/usr/bin/java -Xmx8000000000 -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-21 22:29:01,483 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-21 22:29:01,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-21 22:29:01,535 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-21 22:29:01,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-21 22:29:01,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-21 22:29:01,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-21 22:29:01,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-21 22:29:01,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-21 22:29:01,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-21 22:29:01,558 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-21 22:29:01,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-21 22:29:01,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-21 22:29:01,565 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-21 22:29:01,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-21 22:29:01,569 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-21 22:29:01,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-21 22:29:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-21 22:29:01,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-21 22:29:01,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-21 22:29:01,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-21 22:29:01,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-21 22:29:01,588 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-21 22:29:01,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-21 22:29:01,591 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-21 22:29:01,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-21 22:29:01,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-21 22:29:01,595 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-21 22:29:01,596 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-21 22:29:01,597 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-21 22:29:01,597 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-21 22:29:01,597 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-21 22:29:01,598 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-21 22:29:01,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-21 22:29:01,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-21 22:29:01,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-21 22:29:01,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-21 22:29:01,622 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-21 22:29:01,623 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-21 22:29:01,624 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-21 22:29:01,624 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-21 22:29:01,624 INFO L138 SettingsManager]: * Use SBE=true [2020-10-21 22:29:01,625 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-21 22:29:01,625 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-21 22:29:01,625 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-21 22:29:01,625 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-21 22:29:01,625 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-21 22:29:01,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-21 22:29:01,626 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-21 22:29:01,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-21 22:29:01,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-21 22:29:01,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-21 22:29:01,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-21 22:29:01,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-21 22:29:01,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-21 22:29:01,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-21 22:29:01,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-21 22:29:01,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-21 22:29:01,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-21 22:29:01,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-21 22:29:01,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-21 22:29:01,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-21 22:29:01,629 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-21 22:29:01,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-21 22:29:01,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-21 22:29:01,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-21 22:29:01,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-21 22:29:01,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-21 22:29:01,957 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-21 22:29:01,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-21 22:29:01,963 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-21 22:29:01,963 INFO L275 PluginConnector]: CDTParser initialized [2020-10-21 22:29:01,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-21 22:29:02,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d590b33/e844d7b5b4c44b5290571d5ac99f5054/FLAG914865617 [2020-10-21 22:29:02,443 INFO L306 CDTParser]: Found 1 translation units. [2020-10-21 22:29:02,444 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-21 22:29:02,444 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-21 22:29:02,445 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-21 22:29:02,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d590b33/e844d7b5b4c44b5290571d5ac99f5054/FLAG914865617 [2020-10-21 22:29:02,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23d590b33/e844d7b5b4c44b5290571d5ac99f5054 [2020-10-21 22:29:02,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-21 22:29:02,893 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-21 22:29:02,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-21 22:29:02,896 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-21 22:29:02,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-21 22:29:02,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:29:02" (1/1) ... [2020-10-21 22:29:02,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20633c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:02, skipping insertion in model container [2020-10-21 22:29:02,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 10:29:02" (1/1) ... [2020-10-21 22:29:02,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-21 22:29:02,937 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-21 22:29:03,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:29:03,250 INFO L203 MainTranslator]: Completed pre-run [2020-10-21 22:29:03,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-21 22:29:03,327 INFO L208 MainTranslator]: Completed translation [2020-10-21 22:29:03,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03 WrapperNode [2020-10-21 22:29:03,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-21 22:29:03,330 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-21 22:29:03,330 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-21 22:29:03,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-21 22:29:03,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,364 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,406 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-21 22:29:03,407 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-21 22:29:03,407 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-21 22:29:03,407 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-21 22:29:03,418 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (1/1) ... [2020-10-21 22:29:03,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-21 22:29:03,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-21 22:29:03,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-21 22:29:03,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-21 22:29:03,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (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 [2020-10-21 22:29:03,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-21 22:29:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-21 22:29:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-21 22:29:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-21 22:29:03,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-21 22:29:03,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-21 22:29:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-21 22:29:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-21 22:29:03,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-21 22:29:03,567 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-21 22:29:03,999 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-21 22:29:04,000 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-21 