,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1994185455, now seen corresponding path program 12 times [2022-03-15 17:20:55,240 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:55,241 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770539186] [2022-03-15 17:20:55,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:55,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:55,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:55,371 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:55,372 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:55,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770539186] [2022-03-15 17:20:55,372 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770539186] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:55,372 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120943144] [2022-03-15 17:20:55,372 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:20:55,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:55,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:55,374 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:55,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-03-15 17:20:55,668 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2022-03-15 17:20:55,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:55,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-15 17:20:55,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:55,709 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:55,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:55,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120943144] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:55,968 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:55,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 30 [2022-03-15 17:20:55,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [886379560] [2022-03-15 17:20:55,968 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:55,970 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:55,974 INFO L252 McrAutomatonBuilder]: Finished intersection with 23 states and 22 transitions. [2022-03-15 17:20:55,974 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:55,975 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:55,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-03-15 17:20:55,975 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:55,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-03-15 17:20:55,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2022-03-15 17:20:55,976 INFO L87 Difference]: Start difference. First operand 43 states and 69 transitions. Second operand has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:56,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:56,017 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2022-03-15 17:20:56,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-03-15 17:20:56,017 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-03-15 17:20:56,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:56,018 INFO L225 Difference]: With dead ends: 44 [2022-03-15 17:20:56,018 INFO L226 Difference]: Without dead ends: 44 [2022-03-15 17:20:56,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2022-03-15 17:20:56,021 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:56,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 2 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:56,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2022-03-15 17:20:56,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2022-03-15 17:20:56,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.627906976744186) internal successors, (70), 43 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:56,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 70 transitions. [2022-03-15 17:20:56,024 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 70 transitions. Word has length 22 [2022-03-15 17:20:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:56,024 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 70 transitions. [2022-03-15 17:20:56,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.25) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 70 transitions. [2022-03-15 17:20:56,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-03-15 17:20:56,027 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:56,027 INFO L514 BasicCegarLoop]: trace histogram [14, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:56,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:56,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:56,247 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:56,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:56,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1352542926, now seen corresponding path program 13 times [2022-03-15 17:20:56,249 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:56,249 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058138411] [2022-03-15 17:20:56,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:56,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:56,414 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:56,414 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:56,414 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058138411] [2022-03-15 17:20:56,414 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058138411] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:56,415 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560122655] [2022-03-15 17:20:56,415 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:20:56,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:56,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:56,416 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:56,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-03-15 17:20:56,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:56,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 16 conjunts are in the unsatisfiable core [2022-03-15 17:20:56,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:56,576 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:56,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:56,875 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560122655] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:56,875 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:56,875 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2022-03-15 17:20:56,875 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1425750327] [2022-03-15 17:20:56,875 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:56,878 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:56,882 INFO L252 McrAutomatonBuilder]: Finished intersection with 24 states and 23 transitions. [2022-03-15 17:20:56,882 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:56,883 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:56,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-15 17:20:56,883 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:56,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-15 17:20:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 17:20:56,884 INFO L87 Difference]: Start difference. First operand 44 states and 70 transitions. Second operand has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:56,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:56,923 INFO L93 Difference]: Finished difference Result 45 states and 71 transitions. [2022-03-15 17:20:56,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-03-15 17:20:56,924 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-03-15 17:20:56,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:56,924 INFO L225 Difference]: With dead ends: 45 [2022-03-15 17:20:56,924 INFO L226 Difference]: Without dead ends: 45 [2022-03-15 17:20:56,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-03-15 17:20:56,925 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:56,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 2 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:56,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-03-15 17:20:56,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-03-15 17:20:56,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 44 states have (on average 1.6136363636363635) internal successors, (71), 44 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:56,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 71 transitions. [2022-03-15 17:20:56,928 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 71 transitions. Word has length 23 [2022-03-15 17:20:56,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:56,928 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 71 transitions. [2022-03-15 17:20:56,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:56,928 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 71 transitions. [2022-03-15 17:20:56,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-15 17:20:56,928 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:56,929 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:56,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:57,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-03-15 17:20:57,152 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:57,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:57,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2021907633, now seen corresponding path program 14 times [2022-03-15 17:20:57,153 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:57,153 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328061052] [2022-03-15 17:20:57,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:57,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:57,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:57,319 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:57,320 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:57,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328061052] [2022-03-15 17:20:57,320 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328061052] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:57,320 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349362565] [2022-03-15 17:20:57,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:20:57,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:57,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:57,321 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:57,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-03-15 17:20:57,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:20:57,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:57,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2022-03-15 17:20:57,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:57,481 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:57,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:57,775 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349362565] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:57,775 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:57,775 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 34 [2022-03-15 17:20:57,775 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1376219380] [2022-03-15 17:20:57,775 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:57,777 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:57,781 INFO L252 McrAutomatonBuilder]: Finished intersection with 25 states and 24 transitions. [2022-03-15 17:20:57,782 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:57,782 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:57,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-15 17:20:57,782 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-15 17:20:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 17:20:57,783 INFO L87 Difference]: Start difference. First operand 45 states and 71 transitions. Second operand has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:57,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:57,816 INFO L93 Difference]: Finished difference Result 46 states and 72 transitions. [2022-03-15 17:20:57,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-03-15 17:20:57,816 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-03-15 17:20:57,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:57,817 INFO L225 Difference]: With dead ends: 46 [2022-03-15 17:20:57,817 INFO L226 Difference]: Without dead ends: 46 [2022-03-15 17:20:57,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=595, Invalid=595, Unknown=0, NotChecked=0, Total=1190 [2022-03-15 17:20:57,818 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:57,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:57,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-03-15 17:20:57,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2022-03-15 17:20:57,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.6) internal successors, (72), 45 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 72 transitions. [2022-03-15 17:20:57,820 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 72 transitions. Word has length 24 [2022-03-15 17:20:57,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:57,820 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 72 transitions. [2022-03-15 17:20:57,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 17 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:57,820 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 72 transitions. [2022-03-15 17:20:57,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-03-15 17:20:57,821 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:57,821 INFO L514 BasicCegarLoop]: trace histogram [16, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:57,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:58,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-03-15 17:20:58,044 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:58,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:58,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1297377070, now seen corresponding path program 15 times [2022-03-15 17:20:58,045 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:58,046 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301377181] [2022-03-15 17:20:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:58,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:58,236 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:58,236 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:58,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301377181] [2022-03-15 17:20:58,236 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301377181] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:58,236 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897364603] [2022-03-15 17:20:58,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:20:58,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:58,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:58,244 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:58,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-03-15 17:20:58,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-03-15 17:20:58,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:58,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 18 conjunts are in the unsatisfiable core [2022-03-15 17:20:58,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:58,612 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:20:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:58,997 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897364603] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:20:58,997 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:20:58,997 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2022-03-15 17:20:58,998 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [679129392] [2022-03-15 17:20:58,998 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:20:59,000 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:20:59,005 INFO L252 McrAutomatonBuilder]: Finished intersection with 26 states and 25 transitions. [2022-03-15 17:20:59,005 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:20:59,006 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:20:59,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-03-15 17:20:59,006 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:20:59,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-03-15 17:20:59,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 17:20:59,007 INFO L87 Difference]: Start difference. First operand 46 states and 72 transitions. Second operand has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:59,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:20:59,043 INFO L93 Difference]: Finished difference Result 47 states and 73 transitions. [2022-03-15 17:20:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-03-15 17:20:59,048 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-03-15 17:20:59,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:20:59,049 INFO L225 Difference]: With dead ends: 47 [2022-03-15 17:20:59,049 INFO L226 Difference]: Without dead ends: 47 [2022-03-15 17:20:59,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=666, Invalid=666, Unknown=0, NotChecked=0, Total=1332 [2022-03-15 17:20:59,050 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:20:59,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 2 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:20:59,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-03-15 17:20:59,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-03-15 17:20:59,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.5869565217391304) internal successors, (73), 46 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 73 transitions. [2022-03-15 17:20:59,052 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 73 transitions. Word has length 25 [2022-03-15 17:20:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:20:59,053 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 73 transitions. [2022-03-15 17:20:59,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:20:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 73 transitions. [2022-03-15 17:20:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-03-15 17:20:59,054 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:20:59,054 INFO L514 BasicCegarLoop]: trace histogram [17, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:20:59,079 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-03-15 17:20:59,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-03-15 17:20:59,272 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:20:59,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:20:59,272 