/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 23:16:39,098 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 23:16:39,100 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 23:16:39,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 23:16:39,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 23:16:39,126 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 23:16:39,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 23:16:39,129 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 23:16:39,130 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 23:16:39,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 23:16:39,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 23:16:39,133 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 23:16:39,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 23:16:39,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 23:16:39,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 23:16:39,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 23:16:39,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 23:16:39,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 23:16:39,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 23:16:39,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 23:16:39,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 23:16:39,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 23:16:39,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 23:16:39,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 23:16:39,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 23:16:39,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 23:16:39,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 23:16:39,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 23:16:39,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 23:16:39,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 23:16:39,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 23:16:39,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 23:16:39,165 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 23:16:39,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 23:16:39,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 23:16:39,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 23:16:39,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2020-10-15 23:16:39,214 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 23:16:39,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 23:16:39,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 23:16:39,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 23:16:39,219 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 23:16:39,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 23:16:39,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 23:16:39,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 23:16:39,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 23:16:39,220 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 23:16:39,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 23:16:39,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 23:16:39,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 23:16:39,220 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 23:16:39,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 23:16:39,221 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 23:16:39,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 23:16:39,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 23:16:39,221 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 23:16:39,221 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 23:16:39,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 23:16:39,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:16:39,222 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 23:16:39,222 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 23:16:39,222 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 23:16:39,223 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 23:16:39,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 23:16:39,223 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 23:16:39,223 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 23:16:39,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 23:16:39,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 23:16:39,518 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 23:16:39,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 23:16:39,520 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 23:16:39,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-15 23:16:39,580 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba34c398f/e165dd361679473c85c71fef6f2bb3d6/FLAG94e4ece31 [2020-10-15 23:16:39,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 23:16:39,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-15 23:16:39,987 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 23:16:39,987 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-15 23:16:40,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba34c398f/e165dd361679473c85c71fef6f2bb3d6/FLAG94e4ece31 [2020-10-15 23:16:40,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ba34c398f/e165dd361679473c85c71fef6f2bb3d6 [2020-10-15 23:16:40,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 23:16:40,418 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 23:16:40,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 23:16:40,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 23:16:40,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 23:16:40,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f9e72cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40, skipping insertion in model container [2020-10-15 23:16:40,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 23:16:40,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 23:16:40,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:16:40,741 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 23:16:40,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 23:16:40,778 INFO L208 MainTranslator]: Completed translation [2020-10-15 23:16:40,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40 WrapperNode [2020-10-15 23:16:40,779 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 23:16:40,779 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 23:16:40,780 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 23:16:40,780 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 23:16:40,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,798 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,823 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 23:16:40,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 23:16:40,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 23:16:40,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 23:16:40,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... [2020-10-15 23:16:40,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 23:16:40,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 23:16:40,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 23:16:40,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 23:16:40,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 23:16:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 23:16:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-15 23:16:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-15 23:16:40,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 23:16:40,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 23:16:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-15 23:16:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-15 23:16:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 23:16:40,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 23:16:40,918 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 23:16:41,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 23:16:41,317 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-15 23:16:41,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:16:41 BoogieIcfgContainer [2020-10-15 23:16:41,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 23:16:41,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 23:16:41,322 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 23:16:41,330 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 23:16:41,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 11:16:40" (1/3) ... [2020-10-15 23:16:41,331 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fec03d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:16:41, skipping insertion in model container [2020-10-15 23:16:41,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 11:16:40" (2/3) ... [2020-10-15 23:16:41,332 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fec03d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 11:16:41, skipping insertion in model container [2020-10-15 23:16:41,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 11:16:41" (3/3) ... [2020-10-15 23:16:41,334 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-15 23:16:41,348 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 23:16:41,348 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 23:16:41,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 23:16:41,358 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 23:16:41,424 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,425 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,425 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,425 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,425 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,426 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,426 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,426 