22:29:04,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:29:04 BoogieIcfgContainer [2020-10-21 22:29:04,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-21 22:29:04,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-21 22:29:04,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-21 22:29:04,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-21 22:29:04,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 10:29:02" (1/3) ... [2020-10-21 22:29:04,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebd4c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:29:04, skipping insertion in model container [2020-10-21 22:29:04,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 10:29:03" (2/3) ... [2020-10-21 22:29:04,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ebd4c55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 10:29:04, skipping insertion in model container [2020-10-21 22:29:04,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 10:29:04" (3/3) ... [2020-10-21 22:29:04,011 INFO L111 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-21 22:29:04,025 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-21 22:29:04,025 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-21 22:29:04,042 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-21 22:29:04,043 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-21 22:29:04,092 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,093 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,093 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,094 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,094 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,094 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,095 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,095 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,095 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,095 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,096 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,096 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,096 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,097 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,097 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,097 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,097 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,098 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,098 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,098 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,098 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,099 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,099 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,099 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,100 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,100 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,100 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,101 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,101 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,101 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,101 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,102 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,102 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,102 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,103 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,103 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,103 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,103 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,104 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,104 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,104 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,105 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,105 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,105 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,105 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,105 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,106 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,106 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,106 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,106 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,107 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,107 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,107 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,107 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,108 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,108 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,108 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,108 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,109 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,109 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,109 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,109 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,110 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,110 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,110 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,110 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,111 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,111 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,111 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,111 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,112 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,112 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,112 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,113 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,113 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,113 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,113 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,114 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,114 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,114 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,118 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,119 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,119 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,119 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,119 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,120 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,120 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,120 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,121 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,121 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,121 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,121 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,122 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,128 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,129 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,129 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,129 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,129 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,130 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,130 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,130 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,130 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,130 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,131 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,131 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,131 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-21 22:29:04,141 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2020-10-21 22:29:04,156 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-21 22:29:04,178 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-21 22:29:04,179 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-21 22:29:04,179 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-21 22:29:04,179 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-21 22:29:04,179 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-21 22:29:04,180 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-21 22:29:04,180 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-21 22:29:04,180 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-21 22:29:04,199 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-21 22:29:04,202 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-21 22:29:04,205 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-21 22:29:04,207 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-21 22:29:04,293 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-21 22:29:04,294 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-21 22:29:04,301 