INFO L85 PathProgramCache]: Analyzing trace with hash 311766097, now seen corresponding path program 16 times [2022-03-15 17:20:59,272 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:20:59,273 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115326954] [2022-03-15 17:20:59,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:20:59,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:20:59,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:20:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:59,447 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:20:59,447 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115326954] [2022-03-15 17:20:59,448 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115326954] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:20:59,448 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134123726] [2022-03-15 17:20:59,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:20:59,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:20:59,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:20:59,452 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:20:59,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-03-15 17:20:59,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:20:59,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:20:59,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 19 conjunts are in the unsatisfiable core [2022-03-15 17:20:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:20:59,646 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:20:59,646 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:00,034 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:00,035 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134123726] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:00,035 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:00,035 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 38 [2022-03-15 17:21:00,035 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [157564586] [2022-03-15 17:21:00,035 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:00,037 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:00,041 INFO L252 McrAutomatonBuilder]: Finished intersection with 27 states and 26 transitions. [2022-03-15 17:21:00,042 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:00,042 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:00,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-15 17:21:00,042 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:00,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-15 17:21:00,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 17:21:00,043 INFO L87 Difference]: Start difference. First operand 47 states and 73 transitions. Second operand has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:00,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:00,079 INFO L93 Difference]: Finished difference Result 48 states and 74 transitions. [2022-03-15 17:21:00,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-03-15 17:21:00,080 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-03-15 17:21:00,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:00,080 INFO L225 Difference]: With dead ends: 48 [2022-03-15 17:21:00,080 INFO L226 Difference]: Without dead ends: 48 [2022-03-15 17:21:00,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=741, Invalid=741, Unknown=0, NotChecked=0, Total=1482 [2022-03-15 17:21:00,081 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 81 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:00,081 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 2 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:00,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2022-03-15 17:21:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2022-03-15 17:21:00,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 1.574468085106383) internal successors, (74), 47 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:00,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 74 transitions. [2022-03-15 17:21:00,083 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 74 transitions. Word has length 26 [2022-03-15 17:21:00,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:00,083 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 74 transitions. [2022-03-15 17:21:00,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.2) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:00,083 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 74 transitions. [2022-03-15 17:21:00,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-15 17:21:00,084 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:00,084 INFO L514 BasicCegarLoop]: trace histogram [18, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:00,104 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:00,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:00,300 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash -177402994, now seen corresponding path program 17 times [2022-03-15 17:21:00,301 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:00,302 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462368473] [2022-03-15 17:21:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:00,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:00,494 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:00,494 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462368473] [2022-03-15 17:21:00,495 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462368473] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:00,495 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676355847] [2022-03-15 17:21:00,495 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:21:00,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:00,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:00,496 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:00,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-03-15 17:21:00,699 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2022-03-15 17:21:00,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:00,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 20 conjunts are in the unsatisfiable core [2022-03-15 17:21:00,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:00,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:01,194 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:01,194 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676355847] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:01,194 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:01,194 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 40 [2022-03-15 17:21:01,194 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1991373723] [2022-03-15 17:21:01,194 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:01,198 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:01,203 INFO L252 McrAutomatonBuilder]: Finished intersection with 28 states and 27 transitions. [2022-03-15 17:21:01,204 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:01,204 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:01,204 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-03-15 17:21:01,205 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:01,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-03-15 17:21:01,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 17:21:01,206 INFO L87 Difference]: Start difference. First operand 48 states and 74 transitions. Second operand has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:01,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:01,244 INFO L93 Difference]: Finished difference Result 49 states and 75 transitions. [2022-03-15 17:21:01,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-03-15 17:21:01,245 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-03-15 17:21:01,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:01,245 INFO L225 Difference]: With dead ends: 49 [2022-03-15 17:21:01,245 INFO L226 Difference]: Without dead ends: 49 [2022-03-15 17:21:01,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=820, Invalid=820, Unknown=0, NotChecked=0, Total=1640 [2022-03-15 17:21:01,248 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:01,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:01,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-03-15 17:21:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-03-15 17:21:01,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.5625) internal successors, (75), 48 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:01,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 75 transitions. [2022-03-15 17:21:01,252 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 75 transitions. Word has length 27 [2022-03-15 17:21:01,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:01,252 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 75 transitions. [2022-03-15 17:21:01,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:01,252 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 75 transitions. [2022-03-15 17:21:01,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-15 17:21:01,252 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:01,252 INFO L514 BasicCegarLoop]: trace histogram [19, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:01,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:01,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:01,457 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:01,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:01,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1838224369, now seen corresponding path program 18 times [2022-03-15 17:21:01,458 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:01,458 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880113611] [2022-03-15 17:21:01,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:01,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:01,668 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:01,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880113611] [2022-03-15 17:21:01,669 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880113611] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:01,669 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440533801] [2022-03-15 17:21:01,669 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:21:01,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:01,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:01,670 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:01,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-03-15 17:21:02,543 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s) [2022-03-15 17:21:02,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:02,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 21 conjunts are in the unsatisfiable core [2022-03-15 17:21:02,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:02,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:03,028 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:03,028 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440533801] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:03,028 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:03,028 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 42 [2022-03-15 17:21:03,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1245280349] [2022-03-15 17:21:03,028 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:03,031 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:03,036 INFO L252 McrAutomatonBuilder]: Finished intersection with 29 states and 28 transitions. [2022-03-15 17:21:03,036 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:03,036 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:03,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-03-15 17:21:03,037 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:03,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-03-15 17:21:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 17:21:03,038 INFO L87 Difference]: Start difference. First operand 49 states and 75 transitions. Second operand has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:03,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:03,089 INFO L93 Difference]: Finished difference Result 50 states and 76 transitions. [2022-03-15 17:21:03,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-03-15 17:21:03,090 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-03-15 17:21:03,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:03,090 INFO L225 Difference]: With dead ends: 50 [2022-03-15 17:21:03,090 INFO L226 Difference]: Without dead ends: 50 [2022-03-15 17:21:03,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=903, Invalid=903, Unknown=0, NotChecked=0, Total=1806 [2022-03-15 17:21:03,092 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 162 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:03,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 2 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-03-15 17:21:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-03-15 17:21:03,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 49 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 76 transitions. [2022-03-15 17:21:03,094 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 76 transitions. Word has length 28 [2022-03-15 17:21:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:03,094 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 76 transitions. [2022-03-15 17:21:03,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 76 transitions. [2022-03-15 17:21:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-15 17:21:03,095 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:03,095 INFO L514 BasicCegarLoop]: trace histogram [20, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:03,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:03,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-03-15 17:21:03,310 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:03,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:03,310 INFO L85 PathProgramCache]: Analyzing trace with hash -101836818, now seen corresponding path program 19 times [2022-03-15 17:21:03,311 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:03,311 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546421653] [2022-03-15 17:21:03,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:03,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:03,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:03,537 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:03,538 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:03,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546421653] [2022-03-15 17:21:03,538 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546421653] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:03,538 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806251389] [2022-03-15 17:21:03,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:21:03,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:03,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:03,539 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:03,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-03-15 17:21:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:03,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 22 conjunts are in the unsatisfiable core [2022-03-15 17:21:03,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:03,730 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:03,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:04,183 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:04,184 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806251389] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:04,184 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:04,184 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 22] total 44 [2022-03-15 17:21:04,184 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [964861047] [2022-03-15 17:21:04,184 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:04,187 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:04,193 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 29 transitions. [2022-03-15 17:21:04,193 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:04,193 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:04,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-03-15 17:21:04,194 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-03-15 17:21:04,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 17:21:04,195 INFO L87 Difference]: Start difference. First operand 50 states and 76 transitions. Second operand has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:04,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:04,240 INFO L93 Difference]: Finished difference Result 51 states and 77 transitions. [2022-03-15 17:21:04,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-15 17:21:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-03-15 17:21:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:04,241 INFO L225 Difference]: With dead ends: 51 [2022-03-15 17:21:04,241 INFO L226 Difference]: Without dead ends: 51 [2022-03-15 17:21:04,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=990, Invalid=990, Unknown=0, NotChecked=0, Total=1980 [2022-03-15 17:21:04,242 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:04,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:04,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-03-15 17:21:04,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-03-15 17:21:04,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 50 states have (on average 1.54) internal successors, (77), 50 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:04,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 77 transitions. [2022-03-15 17:21:04,244 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 77 transitions. Word has length 29 [2022-03-15 17:21:04,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:04,244 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 77 transitions. [2022-03-15 17:21:04,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.173913043478261) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 77 transitions. [2022-03-15 17:21:04,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-15 17:21:04,245 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:04,245 INFO L514 BasicCegarLoop]: trace histogram [21, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:04,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:04,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-03-15 