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,426 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,426 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,426 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,429 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,429 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,430 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,430 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,430 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,430 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,430 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,431 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,431 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,431 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,431 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,431 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,432 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,432 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,432 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,432 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,432 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,433 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,433 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,433 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,434 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,434 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,434 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,434 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,435 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,435 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,435 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,436 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,437 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,437 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,437 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,438 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,438 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,438 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,439 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,439 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,439 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,439 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,439 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,440 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,440 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,440 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,440 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,441 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,441 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,441 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,442 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,442 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,442 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,442 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,442 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,443 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,443 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,443 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,443 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,443 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,444 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,444 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,444 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,445 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,450 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,451 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,451 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,451 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,452 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,452 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,452 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,452 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,452 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,459 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,459 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,459 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,459 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,460 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,461 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,461 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,461 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,463 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,464 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,464 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,464 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,465 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,474 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,474 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,474 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,474 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,475 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,475 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,475 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,475 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,475 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,476 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,476 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 23:16:41,500 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 23:16:41,518 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 23:16:41,518 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 23:16:41,519 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 23:16:41,519 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 23:16:41,519 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 23:16:41,519 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 23:16:41,519 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 23:16:41,519 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 23:16:41,535 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 23:16:41,537 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-15 23:16:41,540 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-15 23:16:41,542 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-15 23:16:41,618 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-15 23:16:41,618 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-15 23:16:41,624 INFO L80 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 138 events. 9/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 159 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 71. Up to 3 conditions per place. [2020-10-15 23:16:41,628 INFO L117 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-15 23:16:43,835 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-15 23:16:43,955 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-15 23:16:44,716 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-15 23:16:44,723 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-15 23:16:44,724 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:16:45,226 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-15 23:16:45,403 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-15 23:16:45,632 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-15 23:16:45,831 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-15 23:16:45,839 INFO L132 LiptonReduction]: Checked pairs total: 4040 [2020-10-15 23:16:45,839 INFO L134 LiptonReduction]: Total number of compositions: 125 [2020-10-15 23:16:45,845 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-15 23:16:45,860 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-15 23:16:45,863 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-15 23:16:45,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 23:16:45,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:45,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:45,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:16:45,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:45,879 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-15 23:16:45,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:45,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110521402] [2020-10-15 23:16:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:46,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:46,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110521402] [2020-10-15 23:16:46,109 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:46,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 23:16:46,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673235014] [2020-10-15 23:16:46,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 23:16:46,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 23:16:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 23:16:46,133 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-15 23:16:46,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:46,246 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-15 23:16:46,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 23:16:46,248 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-15 23:16:46,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:46,261 INFO L225 Difference]: With dead ends: 126 [2020-10-15 23:16:46,262 INFO L226 Difference]: Without dead ends: 104 [2020-10-15 23:16:46,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-15 23:16:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-15 23:16:46,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-15 23:16:46,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-15 