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. [2020-10-21 22:29:04,306 INFO L116 LiptonReduction]: Number of co-enabled transitions 1920 [2020-10-21 22:29:06,683 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-21 22:29:06,839 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-21 22:29:07,295 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-21 22:29:07,667 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-21 22:29:07,675 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-21 22:29:07,676 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:08,255 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-21 22:29:08,453 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-21 22:29:08,700 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-21 22:29:08,938 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-21 22:29:08,947 INFO L131 LiptonReduction]: Checked pairs total: 4040 [2020-10-21 22:29:08,947 INFO L133 LiptonReduction]: Total number of compositions: 125 [2020-10-21 22:29:08,955 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-21 22:29:08,971 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-21 22:29:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-21 22:29:08,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 22:29:08,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:08,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:29:08,985 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:08,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:08,991 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-21 22:29:08,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:09,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993972569] [2020-10-21 22:29:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:09,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:09,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993972569] [2020-10-21 22:29:09,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:29:09,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-21 22:29:09,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599959904] [2020-10-21 22:29:09,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-21 22:29:09,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:09,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-21 22:29:09,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-21 22:29:09,270 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-21 22:29:09,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:09,412 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-21 22:29:09,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-21 22:29:09,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-21 22:29:09,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:09,435 INFO L225 Difference]: With dead ends: 126 [2020-10-21 22:29:09,436 INFO L226 Difference]: Without dead ends: 104 [2020-10-21 22:29:09,437 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 [2020-10-21 22:29:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-21 22:29:09,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-21 22:29:09,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-21 22:29:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-21 22:29:09,490 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-21 22:29:09,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:09,491 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-21 22:29:09,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-21 22:29:09,492 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-21 22:29:09,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-21 22:29:09,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:09,494 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:29:09,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-21 22:29:09,495 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:09,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:09,495 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-21 22:29:09,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:09,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678638581] [2020-10-21 22:29:09,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:09,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:09,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678638581] [2020-10-21 22:29:09,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:29:09,664 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-21 22:29:09,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858077720] [2020-10-21 22:29:09,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-21 22:29:09,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-21 22:29:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-21 22:29:09,670 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-21 22:29:09,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:09,715 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-21 22:29:09,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-21 22:29:09,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-21 22:29:09,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:09,718 INFO L225 Difference]: With dead ends: 170 [2020-10-21 22:29:09,719 INFO L226 Difference]: Without dead ends: 163 [2020-10-21 22:29:09,721 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 [2020-10-21 22:29:09,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-21 22:29:09,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-21 22:29:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-21 22:29:09,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-21 22:29:09,758 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-21 22:29:09,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:09,758 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-21 22:29:09,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-21 22:29:09,758 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-21 22:29:09,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-21 22:29:09,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:09,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-21 22:29:09,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-21 22:29:09,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:09,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:09,767 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-21 22:29:09,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:09,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367001228] [2020-10-21 22:29:09,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:10,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:10,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367001228] [2020-10-21 22:29:10,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667470131] [2020-10-21 22:29:10,071 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 [2020-10-21 22:29:10,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:10,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-21 22:29:10,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:29:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:10,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:29:10,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-21 22:29:10,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691706473] [2020-10-21 22:29:10,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-21 22:29:10,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:10,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-21 22:29:10,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-21 22:29:10,230 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-21 22:29:10,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:10,447 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-21 22:29:10,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-21 22:29:10,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-21 22:29:10,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:10,451 INFO L225 Difference]: With dead ends: 202 [2020-10-21 22:29:10,451 INFO L226 Difference]: Without dead ends: 158 [2020-10-21 22:29:10,452 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 [2020-10-21 22:29:10,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-21 22:29:10,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-21 22:29:10,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-21 22:29:10,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-21 22:29:10,465 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-21 22:29:10,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:10,465 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-21 22:29:10,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-21 