17:21:04,458 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:04,459 INFO L85 PathProgramCache]: Analyzing trace with hash -114191471, now seen corresponding path program 20 times [2022-03-15 17:21:04,459 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:04,459 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256757897] [2022-03-15 17:21:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:04,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:04,694 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:04,694 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256757897] [2022-03-15 17:21:04,695 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256757897] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:04,696 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234318830] [2022-03-15 17:21:04,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:21:04,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:04,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:04,697 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:04,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-03-15 17:21:04,814 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:21:04,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:04,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 23 conjunts are in the unsatisfiable core [2022-03-15 17:21:04,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:04,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:05,360 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1234318830] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:05,360 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:05,360 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-03-15 17:21:05,360 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [321618710] [2022-03-15 17:21:05,360 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:05,364 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:05,368 INFO L252 McrAutomatonBuilder]: Finished intersection with 31 states and 30 transitions. [2022-03-15 17:21:05,369 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:05,369 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:05,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-03-15 17:21:05,369 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-03-15 17:21:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 17:21:05,370 INFO L87 Difference]: Start difference. First operand 51 states and 77 transitions. Second operand has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:05,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:05,410 INFO L93 Difference]: Finished difference Result 52 states and 78 transitions. [2022-03-15 17:21:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-03-15 17:21:05,411 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-03-15 17:21:05,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:05,411 INFO L225 Difference]: With dead ends: 52 [2022-03-15 17:21:05,411 INFO L226 Difference]: Without dead ends: 52 [2022-03-15 17:21:05,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1081, Invalid=1081, Unknown=0, NotChecked=0, Total=2162 [2022-03-15 17:21:05,412 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:05,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 2 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:05,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2022-03-15 17:21:05,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2022-03-15 17:21:05,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.5294117647058822) internal successors, (78), 51 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:05,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 78 transitions. [2022-03-15 17:21:05,414 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 78 transitions. Word has length 30 [2022-03-15 17:21:05,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:05,414 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 78 transitions. [2022-03-15 17:21:05,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:05,414 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 78 transitions. [2022-03-15 17:21:05,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-03-15 17:21:05,414 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:05,414 INFO L514 BasicCegarLoop]: trace histogram [22, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:05,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:05,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:05,627 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:05,628 INFO L85 PathProgramCache]: Analyzing trace with hash -497185714, now seen corresponding path program 21 times [2022-03-15 17:21:05,628 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:05,628 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240233318] [2022-03-15 17:21:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:05,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:05,940 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:05,940 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:05,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240233318] [2022-03-15 17:21:05,941 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240233318] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:05,941 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813975736] [2022-03-15 17:21:05,941 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:21:05,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:05,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:05,942 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:05,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-03-15 17:21:06,968 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2022-03-15 17:21:06,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:06,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 24 conjunts are in the unsatisfiable core [2022-03-15 17:21:06,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:07,035 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:07,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:07,581 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:07,582 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813975736] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:07,582 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:07,582 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-03-15 17:21:07,582 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1604343114] [2022-03-15 17:21:07,582 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:07,586 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:07,593 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 31 transitions. [2022-03-15 17:21:07,593 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:07,594 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:07,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-03-15 17:21:07,594 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:07,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-03-15 17:21:07,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 17:21:07,595 INFO L87 Difference]: Start difference. First operand 52 states and 78 transitions. Second operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:07,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:07,632 INFO L93 Difference]: Finished difference Result 53 states and 79 transitions. [2022-03-15 17:21:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-03-15 17:21:07,633 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-03-15 17:21:07,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:07,633 INFO L225 Difference]: With dead ends: 53 [2022-03-15 17:21:07,633 INFO L226 Difference]: Without dead ends: 53 [2022-03-15 17:21:07,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-03-15 17:21:07,635 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:07,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 2 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-15 17:21:07,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-03-15 17:21:07,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 52 states have (on average 1.5192307692307692) internal successors, (79), 52 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:07,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2022-03-15 17:21:07,637 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 31 [2022-03-15 17:21:07,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:07,637 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2022-03-15 17:21:07,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:07,637 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2022-03-15 17:21:07,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-03-15 17:21:07,637 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:07,637 INFO L514 BasicCegarLoop]: trace histogram [23, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:07,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-03-15 17:21:07,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:07,851 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:07,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:07,852 INFO L85 PathProgramCache]: Analyzing trace with hash 514894641, now seen corresponding path program 22 times [2022-03-15 17:21:07,852 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:07,852 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867225359] [2022-03-15 17:21:07,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:07,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:08,117 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:08,117 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:08,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867225359] [2022-03-15 17:21:08,117 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867225359] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:08,117 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529070921] [2022-03-15 17:21:08,118 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:21:08,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:08,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:08,120 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:08,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-03-15 17:21:08,254 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:21:08,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:08,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 25 conjunts are in the unsatisfiable core [2022-03-15 17:21:08,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:08,311 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:08,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:08,924 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:08,924 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529070921] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:08,924 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:08,924 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 50 [2022-03-15 17:21:08,924 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1786089236] [2022-03-15 17:21:08,924 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:08,928 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:08,934 INFO L252 McrAutomatonBuilder]: Finished intersection with 33 states and 32 transitions. [2022-03-15 17:21:08,934 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:08,935 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:08,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-03-15 17:21:08,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:08,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-03-15 17:21:08,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 17:21:08,936 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:08,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:08,972 INFO L93 Difference]: Finished difference Result 54 states and 80 transitions. [2022-03-15 17:21:08,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-03-15 17:21:08,972 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-03-15 17:21:08,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:08,972 INFO L225 Difference]: With dead ends: 54 [2022-03-15 17:21:08,972 INFO L226 Difference]: Without dead ends: 54 [2022-03-15 17:21:08,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1275, Invalid=1275, Unknown=0, NotChecked=0, Total=2550 [2022-03-15 17:21:08,974 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:08,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 2 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:08,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-03-15 17:21:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-03-15 17:21:08,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.509433962264151) internal successors, (80), 53 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:08,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2022-03-15 17:21:08,975 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 32 [2022-03-15 17:21:08,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:08,975 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2022-03-15 17:21:08,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.1538461538461537) internal successors, (30), 25 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:08,975 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2022-03-15 17:21:08,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-03-15 17:21:08,976 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:08,976 INFO L514 BasicCegarLoop]: trace histogram [24, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:08,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2022-03-15 17:21:09,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-03-15 17:21:09,176 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1824614574, now seen corresponding path program 23 times [2022-03-15 17:21:09,192 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:09,192 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830691056] [2022-03-15 17:21:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:09,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:09,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:09,473 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:09,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830691056] [2022-03-15 17:21:09,473 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830691056] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:09,473 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246586645] [2022-03-15 17:21:09,473 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:21:09,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:09,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:09,474 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:09,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-03-15 17:21:11,099 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s) [2022-03-15 17:21:11,099 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:11,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 26 conjunts are in the unsatisfiable core [2022-03-15 17:21:11,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:11,161 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:11,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:11,845 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:11,846 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246586645] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:11,846 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:11,846 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 52 [2022-03-15 17:21:11,846 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [965164305] [2022-03-15 17:21:11,846 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:11,851 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:11,859 INFO L252 McrAutomatonBuilder]: Finished intersection with 34 states and 33 transitions. [2022-03-15 17:21:11,859 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:11,860 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:11,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-03-15 17:21:11,860 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:11,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-03-15 17:21:11,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 17:21:11,861 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:11,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:11,907 INFO L93 Difference]: Finished difference Result 55 states and 81 transitions. [2022-03-15 17:21:11,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-03-15 17:21:11,907 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-03-15 17:21:11,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:11,908 INFO L225 Difference]: With dead ends: 55 [2022-03-15 17:21:11,908 INFO L226 Difference]: Without dead ends: 55 [2022-03-15 17:21:11,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1378, Invalid=1378, Unknown=0, NotChecked=0, Total=2756 [2022-03-15 17:21:11,909 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 36 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:11,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:11,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-03-15 17:21:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-03-15 17:21:11,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 54 states have (on average 1.5) internal successors, (81), 54 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:11,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 81 transitions. [2022-03-15 17:21:11,911 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 81 transitions. Word has length 33 [2022-03-15 17:21:11,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:11,911 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 81 transitions. [2022-03-15 17:21:11,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 26 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:11,911 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 81 transitions. [2022-03-15 17:21:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 17:21:11,911 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:11,912 INFO L514 BasicCegarLoop]: trace histogram [25, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:11,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:12,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-03-15 17:21:12,112 