23:16:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-15 23:16:46,311 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-15 23:16:46,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:46,312 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-15 23:16:46,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 23:16:46,312 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-15 23:16:46,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-15 23:16:46,314 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:46,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:46,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 23:16:46,315 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:16:46,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:46,316 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-15 23:16:46,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:46,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721584317] [2020-10-15 23:16:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:46,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:46,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721584317] [2020-10-15 23:16:46,471 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:46,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 23:16:46,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056700271] [2020-10-15 23:16:46,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 23:16:46,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:46,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 23:16:46,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:16:46,474 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-15 23:16:46,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:46,503 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-15 23:16:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 23:16:46,503 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-15 23:16:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:46,506 INFO L225 Difference]: With dead ends: 170 [2020-10-15 23:16:46,506 INFO L226 Difference]: Without dead ends: 163 [2020-10-15 23:16:46,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 23:16:46,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-15 23:16:46,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-15 23:16:46,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-15 23:16:46,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-15 23:16:46,525 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-15 23:16:46,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:46,525 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-15 23:16:46,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 23:16:46,525 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-15 23:16:46,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-15 23:16:46,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:46,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:46,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 23:16:46,528 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:16:46,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:46,528 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-15 23:16:46,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:46,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617721822] [2020-10-15 23:16:46,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:46,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:46,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617721822] [2020-10-15 23:16:46,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6235110] [2020-10-15 23:16:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:16:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:46,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-15 23:16:46,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:16:46,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:46,884 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:16:46,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-15 23:16:46,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851754690] [2020-10-15 23:16:46,885 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-15 23:16:46,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:46,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-15 23:16:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-15 23:16:46,886 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-15 23:16:47,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:47,076 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-15 23:16:47,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 23:16:47,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-15 23:16:47,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:47,079 INFO L225 Difference]: With dead ends: 202 [2020-10-15 23:16:47,079 INFO L226 Difference]: Without dead ends: 158 [2020-10-15 23:16:47,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-15 23:16:47,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-15 23:16:47,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-15 23:16:47,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 23:16:47,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-15 23:16:47,092 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-15 23:16:47,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:47,092 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-15 23:16:47,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-15 23:16:47,092 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-15 23:16:47,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 23:16:47,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:47,094 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:47,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-15 23:16:47,309 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:16:47,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:47,309 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-15 23:16:47,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:47,309 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586318174] [2020-10-15 23:16:47,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:47,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:47,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586318174] [2020-10-15 23:16:47,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:47,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:16:47,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765968099] [2020-10-15 23:16:47,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 23:16:47,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:47,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 23:16:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 23:16:47,900 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-15 23:16:48,144 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 23:16:48,350 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 23:16:48,635 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 23:16:48,956 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-15 23:16:49,308 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-15 23:16:49,636 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-15 23:16:49,817 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-15 23:16:50,088 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-15 23:16:50,470 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-15 23:16:50,738 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-15 23:16:51,190 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-15 23:16:51,428 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-15 23:16:51,689 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-15 23:16:52,075 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-15 23:16:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:52,182 INFO L93 Difference]: Finished difference Result 305 states and 837 transitions. [2020-10-15 23:16:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 23:16:52,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 23:16:52,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:52,186 INFO L225 Difference]: With dead ends: 305 [2020-10-15 23:16:52,186 INFO L226 Difference]: Without dead ends: 245 [2020-10-15 23:16:52,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-10-15 23:16:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-15 23:16:52,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 110. [2020-10-15 23:16:52,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-15 23:16:52,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 288 transitions. [2020-10-15 23:16:52,198 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 288 transitions. Word has length 20 [2020-10-15 23:16:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:52,198 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 288 transitions. [2020-10-15 23:16:52,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 23:16:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 288 transitions. [2020-10-15 23:16:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 23:16:52,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:52,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:52,200 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 23:16:52,200 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:16:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-15 23:16:52,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:52,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379581812] [2020-10-15 23:16:52,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:52,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:52,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379581812] [2020-10-15 