22:29:10,465 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-21 22:29:10,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 22:29:10,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:10,467 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] [2020-10-21 22:29:10,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-21 22:29:10,682 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:10,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:10,683 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-21 22:29:10,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:10,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820586864] [2020-10-21 22:29:10,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:11,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:11,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820586864] [2020-10-21 22:29:11,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:29:11,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 22:29:11,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280869169] [2020-10-21 22:29:11,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:29:11,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:11,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:29:11,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:29:11,393 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-21 22:29:11,676 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-21 22:29:11,912 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-21 22:29:12,209 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-21 22:29:12,580 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-10-21 22:29:12,994 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 98 [2020-10-21 22:29:13,335 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 103 [2020-10-21 22:29:13,527 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2020-10-21 22:29:13,788 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-10-21 22:29:14,177 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-21 22:29:14,452 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-21 22:29:14,609 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-21 22:29:14,971 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-21 22:29:15,279 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 68 [2020-10-21 22:29:15,551 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-21 22:29:15,965 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-10-21 22:29:16,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:16,083 INFO L93 Difference]: Finished difference Result 305 states and 837 transitions. [2020-10-21 22:29:16,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-21 22:29:16,084 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-21 22:29:16,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:16,086 INFO L225 Difference]: With dead ends: 305 [2020-10-21 22:29:16,087 INFO L226 Difference]: Without dead ends: 245 [2020-10-21 22:29:16,087 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=220, Invalid=482, Unknown=0, NotChecked=0, Total=702 [2020-10-21 22:29:16,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-21 22:29:16,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 110. [2020-10-21 22:29:16,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-21 22:29:16,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 288 transitions. [2020-10-21 22:29:16,100 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 288 transitions. Word has length 20 [2020-10-21 22:29:16,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:16,100 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 288 transitions. [2020-10-21 22:29:16,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:29:16,100 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 288 transitions. [2020-10-21 22:29:16,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 22:29:16,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:16,102 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] [2020-10-21 22:29:16,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-21 22:29:16,102 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:16,103 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-21 22:29:16,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:16,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756634865] [2020-10-21 22:29:16,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:16,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:16,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756634865] [2020-10-21 22:29:16,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:29:16,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 22:29:16,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906638757] [2020-10-21 22:29:16,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:29:16,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:16,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:29:16,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:29:16,779 INFO L87 Difference]: Start difference. First operand 110 states and 288 transitions. Second operand 10 states. [2020-10-21 22:29:17,031 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-21 22:29:17,247 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-21 22:29:17,547 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-21 22:29:17,927 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-21 22:29:18,381 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 109 [2020-10-21 22:29:18,948 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 115 [2020-10-21 22:29:19,272 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-21 22:29:19,494 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-21 22:29:19,774 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-21 22:29:20,093 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 97 [2020-10-21 22:29:20,544 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 108 [2020-10-21 22:29:21,070 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 91 [2020-10-21 22:29:21,433 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 102 [2020-10-21 22:29:21,795 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-21 22:29:21,944 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-21 22:29:22,184 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2020-10-21 22:29:22,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:22,269 INFO L93 Difference]: Finished difference Result 414 states and 1136 transitions. [2020-10-21 22:29:22,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-21 22:29:22,269 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-21 22:29:22,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:22,274 INFO L225 Difference]: With dead ends: 414 [2020-10-21 22:29:22,274 INFO L226 Difference]: Without dead ends: 382 [2020-10-21 22:29:22,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-10-21 22:29:22,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-21 22:29:22,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 116. [2020-10-21 22:29:22,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-21 22:29:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 301 transitions. [2020-10-21 22:29:22,287 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 301 transitions. Word has length 20 [2020-10-21 22:29:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:22,287 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 301 transitions. [2020-10-21 22:29:22,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:29:22,288 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 301 transitions. [2020-10-21 22:29:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 22:29:22,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:22,289 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] [2020-10-21 22:29:22,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-21 22:29:22,289 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:22,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:22,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-21 22:29:22,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:22,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810041115] [2020-10-21 22:29:22,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:22,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:22,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810041115] [2020-10-21 22:29:22,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:29:22,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 22:29:22,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908309402] [2020-10-21 