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:12,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:12,113 INFO L85 PathProgramCache]: Analyzing trace with hash -523740463, now seen corresponding path program 24 times [2022-03-15 17:21:12,113 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:12,113 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238769391] [2022-03-15 17:21:12,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:12,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:12,433 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:12,434 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:12,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238769391] [2022-03-15 17:21:12,434 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238769391] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:12,434 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267688387] [2022-03-15 17:21:12,434 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:21:12,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:12,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:12,436 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:12,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-03-15 17:21:15,211 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s) [2022-03-15 17:21:15,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:15,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 27 conjunts are in the unsatisfiable core [2022-03-15 17:21:15,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:15,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:15,961 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267688387] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:15,961 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:15,961 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2022-03-15 17:21:15,961 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [260607373] [2022-03-15 17:21:15,961 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:15,965 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:15,972 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 34 transitions. [2022-03-15 17:21:15,972 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:15,972 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:15,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-03-15 17:21:15,972 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:15,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-03-15 17:21:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 17:21:15,989 INFO L87 Difference]: Start difference. First operand 55 states and 81 transitions. Second operand has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:16,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:16,035 INFO L93 Difference]: Finished difference Result 56 states and 82 transitions. [2022-03-15 17:21:16,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-03-15 17:21:16,036 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 17:21:16,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:16,036 INFO L225 Difference]: With dead ends: 56 [2022-03-15 17:21:16,036 INFO L226 Difference]: Without dead ends: 56 [2022-03-15 17:21:16,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1485, Invalid=1485, Unknown=0, NotChecked=0, Total=2970 [2022-03-15 17:21:16,037 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:16,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:16,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-03-15 17:21:16,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-03-15 17:21:16,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.490909090909091) internal successors, (82), 55 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:16,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2022-03-15 17:21:16,039 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 34 [2022-03-15 17:21:16,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:16,039 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2022-03-15 17:21:16,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:16,040 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2022-03-15 17:21:16,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-03-15 17:21:16,040 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:16,040 INFO L514 BasicCegarLoop]: trace histogram [26, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:16,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-03-15 17:21:16,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-03-15 17:21:16,241 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:16,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:16,241 INFO L85 PathProgramCache]: Analyzing trace with hash -308302578, now seen corresponding path program 25 times [2022-03-15 17:21:16,242 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:16,242 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833385555] [2022-03-15 17:21:16,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:16,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:16,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:16,564 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:16,564 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:16,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833385555] [2022-03-15 17:21:16,564 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833385555] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:16,564 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724878580] [2022-03-15 17:21:16,564 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:21:16,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:16,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:16,565 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:16,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-03-15 17:21:16,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:16,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 28 conjunts are in the unsatisfiable core [2022-03-15 17:21:16,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:16,781 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:16,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:17,525 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:17,525 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724878580] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:17,525 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:17,525 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28, 28] total 56 [2022-03-15 17:21:17,526 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2047039357] [2022-03-15 17:21:17,526 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:17,530 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:17,538 INFO L252 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2022-03-15 17:21:17,538 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:17,539 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:17,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-03-15 17:21:17,539 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-03-15 17:21:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 17:21:17,541 INFO L87 Difference]: Start difference. First operand 56 states and 82 transitions. Second operand has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:17,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:17,578 INFO L93 Difference]: Finished difference Result 57 states and 83 transitions. [2022-03-15 17:21:17,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-03-15 17:21:17,578 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-03-15 17:21:17,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:17,579 INFO L225 Difference]: With dead ends: 57 [2022-03-15 17:21:17,579 INFO L226 Difference]: Without dead ends: 57 [2022-03-15 17:21:17,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1596, Invalid=1596, Unknown=0, NotChecked=0, Total=3192 [2022-03-15 17:21:17,580 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 45 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:17,580 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 2 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:17,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-03-15 17:21:17,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-03-15 17:21:17,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.4821428571428572) internal successors, (83), 56 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:17,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 83 transitions. [2022-03-15 17:21:17,582 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 83 transitions. Word has length 35 [2022-03-15 17:21:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:17,582 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 83 transitions. [2022-03-15 17:21:17,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 1.1379310344827587) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:17,582 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 83 transitions. [2022-03-15 17:21:17,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-15 17:21:17,583 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:17,583 INFO L514 BasicCegarLoop]: trace histogram [27, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:17,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-03-15 17:21:17,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-03-15 17:21:17,787 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:17,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:17,788 INFO L85 PathProgramCache]: Analyzing trace with hash 2075304561, now seen corresponding path program 26 times [2022-03-15 17:21:17,788 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:17,788 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639513983] [2022-03-15 17:21:17,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:17,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:17,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:18,160 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:18,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639513983] [2022-03-15 17:21:18,160 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639513983] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:18,160 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1404790219] [2022-03-15 17:21:18,160 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:21:18,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:18,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:18,161 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:18,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-03-15 17:21:18,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:21:18,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:18,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 29 conjunts are in the unsatisfiable core [2022-03-15 17:21:18,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:18,371 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:18,371 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:19,139 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:19,139 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1404790219] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:19,139 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:19,139 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29, 29] total 58 [2022-03-15 17:21:19,139 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1876744530] [2022-03-15 17:21:19,140 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:19,145 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:19,153 INFO L252 McrAutomatonBuilder]: Finished intersection with 37 states and 36 transitions. [2022-03-15 17:21:19,154 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:19,154 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:19,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-03-15 17:21:19,154 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:19,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-03-15 17:21:19,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 17:21:19,156 INFO L87 Difference]: Start difference. First operand 57 states and 83 transitions. Second operand has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:19,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:19,197 INFO L93 Difference]: Finished difference Result 58 states and 84 transitions. [2022-03-15 17:21:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-03-15 17:21:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-03-15 17:21:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:19,198 INFO L225 Difference]: With dead ends: 58 [2022-03-15 17:21:19,198 INFO L226 Difference]: Without dead ends: 58 [2022-03-15 17:21:19,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1711, Invalid=1711, Unknown=0, NotChecked=0, Total=3422 [2022-03-15 17:21:19,199 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 99 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:19,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 2 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:19,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-03-15 17:21:19,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-03-15 17:21:19,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.4736842105263157) internal successors, (84), 57 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:19,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 84 transitions. [2022-03-15 17:21:19,201 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 84 transitions. Word has length 36 [2022-03-15 17:21:19,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:19,201 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 84 transitions. [2022-03-15 17:21:19,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 29 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:19,201 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 84 transitions. [2022-03-15 17:21:19,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-03-15 17:21:19,202 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:19,202 INFO L514 BasicCegarLoop]: trace histogram [28, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:19,218 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-03-15 17:21:19,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-03-15 17:21:19,407 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:19,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:19,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1342285458, now seen corresponding path program 27 times [2022-03-15 17:21:19,411 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:19,411 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547275547] [2022-03-15 17:21:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:19,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:19,827 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:19,827 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:19,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547275547] [2022-03-15 17:21:19,827 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547275547] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:19,827 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700562458] [2022-03-15 17:21:19,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:21:19,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:19,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:19,829 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:19,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-03-15 17:21:24,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-03-15 17:21:24,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:24,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 30 conjunts are in the unsatisfiable core [2022-03-15 17:21:24,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:24,786 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:24,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:25,630 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700562458] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:25,630 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:25,630 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30, 30] total 60 [2022-03-15 17:21:25,630 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [217946533] [2022-03-15 17:21:25,630 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:25,635 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:25,644 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 37 transitions. [2022-03-15 17:21:25,644 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:25,644 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:25,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-03-15 17:21:25,644 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:25,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-03-15 17:21:25,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 17:21:25,646 INFO L87 Difference]: Start difference. First operand 58 states and 84 transitions. Second operand has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:25,693 INFO L93 Difference]: Finished difference Result 59 states and 85 transitions. [2022-03-15 17:21:25,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-03-15 17:21:25,694 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-03-15 17:21:25,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:25,694 INFO L225 Difference]: With dead ends: 59 [2022-03-15 17:21:25,694 INFO L226 Difference]: Without dead ends: 59 [2022-03-15 17:21:25,695 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2022-03-15 17:21:25,695 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 72 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:25,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 2 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:25,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-03-15 17:21:25,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-03-15 17:21:25,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 58 states have (on average 1.4655172413793103) internal successors, (85), 58 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:25,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2022-03-15 17:21:25,697 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 37 [2022-03-15 17:21:25,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:25,697 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2022-03-15 17:21:25,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 30 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:25,698 