23:16:52,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:52,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:16:52,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263187420] [2020-10-15 23:16:52,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 23:16:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 23:16:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 23:16:52,819 INFO L87 Difference]: Start difference. First operand 110 states and 288 transitions. Second operand 10 states. [2020-10-15 23:16:53,086 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 23:16:53,300 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 23:16:53,550 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 23:16:53,904 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-15 23:16:54,323 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-15 23:16:54,824 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-15 23:16:55,123 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-15 23:16:55,335 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-15 23:16:55,608 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-15 23:16:55,897 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-15 23:16:56,312 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-15 23:16:56,748 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-15 23:16:57,063 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-15 23:16:57,379 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-15 23:16:57,738 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-15 23:16:57,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:16:57,811 INFO L93 Difference]: Finished difference Result 414 states and 1136 transitions. [2020-10-15 23:16:57,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 23:16:57,811 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 23:16:57,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:16:57,815 INFO L225 Difference]: With dead ends: 414 [2020-10-15 23:16:57,815 INFO L226 Difference]: Without dead ends: 382 [2020-10-15 23:16:57,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-15 23:16:57,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-15 23:16:57,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 116. [2020-10-15 23:16:57,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-15 23:16:57,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 301 transitions. [2020-10-15 23:16:57,827 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 301 transitions. Word has length 20 [2020-10-15 23:16:57,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:16:57,827 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 301 transitions. [2020-10-15 23:16:57,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 23:16:57,827 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 301 transitions. [2020-10-15 23:16:57,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 23:16:57,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:16:57,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:16:57,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 23:16:57,829 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:16:57,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:16:57,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-15 23:16:57,830 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:16:57,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243352946] [2020-10-15 23:16:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:16:57,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:16:58,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:16:58,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243352946] [2020-10-15 23:16:58,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:16:58,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:16:58,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445885472] [2020-10-15 23:16:58,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 23:16:58,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:16:58,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 23:16:58,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 23:16:58,417 INFO L87 Difference]: Start difference. First operand 116 states and 301 transitions. Second operand 10 states. [2020-10-15 23:16:58,657 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 23:16:58,871 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 23:16:59,144 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 23:16:59,530 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-15 23:17:00,011 WARN L193 SmtUtils]: Spent 400.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-15 23:17:00,580 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-15 23:17:00,874 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-15 23:17:01,089 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-15 23:17:01,349 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-15 23:17:01,751 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-15 23:17:02,223 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-15 23:17:02,628 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-15 23:17:02,877 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-15 23:17:03,013 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-15 23:17:03,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:03,075 INFO L93 Difference]: Finished difference Result 320 states and 886 transitions. [2020-10-15 23:17:03,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-15 23:17:03,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 23:17:03,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:03,078 INFO L225 Difference]: With dead ends: 320 [2020-10-15 23:17:03,078 INFO L226 Difference]: Without dead ends: 318 [2020-10-15 23:17:03,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-15 23:17:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-15 23:17:03,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 118. [2020-10-15 23:17:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-15 23:17:03,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2020-10-15 23:17:03,094 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 20 [2020-10-15 23:17:03,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:03,098 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2020-10-15 23:17:03,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 23:17:03,098 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2020-10-15 23:17:03,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 23:17:03,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:03,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:03,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 23:17:03,102 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:03,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:03,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-15 23:17:03,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:03,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33755373] [2020-10-15 23:17:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:03,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:03,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:03,737 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33755373] [2020-10-15 23:17:03,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 23:17:03,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-15 23:17:03,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982222911] [2020-10-15 23:17:03,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 23:17:03,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:03,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 23:17:03,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-15 23:17:03,739 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand 10 states. [2020-10-15 23:17:03,973 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-15 23:17:04,183 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-15 23:17:04,451 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-15 23:17:04,735 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-15 23:17:05,078 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-15 23:17:05,338 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-15 23:17:05,661 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-10-15 23:17:06,096 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-15 23:17:06,504 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2020-10-15 23:17:06,962 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-15 23:17:07,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:07,073 INFO L93 Difference]: Finished difference Result 278 states and 749 transitions. [2020-10-15 23:17:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-15 23:17:07,074 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-15 23:17:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:07,077 INFO L225 Difference]: With dead ends: 278 [2020-10-15 23:17:07,077 INFO L226 Difference]: Without dead ends: 278 [2020-10-15 23:17:07,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-15 23:17:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-15 23:17:07,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122. [2020-10-15 23:17:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-15 23:17:07,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2020-10-15 23:17:07,088 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 20 [2020-10-15 23:17:07,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:07,088 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2020-10-15 23:17:07,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 23:17:07,089 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2020-10-15 