22:29:22,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:29:22,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:22,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:29:22,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:29:22,933 INFO L87 Difference]: Start difference. First operand 116 states and 301 transitions. Second operand 10 states. [2020-10-21 22:29:23,207 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-21 22:29:23,448 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-21 22:29:23,730 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-21 22:29:24,139 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-21 22:29:24,670 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-21 22:29:25,296 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 123 [2020-10-21 22:29:25,635 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 96 [2020-10-21 22:29:25,894 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 72 [2020-10-21 22:29:26,191 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-10-21 22:29:26,639 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 99 [2020-10-21 22:29:27,184 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 106 [2020-10-21 22:29:27,642 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-21 22:29:27,946 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-10-21 22:29:28,136 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2020-10-21 22:29:28,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:28,210 INFO L93 Difference]: Finished difference Result 320 states and 886 transitions. [2020-10-21 22:29:28,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-21 22:29:28,210 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-21 22:29:28,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:28,213 INFO L225 Difference]: With dead ends: 320 [2020-10-21 22:29:28,213 INFO L226 Difference]: Without dead ends: 318 [2020-10-21 22:29:28,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=216, Invalid=486, Unknown=0, NotChecked=0, Total=702 [2020-10-21 22:29:28,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-21 22:29:28,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 118. [2020-10-21 22:29:28,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-21 22:29:28,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 308 transitions. [2020-10-21 22:29:28,229 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 308 transitions. Word has length 20 [2020-10-21 22:29:28,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:28,230 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 308 transitions. [2020-10-21 22:29:28,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:29:28,230 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 308 transitions. [2020-10-21 22:29:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 22:29:28,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:28,231 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] [2020-10-21 22:29:28,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-21 22:29:28,232 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:28,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-21 22:29:28,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:28,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223799439] [2020-10-21 22:29:28,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:28,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:28,836 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:28,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223799439] [2020-10-21 22:29:28,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-21 22:29:28,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-21 22:29:28,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432291548] [2020-10-21 22:29:28,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-21 22:29:28,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:28,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-21 22:29:28,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-21 22:29:28,838 INFO L87 Difference]: Start difference. First operand 118 states and 308 transitions. Second operand 10 states. [2020-10-21 22:29:29,108 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 60 [2020-10-21 22:29:29,363 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 74 [2020-10-21 22:29:29,677 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 83 [2020-10-21 22:29:30,009 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 86 [2020-10-21 22:29:30,383 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 101 [2020-10-21 22:29:30,698 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 83 [2020-10-21 22:29:31,109 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 97 [2020-10-21 22:29:31,561 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 115 [2020-10-21 22:29:32,000 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 103 [2020-10-21 22:29:32,539 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-21 22:29:32,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:32,671 INFO L93 Difference]: Finished difference Result 278 states and 749 transitions. [2020-10-21 22:29:32,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-21 22:29:32,672 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-21 22:29:32,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:32,674 INFO L225 Difference]: With dead ends: 278 [2020-10-21 22:29:32,675 INFO L226 Difference]: Without dead ends: 278 [2020-10-21 22:29:32,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-21 22:29:32,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-21 22:29:32,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 122. [2020-10-21 22:29:32,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-21 22:29:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 324 transitions. [2020-10-21 22:29:32,688 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 324 transitions. Word has length 20 [2020-10-21 22:29:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:32,688 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 324 transitions. [2020-10-21 22:29:32,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-21 22:29:32,688 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 324 transitions. [2020-10-21 22:29:32,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-21 22:29:32,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:32,689 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] [2020-10-21 22:29:32,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-21 22:29:32,690 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:32,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:32,690 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-21 22:29:32,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:32,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084708228] [2020-10-21 22:29:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:33,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:33,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084708228] [2020-10-21 22:29:33,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392108139] [2020-10-21 22:29:33,044 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 [2020-10-21 22:29:33,137 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:29:33,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:29:33,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 67 conjunts are in the unsatisfiable core [2020-10-21 22:29:33,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:29:33,249 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:29:33,250 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 [2020-10-21 22:29:33,257 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 5, 1] term [2020-10-21 22:29:33,258 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:33,262 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:33,263 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:33,276 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-21 22:29:33,414 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2020-10-21 22:29:33,417 INFO L625 ElimStorePlain]: treesize reduction 97, result has 37.0 percent of original size [2020-10-21 22:29:33,429 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 [2020-10-21 22:29:33,430 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-21 22:29:33,461 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:29:33,462 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:29:33,462 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:68, output treesize:53 [2020-10-21 22:29:33,581 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 [2020-10-21 22:29:33,582 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:29:33,617 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:29:33,621 