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2022-03-15 17:21:25,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-03-15 17:21:25,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:25,698 INFO L514 BasicCegarLoop]: trace histogram [29, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:25,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-03-15 17:21:25,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:25,907 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash 86606353, now seen corresponding path program 28 times [2022-03-15 17:21:25,908 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:25,908 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879999770] [2022-03-15 17:21:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:25,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:26,286 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:26,287 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:26,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879999770] [2022-03-15 17:21:26,287 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879999770] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:26,287 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1935435124] [2022-03-15 17:21:26,287 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:21:26,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:26,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:26,288 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:26,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-03-15 17:21:26,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:21:26,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:26,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 31 conjunts are in the unsatisfiable core [2022-03-15 17:21:26,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:26,511 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:26,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:27,403 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:27,403 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1935435124] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:27,403 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:27,403 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 62 [2022-03-15 17:21:27,403 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2091541422] [2022-03-15 17:21:27,403 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:27,408 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:27,416 INFO L252 McrAutomatonBuilder]: Finished intersection with 39 states and 38 transitions. [2022-03-15 17:21:27,417 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:27,417 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:27,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-03-15 17:21:27,417 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:27,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-03-15 17:21:27,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 17:21:27,418 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 32 states, 32 states have (on average 1.125) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:27,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:27,457 INFO L93 Difference]: Finished difference Result 60 states and 86 transitions. [2022-03-15 17:21:27,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-03-15 17:21:27,457 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-03-15 17:21:27,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:27,457 INFO L225 Difference]: With dead ends: 60 [2022-03-15 17:21:27,457 INFO L226 Difference]: Without dead ends: 60 [2022-03-15 17:21:27,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1953, Invalid=1953, Unknown=0, NotChecked=0, Total=3906 [2022-03-15 17:21:27,458 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:27,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:27,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-03-15 17:21:27,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2022-03-15 17:21:27,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 1.4576271186440677) internal successors, (86), 59 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 86 transitions. [2022-03-15 17:21:27,460 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 86 transitions. Word has length 38 [2022-03-15 17:21:27,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:27,461 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 86 transitions. [2022-03-15 17:21:27,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 1.125) internal successors, (36), 31 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:27,461 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 86 transitions. [2022-03-15 17:21:27,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-03-15 17:21:27,461 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:27,461 INFO L514 BasicCegarLoop]: trace histogram [30, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:27,478 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-03-15 17:21:27,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-03-15 17:21:27,663 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:27,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:27,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1432579534, now seen corresponding path program 29 times [2022-03-15 17:21:27,664 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:27,664 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565621975] [2022-03-15 17:21:27,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:27,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:27,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:28,132 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:28,132 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:28,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565621975] [2022-03-15 17:21:28,133 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565621975] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:28,133 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199753852] [2022-03-15 17:21:28,133 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:21:28,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:28,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:28,134 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:28,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-03-15 17:21:31,298 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2022-03-15 17:21:31,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:31,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 32 conjunts are in the unsatisfiable core [2022-03-15 17:21:31,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:31,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:32,324 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:32,324 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199753852] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:32,324 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:32,324 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 64 [2022-03-15 17:21:32,324 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [614926306] [2022-03-15 17:21:32,324 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:32,329 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:32,338 INFO L252 McrAutomatonBuilder]: Finished intersection with 40 states and 39 transitions. [2022-03-15 17:21:32,338 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:32,338 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:32,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-03-15 17:21:32,339 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:32,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-03-15 17:21:32,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 17:21:32,340 INFO L87 Difference]: Start difference. First operand 60 states and 86 transitions. Second operand has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:32,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:32,388 INFO L93 Difference]: Finished difference Result 61 states and 87 transitions. [2022-03-15 17:21:32,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-03-15 17:21:32,388 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-03-15 17:21:32,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:32,388 INFO L225 Difference]: With dead ends: 61 [2022-03-15 17:21:32,389 INFO L226 Difference]: Without dead ends: 61 [2022-03-15 17:21:32,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-03-15 17:21:32,390 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:32,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:32,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-03-15 17:21:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-03-15 17:21:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.45) internal successors, (87), 60 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:32,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 87 transitions. [2022-03-15 17:21:32,391 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 87 transitions. Word has length 39 [2022-03-15 17:21:32,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:32,392 INFO L470 AbstractCegarLoop]: Abstraction has 61 states and 87 transitions. [2022-03-15 17:21:32,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.121212121212121) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:32,392 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 87 transitions. [2022-03-15 17:21:32,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-03-15 17:21:32,392 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:32,392 INFO L514 BasicCegarLoop]: trace histogram [31, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:32,418 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2022-03-15 17:21:32,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:32,611 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:32,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:32,612 INFO L85 PathProgramCache]: Analyzing trace with hash 208075185, now seen corresponding path program 30 times [2022-03-15 17:21:32,612 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:32,613 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405170265] [2022-03-15 17:21:32,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:32,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:33,050 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:33,050 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:33,050 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405170265] [2022-03-15 17:21:33,050 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405170265] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:33,051 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368971116] [2022-03-15 17:21:33,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:21:33,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:33,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:33,052 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:33,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-03-15 17:21:43,695 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2022-03-15 17:21:43,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:43,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 33 conjunts are in the unsatisfiable core [2022-03-15 17:21:43,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:43,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 499 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:44,754 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368971116] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:44,754 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:44,754 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 66 [2022-03-15 17:21:44,754 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1452545197] [2022-03-15 17:21:44,754 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:44,759 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:44,791 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 40 transitions. [2022-03-15 17:21:44,791 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:44,791 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:44,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-03-15 17:21:44,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:44,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-03-15 17:21:44,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2022-03-15 17:21:44,792 INFO L87 Difference]: Start difference. First operand 61 states and 87 transitions. Second operand has 34 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:44,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:44,837 INFO L93 Difference]: Finished difference Result 62 states and 88 transitions. [2022-03-15 17:21:44,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-03-15 17:21:44,838 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-03-15 17:21:44,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:44,838 INFO L225 Difference]: With dead ends: 62 [2022-03-15 17:21:44,838 INFO L226 Difference]: Without dead ends: 62 [2022-03-15 17:21:44,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2022-03-15 17:21:44,839 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:44,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:44,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2022-03-15 17:21:44,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2022-03-15 17:21:44,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 61 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 88 transitions. [2022-03-15 17:21:44,842 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 88 transitions. Word has length 40 [2022-03-15 17:21:44,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:44,842 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 88 transitions. [2022-03-15 17:21:44,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 1.1176470588235294) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:44,842 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 88 transitions. [2022-03-15 17:21:44,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-03-15 17:21:44,842 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:44,842 INFO L514 BasicCegarLoop]: trace histogram [32, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:44,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:45,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:45,055 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 903146030, now seen corresponding path program 31 times [2022-03-15 17:21:45,057 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:45,057 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660407941] [2022-03-15 17:21:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:45,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:45,492 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:45,492 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:45,492 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660407941] [2022-03-15 17:21:45,492 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660407941] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:45,493 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692738625] [2022-03-15 17:21:45,493 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:21:45,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:45,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:45,494 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:45,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-03-15 17:21:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:45,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 34 conjunts are in the unsatisfiable core [2022-03-15 17:21:45,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:45,740 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:45,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:46,778 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:46,778 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [692738625] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:46,778 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:46,778 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 68 [2022-03-15 17:21:46,779 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1930923868] [2022-03-15 17:21:46,779 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:46,784 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:46,794 INFO L252 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2022-03-15 17:21:46,794 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:46,795 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:46,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-03-15 17:21:46,795 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:46,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-03-15 17:21:46,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 17:21:46,796 INFO L87 Difference]: Start difference. First operand 62 states and 88 transitions. Second operand has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:46,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:46,840 INFO L93 Difference]: Finished difference Result 63 states and 89 transitions. [2022-03-15 17:21:46,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-03-15 17:21:46,840 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2022-03-15 17:21:46,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:46,841 INFO L225 Difference]: With dead ends: 63 [2022-03-15 17:21:46,841 INFO L226 Difference]: Without dead ends: 63 [2022-03-15 17:21:46,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2346, Invalid=2346, Unknown=0, NotChecked=0, Total=4692 [2022-03-15 17:21:46,842 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 117 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:46,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 2 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:46,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2022-03-15 17:21:46,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2022-03-15 17:21:46,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 62 states have (on average 1.435483870967742) internal successors, (89), 62 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:46,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 89 transitions. [2022-03-15 17:21:46,844 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 89 transitions. Word has length 41 [2022-03-15 17:21:46,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:46,844 