23:17:07,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-15 23:17:07,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:07,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:07,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 23:17:07,090 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-15 23:17:07,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:07,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929441583] [2020-10-15 23:17:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:07,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929441583] [2020-10-15 23:17:07,393 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018370921] [2020-10-15 23:17:07,393 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:07,462 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:17:07,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:07,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-15 23:17:07,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:07,523 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:17:07,524 INFO L384 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 71 treesize of output 75 [2020-10-15 23:17:07,526 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-15 23:17:07,527 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:17:07,529 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:17:07,530 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:17:07,540 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-15 23:17:07,643 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-15 23:17:07,644 INFO L625 ElimStorePlain]: treesize reduction 97, result has 37.0 percent of original size [2020-10-15 23:17:07,654 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2020-10-15 23:17:07,655 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-15 23:17:07,683 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:17:07,684 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:17:07,684 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:53 [2020-10-15 23:17:07,808 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2020-10-15 23:17:07,809 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:17:07,836 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:17:07,842 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:17:07,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:60 [2020-10-15 23:17:08,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:08,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:08,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2020-10-15 23:17:08,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333200814] [2020-10-15 23:17:08,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 23:17:08,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:08,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 23:17:08,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-15 23:17:08,425 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand 17 states. [2020-10-15 23:17:09,257 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-15 23:17:09,583 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-15 23:17:09,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:09,923 INFO L93 Difference]: Finished difference Result 243 states and 654 transitions. [2020-10-15 23:17:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-15 23:17:09,923 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-15 23:17:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:09,925 INFO L225 Difference]: With dead ends: 243 [2020-10-15 23:17:09,925 INFO L226 Difference]: Without dead ends: 224 [2020-10-15 23:17:09,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-15 23:17:09,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-15 23:17:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 176. [2020-10-15 23:17:09,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-15 23:17:09,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 481 transitions. [2020-10-15 23:17:09,934 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 481 transitions. Word has length 20 [2020-10-15 23:17:09,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:09,936 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 481 transitions. [2020-10-15 23:17:09,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-15 23:17:09,936 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 481 transitions. [2020-10-15 23:17:09,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 23:17:09,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:09,937 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:10,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:10,142 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:10,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:10,143 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-15 23:17:10,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:10,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425841387] [2020-10-15 23:17:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:10,441 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:10,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425841387] [2020-10-15 23:17:10,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934788141] [2020-10-15 23:17:10,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:10,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-15 23:17:10,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:10,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:10,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 11 [2020-10-15 23:17:10,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084094314] [2020-10-15 23:17:10,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-15 23:17:10,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:10,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-15 23:17:10,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-15 23:17:10,579 INFO L87 Difference]: Start difference. First operand 176 states and 481 transitions. Second operand 13 states. [2020-10-15 23:17:11,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:11,815 INFO L93 Difference]: Finished difference Result 491 states and 1335 transitions. [2020-10-15 23:17:11,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-15 23:17:11,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-15 23:17:11,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:11,817 INFO L225 Difference]: With dead ends: 491 [2020-10-15 23:17:11,817 INFO L226 Difference]: Without dead ends: 109 [2020-10-15 23:17:11,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-10-15 23:17:11,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-15 23:17:11,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-10-15 23:17:11,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-15 23:17:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2020-10-15 23:17:11,822 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 22 [2020-10-15 23:17:11,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:11,823 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2020-10-15 23:17:11,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-15 23:17:11,823 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2020-10-15 23:17:11,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-15 23:17:11,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:11,824 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:12,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:12,037 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:12,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:12,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1587846356, now seen corresponding path program 2 times [2020-10-15 23:17:12,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:12,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925477754] [2020-10-15 23:17:12,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:12,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925477754] [2020-10-15 23:17:12,298 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183326700] [2020-10-15 23:17:12,298 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:12,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-15 23:17:12,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:12,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-15 23:17:12,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:12,375 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 43 [2020-10-15 23:17:12,377 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:17:12,418 INFO L625 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-10-15 23:17:12,420 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:17:12,420 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-15 23:17:12,492 INFO L384 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 23 treesize of output 22 [2020-10-15 23:17:12,493 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:17:12,499 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:17:12,500 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:17:12,501 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-15 23:17:12,596 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 23:17:12,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:12,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-15 23:17:12,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895255650] [2020-10-15 23:17:12,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 23:17:12,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:12,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 23:17:12,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-15 23:17:12,598 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand 14 states. [2020-10-15 23:17:13,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:13,771 