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. [2020-10-21 22:29:33,621 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:64, output treesize:60 [2020-10-21 22:29:34,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:34,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:29:34,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 15 [2020-10-21 22:29:34,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053164699] [2020-10-21 22:29:34,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-21 22:29:34,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:34,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-21 22:29:34,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2020-10-21 22:29:34,253 INFO L87 Difference]: Start difference. First operand 122 states and 324 transitions. Second operand 17 states. [2020-10-21 22:29:34,544 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 50 [2020-10-21 22:29:34,790 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2020-10-21 22:29:35,171 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-21 22:29:35,539 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-21 22:29:35,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:35,943 INFO L93 Difference]: Finished difference Result 243 states and 654 transitions. [2020-10-21 22:29:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-21 22:29:35,943 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 20 [2020-10-21 22:29:35,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:35,946 INFO L225 Difference]: With dead ends: 243 [2020-10-21 22:29:35,946 INFO L226 Difference]: Without dead ends: 224 [2020-10-21 22:29:35,947 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=185, Invalid=571, Unknown=0, NotChecked=0, Total=756 [2020-10-21 22:29:35,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-21 22:29:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 176. [2020-10-21 22:29:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-21 22:29:35,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 481 transitions. [2020-10-21 22:29:35,955 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 481 transitions. Word has length 20 [2020-10-21 22:29:35,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:35,956 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 481 transitions. [2020-10-21 22:29:35,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-21 22:29:35,956 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 481 transitions. [2020-10-21 22:29:35,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 22:29:35,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:35,957 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] [2020-10-21 22:29:36,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:29:36,171 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:36,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-21 22:29:36,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:36,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197600976] [2020-10-21 22:29:36,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:36,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197600976] [2020-10-21 22:29:36,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467304628] [2020-10-21 22:29:36,562 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 [2020-10-21 22:29:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:36,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 31 conjunts are in the unsatisfiable core [2020-10-21 22:29:36,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:29:36,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:29:36,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:29:36,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 11 [2020-10-21 22:29:36,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368178581] [2020-10-21 22:29:36,711 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-21 22:29:36,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:36,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-21 22:29:36,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-10-21 22:29:36,712 INFO L87 Difference]: Start difference. First operand 176 states and 481 transitions. Second operand 13 states. [2020-10-21 22:29:38,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:38,030 INFO L93 Difference]: Finished difference Result 491 states and 1335 transitions. [2020-10-21 22:29:38,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-21 22:29:38,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-10-21 22:29:38,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:38,032 INFO L225 Difference]: With dead ends: 491 [2020-10-21 22:29:38,032 INFO L226 Difference]: Without dead ends: 109 [2020-10-21 22:29:38,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=203, Invalid=499, Unknown=0, NotChecked=0, Total=702 [2020-10-21 22:29:38,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-21 22:29:38,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 70. [2020-10-21 22:29:38,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-21 22:29:38,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 149 transitions. [2020-10-21 22:29:38,037 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 149 transitions. Word has length 22 [2020-10-21 22:29:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:38,038 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 149 transitions. [2020-10-21 22:29:38,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-21 22:29:38,038 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 149 transitions. [2020-10-21 22:29:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-21 22:29:38,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:38,038 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] [2020-10-21 22:29:38,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:29:38,240 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:38,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:38,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1587846356, now seen corresponding path program 2 times [2020-10-21 22:29:38,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:38,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728674313] [2020-10-21 22:29:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:38,560 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:38,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728674313] [2020-10-21 22:29:38,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286903693] [2020-10-21 22:29:38,561 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 [2020-10-21 22:29:38,630 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-21 22:29:38,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:29:38,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-21 22:29:38,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:29:38,644 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 [2020-10-21 22:29:38,646 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:29:38,682 INFO L625 ElimStorePlain]: treesize reduction 31, result has 36.7 percent of original size [2020-10-21 22:29:38,683 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:29:38,683 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-21 22:29:38,757 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 [2020-10-21 22:29:38,758 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:29:38,767 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:29:38,771 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. [2020-10-21 22:29:38,772 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-21 22:29:38,900 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-21 22:29:38,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:29:38,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-21 22:29:38,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449806274] [2020-10-21 22:29:38,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-21 22:29:38,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-21 22:29:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-21 22:29:38,904 INFO L87 Difference]: Start difference. First operand 70 states and 149 transitions. Second operand 14 states. [2020-10-21 22:29:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:40,369 INFO L93 Difference]: Finished difference Result 187 states and 417 transitions. [2020-10-21 22:29:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-21 22:29:40,370 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-21 22:29:40,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:40,370 INFO L225 Difference]: With dead ends: 187 [2020-10-21 22:29:40,371 INFO L226 Difference]: Without