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 89 transitions. [2022-03-15 17:21:46,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1142857142857143) internal successors, (39), 34 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:46,845 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 89 transitions. [2022-03-15 17:21:46,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-03-15 17:21:46,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:46,845 INFO L514 BasicCegarLoop]: trace histogram [33, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:46,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2022-03-15 17:21:47,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-03-15 17:21:47,059 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:47,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash 975505745, now seen corresponding path program 32 times [2022-03-15 17:21:47,061 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:47,061 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600233776] [2022-03-15 17:21:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:47,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:47,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:47,512 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:47,513 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:47,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600233776] [2022-03-15 17:21:47,513 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600233776] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:47,513 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296935602] [2022-03-15 17:21:47,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:21:47,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:47,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:47,514 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:47,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-03-15 17:21:47,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:21:47,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:47,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 35 conjunts are in the unsatisfiable core [2022-03-15 17:21:47,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:47,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 564 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:48,912 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296935602] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:48,912 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:48,912 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35, 35] total 70 [2022-03-15 17:21:48,912 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [587643084] [2022-03-15 17:21:48,912 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:48,919 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:48,934 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 42 transitions. [2022-03-15 17:21:48,934 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:48,934 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:48,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-03-15 17:21:48,935 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:48,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-03-15 17:21:48,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 17:21:48,936 INFO L87 Difference]: Start difference. First operand 63 states and 89 transitions. Second operand has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:48,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:48,981 INFO L93 Difference]: Finished difference Result 64 states and 90 transitions. [2022-03-15 17:21:48,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-03-15 17:21:48,981 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-03-15 17:21:48,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:48,982 INFO L225 Difference]: With dead ends: 64 [2022-03-15 17:21:48,982 INFO L226 Difference]: Without dead ends: 64 [2022-03-15 17:21:48,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2485, Invalid=2485, Unknown=0, NotChecked=0, Total=4970 [2022-03-15 17:21:48,983 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:48,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:48,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-03-15 17:21:48,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-03-15 17:21:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4285714285714286) internal successors, (90), 63 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:48,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2022-03-15 17:21:48,985 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 42 [2022-03-15 17:21:48,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:48,985 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2022-03-15 17:21:48,985 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 1.1111111111111112) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:48,985 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2022-03-15 17:21:48,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-03-15 17:21:48,986 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:48,986 INFO L514 BasicCegarLoop]: trace histogram [34, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:49,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:49,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-03-15 17:21:49,210 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:49,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1076310386, now seen corresponding path program 33 times [2022-03-15 17:21:49,211 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:49,211 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5794956] [2022-03-15 17:21:49,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:49,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:49,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:49,669 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:49,670 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:49,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5794956] [2022-03-15 17:21:49,670 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5794956] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:49,670 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139905015] [2022-03-15 17:21:49,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:21:49,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:49,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:49,671 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:49,674 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-03-15 17:21:55,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s) [2022-03-15 17:21:55,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:55,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 36 conjunts are in the unsatisfiable core [2022-03-15 17:21:55,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:55,475 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:55,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:56,625 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139905015] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:56,625 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:56,625 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36, 36] total 72 [2022-03-15 17:21:56,625 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [583185000] [2022-03-15 17:21:56,626 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:56,632 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:56,646 INFO L252 McrAutomatonBuilder]: Finished intersection with 44 states and 43 transitions. [2022-03-15 17:21:56,647 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:56,647 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:56,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-03-15 17:21:56,647 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:56,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-03-15 17:21:56,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 17:21:56,649 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:56,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:56,693 INFO L93 Difference]: Finished difference Result 65 states and 91 transitions. [2022-03-15 17:21:56,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-03-15 17:21:56,693 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-03-15 17:21:56,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:56,694 INFO L225 Difference]: With dead ends: 65 [2022-03-15 17:21:56,694 INFO L226 Difference]: Without dead ends: 65 [2022-03-15 17:21:56,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=2628, Invalid=2628, Unknown=0, NotChecked=0, Total=5256 [2022-03-15 17:21:56,695 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 63 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:56,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 2 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:56,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-03-15 17:21:56,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-03-15 17:21:56,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.421875) internal successors, (91), 64 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:56,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 91 transitions. [2022-03-15 17:21:56,697 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 91 transitions. Word has length 43 [2022-03-15 17:21:56,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:56,697 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 91 transitions. [2022-03-15 17:21:56,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 36 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:56,697 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 91 transitions. [2022-03-15 17:21:56,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-03-15 17:21:56,698 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:56,698 INFO L514 BasicCegarLoop]: trace histogram [35, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:56,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-03-15 17:21:56,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-03-15 17:21:56,923 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:56,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash -258101007, now seen corresponding path program 34 times [2022-03-15 17:21:56,925 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:56,925 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237451173] [2022-03-15 17:21:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:57,446 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:57,446 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:57,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237451173] [2022-03-15 17:21:57,446 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237451173] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:57,446 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838954169] [2022-03-15 17:21:57,446 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:21:57,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:57,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:57,447 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:57,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-03-15 17:21:57,643 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:21:57,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:21:57,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 37 conjunts are in the unsatisfiable core [2022-03-15 17:21:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:21:57,716 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:57,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:21:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:58,913 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838954169] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:21:58,913 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:21:58,913 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37, 37] total 74 [2022-03-15 17:21:58,913 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [233219022] [2022-03-15 17:21:58,913 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:21:58,918 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:21:58,946 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 44 transitions. [2022-03-15 17:21:58,946 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:21:58,946 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:21:58,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-03-15 17:21:58,947 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:21:58,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-03-15 17:21:58,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 17:21:58,948 INFO L87 Difference]: Start difference. First operand 65 states and 91 transitions. Second operand has 38 states, 38 states have (on average 1.105263157894737) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:58,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:21:58,994 INFO L93 Difference]: Finished difference Result 66 states and 92 transitions. [2022-03-15 17:21:58,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-03-15 17:21:58,994 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 1.105263157894737) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-03-15 17:21:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:21:58,995 INFO L225 Difference]: With dead ends: 66 [2022-03-15 17:21:58,995 INFO L226 Difference]: Without dead ends: 66 [2022-03-15 17:21:58,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2775, Invalid=2775, Unknown=0, NotChecked=0, Total=5550 [2022-03-15 17:21:58,995 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 90 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:21:58,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:21:58,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2022-03-15 17:21:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2022-03-15 17:21:58,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 65 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2022-03-15 17:21:58,997 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 44 [2022-03-15 17:21:58,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:21:58,998 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2022-03-15 17:21:58,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 1.105263157894737) internal successors, (42), 37 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:21:58,998 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2022-03-15 17:21:58,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-03-15 17:21:58,998 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:21:58,998 INFO L514 BasicCegarLoop]: trace histogram [36, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:21:59,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-03-15 17:21:59,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:59,203 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:21:59,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:21:59,204 INFO L85 PathProgramCache]: Analyzing trace with hash -663414034, now seen corresponding path program 35 times [2022-03-15 17:21:59,204 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:21:59,204 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548974310] [2022-03-15 17:21:59,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:21:59,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:21:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:21:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:21:59,705 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:21:59,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548974310] [2022-03-15 17:21:59,705 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548974310] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:21:59,705 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948889263] [2022-03-15 17:21:59,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:21:59,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:21:59,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:21:59,706 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:21:59,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-03-15 17:22:04,006 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2022-03-15 17:22:04,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:22:04,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 38 conjunts are in the unsatisfiable core [2022-03-15 17:22:04,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:22:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:22:04,089 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:22:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 669 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:22:05,392 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948889263] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:22:05,392 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:22:05,392 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38, 38] total 76 [2022-03-15 17:22:05,392 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2076651963] [2022-03-15 17:22:05,392 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:22:05,396 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:22:05,409 INFO L252 McrAutomatonBuilder]: Finished intersection with 46 states and 45 transitions. [2022-03-15 17:22:05,409 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:22:05,409 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:22:05,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-03-15 17:22:05,410 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:22:05,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-03-15 17:22:05,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2022-03-15 17:22:05,411 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:22:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:22:05,460 INFO L93 Difference]: Finished difference Result 67 states and 93 transitions. [2022-03-15 17:22:05,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-03-15 17:22:05,460 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-03-15 17:22:05,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:22:05,460 INFO L225 Difference]: With dead ends: 67 [2022-03-15 17:22:05,461 INFO L226 Difference]: Without dead ends: 67 [2022-03-15 17:22:05,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2926, Invalid=2926, Unknown=0, NotChecked=0, Total=5852 [2022-03-15 17:22:05,461 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 