INFO L93 Difference]: Finished difference Result 187 states and 417 transitions. [2020-10-15 23:17:13,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 23:17:13,772 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-15 23:17:13,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:13,772 INFO L225 Difference]: With dead ends: 187 [2020-10-15 23:17:13,772 INFO L226 Difference]: Without dead ends: 56 [2020-10-15 23:17:13,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-15 23:17:13,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-15 23:17:13,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-15 23:17:13,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-15 23:17:13,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-15 23:17:13,775 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 22 [2020-10-15 23:17:13,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:13,776 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-15 23:17:13,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 23:17:13,776 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-15 23:17:13,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-15 23:17:13,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 23:17:13,777 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 23:17:13,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:13,984 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-15 23:17:13,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 23:17:13,985 INFO L82 PathProgramCache]: Analyzing trace with hash -1188207356, now seen corresponding path program 3 times [2020-10-15 23:17:13,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 23:17:13,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175689121] [2020-10-15 23:17:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 23:17:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 23:17:14,296 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 23:17:14,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175689121] [2020-10-15 23:17:14,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143071169] [2020-10-15 23:17:14,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-15 23:17:14,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-15 23:17:14,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-15 23:17:14,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-15 23:17:14,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-15 23:17:14,399 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:17:14,399 INFO L384 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 68 treesize of output 72 [2020-10-15 23:17:14,400 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:17:14,403 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-15 23:17:14,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:17:14,408 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-15 23:17:14,417 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:17:14,468 INFO L625 ElimStorePlain]: treesize reduction 139, result has 13.7 percent of original size [2020-10-15 23:17:14,470 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-15 23:17:14,470 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2020-10-15 23:17:14,562 INFO L384 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 23 treesize of output 22 [2020-10-15 23:17:14,564 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-15 23:17:14,571 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-15 23:17:14,572 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-15 23:17:14,573 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-15 23:17:14,629 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-15 23:17:14,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-15 23:17:14,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 13 [2020-10-15 23:17:14,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527572607] [2020-10-15 23:17:14,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-15 23:17:14,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 23:17:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-15 23:17:14,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-15 23:17:14,633 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 15 states. [2020-10-15 23:17:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 23:17:16,209 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-10-15 23:17:16,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-15 23:17:16,210 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-10-15 23:17:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 23:17:16,211 INFO L225 Difference]: With dead ends: 104 [2020-10-15 23:17:16,211 INFO L226 Difference]: Without dead ends: 0 [2020-10-15 23:17:16,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2020-10-15 23:17:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-15 23:17:16,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-15 23:17:16,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-15 23:17:16,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-15 23:17:16,213 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-15 23:17:16,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 23:17:16,213 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-15 23:17:16,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-15 23:17:16,213 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-15 23:17:16,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-15 23:17:16,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-15 23:17:16,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 11:17:16 BasicIcfg [2020-10-15 23:17:16,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 23:17:16,421 INFO L168 Benchmark]: Toolchain (without parser) took 36002.67 ms. Allocated memory was 252.7 MB in the beginning and 588.3 MB in the end (delta: 335.5 MB). Free memory was 207.2 MB in the beginning and 278.7 MB in the end (delta: -71.5 MB). Peak memory consumption was 264.1 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,421 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.30 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.2 MB in the beginning and 291.3 MB in the end (delta: -84.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,422 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 318.2 MB. Free memory was 291.3 MB in the beginning and 289.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,423 INFO L168 Benchmark]: Boogie Preprocessor took 28.49 ms. Allocated memory is still 318.2 MB. Free memory was 289.6 MB in the beginning and 287.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,424 INFO L168 Benchmark]: RCFGBuilder took 468.88 ms. Allocated memory is still 318.2 MB. Free memory was 287.9 MB in the beginning and 259.2 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,425 INFO L168 Benchmark]: TraceAbstraction took 35097.57 ms. Allocated memory was 318.2 MB in the beginning and 588.3 MB in the end (delta: 270.0 MB). Free memory was 259.2 MB in the beginning and 278.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 250.4 MB. Max. memory is 14.2 GB. [2020-10-15 23:17:16,431 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 252.7 MB. Free memory was 230.8 MB in the beginning and 229.9 MB in the end (delta: 838.9 kB). Peak memory consumption was 838.9 kB. Max. memory is 14.2 GB. * CACSL2BoogieTranslator took 359.30 ms. Allocated memory was 252.7 MB in the beginning and 318.2 MB in the end (delta: 65.5 MB). Free memory was 207.2 MB in the beginning and 291.3 MB in the end (delta: -84.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 14.2 GB. * Boogie Procedure Inliner took 43.37 ms. Allocated memory is still 318.2 MB. Free memory was 291.3 MB in the beginning and 289.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * Boogie Preprocessor took 28.49 ms. Allocated memory is still 318.2 MB. Free memory was 289.6 MB in the beginning and 287.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.2 GB. * RCFGBuilder took 468.88 ms. Allocated memory is still 318.2 MB. Free memory was 287.9 MB in the beginning and 259.2 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 14.2 GB. * TraceAbstraction took 35097.57 ms. Allocated memory was 318.2 MB in the beginning and 588.3 MB in the end (delta: 270.0 MB). Free memory was 259.2 MB in the beginning and 278.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 250.4 MB. Max. memory is 14.2 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 1346 VarBasedMoverChecksPositive, 31 VarBasedMoverChecksNegative, 6 SemBasedMoverChecksPositive, 25 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 122 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.2s, 135 PlacesBefore, 31 PlacesAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 7 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 125 TotalNumberOfCompositions, 4040 MoverChecksTotal - PositiveResult [Line: 67]: assertion always holds For all program executions holds that assertion always holds at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 34.8s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 23.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 303 SDtfs, 1726 SDslu, 817 SDs, 0 SdLazy, 2476 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 22.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=176occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 919 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 326 NumberOfCodeBlocks, 322 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 310 ConstructedInterpolants, 40 QuantifiedInterpolants, 139420 SizeOfPredicates, 73 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 194 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 14/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...