dead ends: 56 [2020-10-21 22:29:40,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=157, Invalid=599, Unknown=0, NotChecked=0, Total=756 [2020-10-21 22:29:40,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-21 22:29:40,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 52. [2020-10-21 22:29:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-21 22:29:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 98 transitions. [2020-10-21 22:29:40,374 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 98 transitions. Word has length 22 [2020-10-21 22:29:40,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:40,374 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 98 transitions. [2020-10-21 22:29:40,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-21 22:29:40,374 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 98 transitions. [2020-10-21 22:29:40,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-21 22:29:40,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-21 22:29:40,375 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] [2020-10-21 22:29:40,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-21 22:29:40,579 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-21 22:29:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-21 22:29:40,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1188207356, now seen corresponding path program 3 times [2020-10-21 22:29:40,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-21 22:29:40,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721595525] [2020-10-21 22:29:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-21 22:29:40,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-21 22:29:40,937 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-21 22:29:40,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721595525] [2020-10-21 22:29:40,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355794063] [2020-10-21 22:29:40,940 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 [2020-10-21 22:29:41,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-10-21 22:29:41,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-21 22:29:41,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 34 conjunts are in the unsatisfiable core [2020-10-21 22:29:41,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-21 22:29:41,083 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:29:41,084 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 [2020-10-21 22:29:41,086 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:41,096 INFO L603 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-10-21 22:29:41,097 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:41,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-21 22:29:41,105 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:29:41,170 INFO L625 ElimStorePlain]: treesize reduction 139, result has 13.7 percent of original size [2020-10-21 22:29:41,172 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-21 22:29:41,172 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:14 [2020-10-21 22:29:41,281 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 [2020-10-21 22:29:41,282 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-21 22:29:41,290 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-21 22:29:41,291 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. [2020-10-21 22:29:41,292 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-21 22:29:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-21 22:29:41,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-21 22:29:41,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4] total 13 [2020-10-21 22:29:41,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385439536] [2020-10-21 22:29:41,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-21 22:29:41,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-21 22:29:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-21 22:29:41,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2020-10-21 22:29:41,360 INFO L87 Difference]: Start difference. First operand 52 states and 98 transitions. Second operand 15 states. [2020-10-21 22:29:43,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-21 22:29:43,163 INFO L93 Difference]: Finished difference Result 104 states and 197 transitions. [2020-10-21 22:29:43,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-21 22:29:43,164 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 24 [2020-10-21 22:29:43,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-21 22:29:43,165 INFO L225 Difference]: With dead ends: 104 [2020-10-21 22:29:43,165 INFO L226 Difference]: Without dead ends: 0 [2020-10-21 22:29:43,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=244, Invalid=878, Unknown=0, NotChecked=0, Total=1122 [2020-10-21 22:29:43,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-21 22:29:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-21 22:29:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-21 22:29:43,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-21 22:29:43,167 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-10-21 22:29:43,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-21 22:29:43,167 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-21 22:29:43,167 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-21 22:29:43,167 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-21 22:29:43,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-21 22:29:43,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-21 22:29:43,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 10:29:43 BasicIcfg [2020-10-21 22:29:43,374 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-21 22:29:43,375 INFO L168 Benchmark]: Toolchain (without parser) took 40489.84 ms. Allocated memory was 139.5 MB in the beginning and 433.1 MB in the end (delta: 293.6 MB). Free memory was 99.9 MB in the beginning and 366.6 MB in the end (delta: -266.7 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,376 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.50 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 98.8 MB in the beginning and 177.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,377 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.26 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 176.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,378 INFO L168 Benchmark]: Boogie Preprocessor took 69.45 ms. Allocated memory is still 202.4 MB. Free memory was 176.1 MB in the beginning and 173.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,378 INFO L168 Benchmark]: RCFGBuilder took 525.43 ms. Allocated memory is still 202.4 MB. Free memory was 173.7 MB in the beginning and 147.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,379 INFO L168 Benchmark]: TraceAbstraction took 39370.33 ms. Allocated memory was 202.4 MB in the beginning and 433.1 MB in the end (delta: 230.7 MB). Free memory was 147.2 MB in the beginning and 366.6 MB in the end (delta: -219.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-10-21 22:29:43,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.50 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 98.8 MB in the beginning and 177.4 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 76.26 ms. Allocated memory is still 202.4 MB. Free memory was 177.4 MB in the beginning and 176.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.45 ms. Allocated memory is still 202.4 MB. Free memory was 176.1 MB in the beginning and 173.7 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 525.43 ms. Allocated memory is still 202.4 MB. Free memory was 173.7 MB in the beginning and 147.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39370.33 ms. Allocated memory was 202.4 MB in the beginning and 433.1 MB in the end (delta: 230.7 MB). Free memory was 147.2 MB in the beginning and 366.6 MB in the end (delta: -219.4 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 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: 0.2s, 122 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.7s, 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: 39.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 26.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.7s, HoareTripleCheckerStatistics: 303 SDtfs, 1726 SDslu, 817 SDs, 0 SdLazy, 2476 SolverSat, 321 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 309 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 222 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 765 ImplicationChecksByTransitivity, 24.5s 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, 0.7s SatisfiabilityAnalysisTime, 5.8s 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...