108 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:22:05,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 2 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:22:05,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-03-15 17:22:05,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-03-15 17:22:05,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.4090909090909092) internal successors, (93), 66 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:22:05,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 93 transitions. [2022-03-15 17:22:05,463 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 93 transitions. Word has length 45 [2022-03-15 17:22:05,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:22:05,464 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 93 transitions. [2022-03-15 17:22:05,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 38 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:22:05,464 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 93 transitions. [2022-03-15 17:22:05,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-03-15 17:22:05,464 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:22:05,464 INFO L514 BasicCegarLoop]: trace histogram [37, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:22:05,486 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2022-03-15 17:22:05,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-03-15 17:22:05,675 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:22:05,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:22:05,676 INFO L85 PathProgramCache]: Analyzing trace with hash -343215983, now seen corresponding path program 36 times [2022-03-15 17:22:05,676 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:22:05,676 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475551509] [2022-03-15 17:22:05,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:22:05,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:22:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:22:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:22:06,239 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:22:06,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475551509] [2022-03-15 17:22:06,239 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475551509] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:22:06,239 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239345566] [2022-03-15 17:22:06,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:22:06,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:22:06,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:22:06,240 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:22:06,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-03-15 17:23:35,624 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2022-03-15 17:23:35,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:35,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 39 conjunts are in the unsatisfiable core [2022-03-15 17:23:35,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:35,825 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:35,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 706 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:37,179 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239345566] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:37,179 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:37,180 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39, 39] total 78 [2022-03-15 17:23:37,180 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1323162580] [2022-03-15 17:23:37,180 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:37,185 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:37,215 INFO L252 McrAutomatonBuilder]: Finished intersection with 47 states and 46 transitions. [2022-03-15 17:23:37,216 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:37,216 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:23:37,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-03-15 17:23:37,216 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:37,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-03-15 17:23:37,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 17:23:37,217 INFO L87 Difference]: Start difference. First operand 67 states and 93 transitions. Second operand has 40 states, 40 states have (on average 1.1) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:37,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:37,281 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2022-03-15 17:23:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-03-15 17:23:37,281 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 1.1) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-03-15 17:23:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:37,282 INFO L225 Difference]: With dead ends: 68 [2022-03-15 17:23:37,282 INFO L226 Difference]: Without dead ends: 68 [2022-03-15 17:23:37,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2022-03-15 17:23:37,283 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 81 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:37,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 2 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:23:37,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-03-15 17:23:37,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2022-03-15 17:23:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:37,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2022-03-15 17:23:37,285 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 46 [2022-03-15 17:23:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:37,285 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2022-03-15 17:23:37,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 1.1) internal successors, (44), 39 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2022-03-15 17:23:37,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-03-15 17:23:37,286 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:37,286 INFO L514 BasicCegarLoop]: trace histogram [38, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:23:37,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-03-15 17:23:37,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-03-15 17:23:37,500 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:23:37,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:37,500 INFO L85 PathProgramCache]: Analyzing trace with hash 992989006, now seen corresponding path program 37 times [2022-03-15 17:23:37,501 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:37,501 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372658680] [2022-03-15 17:23:37,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:37,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:37,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:38,102 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:38,103 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:38,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372658680] [2022-03-15 17:23:38,103 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372658680] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:38,103 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1733700921] [2022-03-15 17:23:38,103 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-03-15 17:23:38,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:38,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:38,105 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:38,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-03-15 17:23:38,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:38,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 40 conjunts are in the unsatisfiable core [2022-03-15 17:23:38,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:38,431 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:38,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:39,865 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:39,866 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1733700921] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:39,866 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:39,866 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40, 40] total 80 [2022-03-15 17:23:39,866 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1964804097] [2022-03-15 17:23:39,866 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:39,871 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:39,884 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 47 transitions. [2022-03-15 17:23:39,885 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:39,885 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:23:39,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-03-15 17:23:39,885 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:39,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-03-15 17:23:39,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 17:23:39,887 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand has 41 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:39,934 INFO L93 Difference]: Finished difference Result 69 states and 95 transitions. [2022-03-15 17:23:39,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-03-15 17:23:39,934 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2022-03-15 17:23:39,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:39,935 INFO L225 Difference]: With dead ends: 69 [2022-03-15 17:23:39,935 INFO L226 Difference]: Without dead ends: 69 [2022-03-15 17:23:39,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=3240, Invalid=3240, Unknown=0, NotChecked=0, Total=6480 [2022-03-15 17:23:39,935 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 99 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:39,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 2 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:23:39,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-03-15 17:23:39,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-03-15 17:23:39,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 68 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:39,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 95 transitions. [2022-03-15 17:23:39,940 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 95 transitions. Word has length 47 [2022-03-15 17:23:39,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:39,940 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 95 transitions. [2022-03-15 17:23:39,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 40 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:39,940 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 95 transitions. [2022-03-15 17:23:39,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-03-15 17:23:39,940 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:39,940 INFO L514 BasicCegarLoop]: trace histogram [39, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:23:39,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-03-15 17:23:40,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-03-15 17:23:40,158 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:23:40,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:40,159 INFO L85 PathProgramCache]: Analyzing trace with hash -534329295, now seen corresponding path program 38 times [2022-03-15 17:23:40,159 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:40,159 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174115551] [2022-03-15 17:23:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:40,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:40,845 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:40,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174115551] [2022-03-15 17:23:40,845 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174115551] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:40,845 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1513595186] [2022-03-15 17:23:40,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-15 17:23:40,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:40,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:40,848 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:40,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-03-15 17:23:41,129 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-15 17:23:41,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:41,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 41 conjunts are in the unsatisfiable core [2022-03-15 17:23:41,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:41,224 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:41,225 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:42,769 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1513595186] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:42,769 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:42,769 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41, 41] total 82 [2022-03-15 17:23:42,769 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [791433555] [2022-03-15 17:23:42,770 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:42,774 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:42,791 INFO L252 McrAutomatonBuilder]: Finished intersection with 49 states and 48 transitions. [2022-03-15 17:23:42,791 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:42,791 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:23:42,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-03-15 17:23:42,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-03-15 17:23:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 17:23:42,793 INFO L87 Difference]: Start difference. First operand 69 states and 95 transitions. Second operand has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:42,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:42,850 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2022-03-15 17:23:42,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-03-15 17:23:42,850 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-03-15 17:23:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:42,850 INFO L225 Difference]: With dead ends: 70 [2022-03-15 17:23:42,851 INFO L226 Difference]: Without dead ends: 70 [2022-03-15 17:23:42,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3403, Invalid=3403, Unknown=0, NotChecked=0, Total=6806 [2022-03-15 17:23:42,851 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:42,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 2 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:23:42,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-03-15 17:23:42,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-03-15 17:23:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.391304347826087) internal successors, (96), 69 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:42,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2022-03-15 17:23:42,853 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 48 [2022-03-15 17:23:42,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:42,853 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2022-03-15 17:23:42,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:42,854 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2022-03-15 17:23:42,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-03-15 17:23:42,854 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:42,854 INFO L514 BasicCegarLoop]: trace histogram [40, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:23:42,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-03-15 17:23:43,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2022-03-15 17:23:43,072 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:23:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:43,072 INFO L85 PathProgramCache]: Analyzing trace with hash -636556370, now seen corresponding path program 39 times [2022-03-15 17:23:43,072 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:43,072 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222415223] [2022-03-15 17:23:43,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:43,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:43,792 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:43,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222415223] [2022-03-15 17:23:43,792 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222415223] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:43,792 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864014756] [2022-03-15 17:23:43,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-03-15 17:23:43,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:43,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:43,793 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:43,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-03-15 17:23:47,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s) [2022-03-15 17:23:47,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:47,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 42 conjunts are in the unsatisfiable core [2022-03-15 17:23:47,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:47,635 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:49,258 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:49,259 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864014756] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:49,259 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:49,259 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 84 [2022-03-15 17:23:49,259 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [398914183] [2022-03-15 17:23:49,259 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:49,264 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:49,286 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 49 transitions. [2022-03-15 17:23:49,286 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:49,286 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:23:49,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-03-15 17:23:49,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:49,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-03-15 17:23:49,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 17:23:49,289 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:49,348 INFO L93 Difference]: Finished difference Result 71 states and 97 transitions. [2022-03-15 17:23:49,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-03-15 17:23:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2022-03-15 17:23:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:49,349 INFO L225 Difference]: With dead ends: 71 [2022-03-15 17:23:49,349 INFO L226 Difference]: Without dead ends: 71 [2022-03-15 17:23:49,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3570, Invalid=3570, Unknown=0, NotChecked=0, Total=7140 [2022-03-15 17:23:49,349 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 99 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:49,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 2 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:23:49,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-03-15 17:23:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-03-15 17:23:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.3857142857142857) internal successors, (97), 70 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2022-03-15 17:23:49,351 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 49 [2022-03-15 17:23:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:49,351 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2022-03-15 17:23:49,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 42 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:49,351 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2022-03-15 17:23:49,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-03-15 17:23:49,352 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:49,352 INFO L514 BasicCegarLoop]: trace histogram [41, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:23:49,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-03-15 17:23:49,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:49,571 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:23:49,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:49,572 INFO L85 PathProgramCache]: Analyzing trace with hash 489371601, now seen corresponding path program 40 times [2022-03-15 17:23:49,572 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:49,572 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669550204] [2022-03-15 17:23:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:49,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:49,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:50,211 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:50,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669550204] [2022-03-15 17:23:50,211 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669550204] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:50,211 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639929696] [2022-03-15 17:23:50,211 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-03-15 17:23:50,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:50,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:50,212 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:50,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-03-15 17:23:50,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-03-15 17:23:50,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:23:50,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 43 conjunts are in the unsatisfiable core [2022-03-15 17:23:50,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:23:50,545 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:50,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:23:52,215 INFO L134 CoverageAnalysis]: Checked inductivity of 864 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:52,215 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639929696] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:23:52,215 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:23:52,215 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43, 43] total 86 [2022-03-15 17:23:52,215 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2032978441] [2022-03-15 17:23:52,215 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:23:52,223 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:23:52,242 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 50 transitions. [2022-03-15 17:23:52,242 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:23:52,243 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:23:52,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-03-15 17:23:52,243 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:23:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-03-15 17:23:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 17:23:52,244 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:52,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:23:52,305 INFO L93 Difference]: Finished difference Result 72 states and 98 transitions. [2022-03-15 17:23:52,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-03-15 17:23:52,306 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2022-03-15 17:23:52,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:23:52,306 INFO L225 Difference]: With dead ends: 72 [2022-03-15 17:23:52,306 INFO L226 Difference]: Without dead ends: 72 [2022-03-15 17:23:52,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=3741, Invalid=3741, Unknown=0, NotChecked=0, Total=7482 [2022-03-15 17:23:52,307 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 81 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 17:23:52,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 2 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 17:23:52,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2022-03-15 17:23:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2022-03-15 17:23:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 71 states have (on average 1.380281690140845) internal successors, (98), 71 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:52,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2022-03-15 17:23:52,310 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 50 [2022-03-15 17:23:52,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:23:52,310 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2022-03-15 17:23:52,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:23:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2022-03-15 17:23:52,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-03-15 17:23:52,310 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:23:52,310 INFO L514 BasicCegarLoop]: trace histogram [42, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:23:52,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-03-15 17:23:52,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:52,535 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:23:52,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:23:52,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1033400334, now seen corresponding path program 41 times [2022-03-15 17:23:52,537 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:23:52,537 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651867003] [2022-03-15 17:23:52,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:23:52,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:23:52,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:23:53,297 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:23:53,297 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:23:53,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651867003] [2022-03-15 17:23:53,297 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651867003] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:23:53,297 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287126405] [2022-03-15 17:23:53,298 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-03-15 17:23:53,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:23:53,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:23:53,299 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:23:53,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-03-15 17:24:03,055 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s) [2022-03-15 17:24:03,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-15 17:24:03,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 44 conjunts are in the unsatisfiable core [2022-03-15 17:24:03,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-15 17:24:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:24:03,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-15 17:24:05,026 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:24:05,027 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287126405] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-15 17:24:05,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-15 17:24:05,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44, 44] total 88 [2022-03-15 17:24:05,027 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1460437025] [2022-03-15 17:24:05,027 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:24:05,033 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:24:05,051 INFO L252 McrAutomatonBuilder]: Finished intersection with 52 states and 51 transitions. [2022-03-15 17:24:05,051 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 17:24:05,051 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 17:24:05,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-03-15 17:24:05,051 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 17:24:05,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-03-15 17:24:05,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2022-03-15 17:24:05,053 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 17:24:05,106 INFO L93 Difference]: Finished difference Result 73 states and 99 transitions. [2022-03-15 17:24:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-03-15 17:24:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2022-03-15 17:24:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 17:24:05,106 INFO L225 Difference]: With dead ends: 73 [2022-03-15 17:24:05,106 INFO L226 Difference]: Without dead ends: 73 [2022-03-15 17:24:05,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=3916, Invalid=3916, Unknown=0, NotChecked=0, Total=7832 [2022-03-15 17:24:05,107 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 90 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-15 17:24:05,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 2 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-15 17:24:05,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-03-15 17:24:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2022-03-15 17:24:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.375) internal successors, (99), 72 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:05,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2022-03-15 17:24:05,112 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 51 [2022-03-15 17:24:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 17:24:05,113 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2022-03-15 17:24:05,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 1.0888888888888888) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 17:24:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2022-03-15 17:24:05,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-03-15 17:24:05,114 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 17:24:05,114 INFO L514 BasicCegarLoop]: trace histogram [43, 2, 2, 1, 1, 1, 1, 1] [2022-03-15 17:24:05,138 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2022-03-15 17:24:05,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-03-15 17:24:05,319 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thread_routineErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-15 17:24:05,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 17:24:05,320 INFO L85 PathProgramCache]: Analyzing trace with hash 718421873, now seen corresponding path program 42 times [2022-03-15 17:24:05,320 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 17:24:05,320 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716790630] [2022-03-15 17:24:05,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 17:24:05,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 17:24:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 17:24:05,993 INFO L134 CoverageAnalysis]: Checked inductivity of 949 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-03-15 17:24:05,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 17:24:05,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716790630] [2022-03-15 17:24:05,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716790630] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-15 17:24:05,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297912698] [2022-03-15 17:24:05,993 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-03-15 17:24:05,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-15 17:24:05,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 17:24:05,994 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-15 17:24:05,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process Received shutdown request... [2022-03-15 17:35:06,777 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 [2022-03-15 17:35:06,778 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-03-15 17:35:07,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2022-03-15 17:35:07,982 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forcibly destroying the process [2022-03-15 17:35:08,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 137 [2022-03-15 17:35:08,027 WARN L317 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-15 17:35:08,027 INFO L191 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-03-15 17:35:08,027 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-03-15 17:35:08,028 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [710888445] [2022-03-15 17:35:08,028 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 17:35:08,034 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 17:35:08,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-03-15 17:35:08,036 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpAbStrategyModuleMcr.buildInterpolantAutomaton(IpAbStrategyModuleMcr.java:50) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:941) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:182) at de.uni_freiburg.informatik.ultimate.lib.mcr.McrAutomatonBuilder.intersectNwa(McrAutomatonBuilder.java:251) at de.uni_freiburg.informatik.ultimate.lib.mcr.McrAutomatonBuilder.buildMcrAutomaton(McrAutomatonBuilder.java:244) at de.uni_freiburg.informatik.ultimate.lib.mcr.McrAutomatonBuilder.buildInterpolantAutomaton(McrAutomatonBuilder.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpAbStrategyModuleMcr.buildInterpolantAutomaton(IpAbStrategyModuleMcr.java:47) ... 23 more [2022-03-15 17:35:08,037 INFO L158 Benchmark]: Toolchain (without parser) took 865508.21ms. Allocated memory was 183.5MB in the beginning and 266.3MB in the end (delta: 82.8MB). Free memory was 130.6MB in the beginning and 181.8MB in the end (delta: -51.3MB). Peak memory consumption was 32.3MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,037 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-15 17:35:08,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.11ms. Allocated memory was 183.5MB in the beginning and 221.2MB in the end (delta: 37.7MB). Free memory was 130.4MB in the beginning and 176.6MB in the end (delta: -46.2MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,038 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.92ms. Allocated memory is still 221.2MB. Free memory was 176.6MB in the beginning and 174.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,038 INFO L158 Benchmark]: Boogie Preprocessor took 46.79ms. Allocated memory is still 221.2MB. Free memory was 174.1MB in the beginning and 172.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,038 INFO L158 Benchmark]: RCFGBuilder took 487.56ms. Allocated memory is still 221.2MB. Free memory was 172.5MB in the beginning and 157.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,038 INFO L158 Benchmark]: TraceAbstraction took 864420.81ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 157.3MB in the beginning and 181.8MB in the end (delta: -24.6MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. [2022-03-15 17:35:08,039 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 183.5MB. Free memory is still 149.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 495.11ms. Allocated memory was 183.5MB in the beginning and 221.2MB in the end (delta: 37.7MB). Free memory was 130.4MB in the beginning and 176.6MB in the end (delta: -46.2MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.92ms. Allocated memory is still 221.2MB. Free memory was 176.6MB in the beginning and 174.1MB in the end (delta: 2.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 46.79ms. Allocated memory is still 221.2MB. Free memory was 174.1MB in the beginning and 172.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 487.56ms. Allocated memory is still 221.2MB. Free memory was 172.5MB in the beginning and 157.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 864420.81ms. Allocated memory was 221.2MB in the beginning and 266.3MB in the end (delta: 45.1MB). Free memory was 157.3MB in the beginning and 181.8MB in the end (delta: -24.6MB). Peak memory consumption was 22.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 111 PlacesBefore, 20 PlacesAfterwards, 122 TransitionsBefore, 23 TransitionsAfterwards, 3240 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 11 ConcurrentYvCompositions, 8 ChoiceCompositions, 118 TotalNumberOfCompositions, 2929 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2513, positive: 2468, positive conditional: 0, positive unconditional: 2468, negative: 45, negative conditional: 0, negative unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1641, positive: 1626, positive conditional: 0, positive unconditional: 1626, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2513, positive: 842, positive conditional: 0, positive unconditional: 842, negative: 30, negative conditional: 0, negative unconditional: 30, unknown: 1641, unknown conditional: 0, unknown unconditional: 1641] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 29, Positive conditional cache size: 0, Positive unconditional cache size: 29, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6 - ExceptionOrErrorResult: RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: RuntimeException: de.uni_freiburg.informatik.ultimate.automata.AutomataOperationCanceledException: Timeout or canceled by user.: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpAbStrategyModuleMcr.buildInterpolantAutomaton(IpAbStrategyModuleMcr.java:50) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown