/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/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf -i ../../../trunk/examples/concurrent/pthreads/distributed_search2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-05 23:51:39,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-05 23:51:39,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-05 23:51:39,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-05 23:51:39,374 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-05 23:51:39,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-05 23:51:39,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-05 23:51:39,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-05 23:51:39,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-05 23:51:39,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-05 23:51:39,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-05 23:51:39,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-05 23:51:39,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-05 23:51:39,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-05 23:51:39,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-05 23:51:39,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-05 23:51:39,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-05 23:51:39,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-05 23:51:39,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-05 23:51:39,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-05 23:51:39,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-05 23:51:39,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-05 23:51:39,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-05 23:51:39,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-05 23:51:39,409 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-05 23:51:39,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-05 23:51:39,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-05 23:51:39,413 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-05 23:51:39,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-05 23:51:39,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-05 23:51:39,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-05 23:51:39,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-05 23:51:39,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-05 23:51:39,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-05 23:51:39,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-05 23:51:39,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-05 23:51:39,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA.epf [2020-10-05 23:51:39,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-05 23:51:39,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-05 23:51:39,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-05 23:51:39,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-05 23:51:39,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-05 23:51:39,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-05 23:51:39,444 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-05 23:51:39,444 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-05 23:51:39,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-05 23:51:39,445 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-05 23:51:39,445 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-05 23:51:39,445 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-05 23:51:39,445 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-05 23:51:39,446 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-05 23:51:39,446 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-05 23:51:39,447 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-05 23:51:39,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-05 23:51:39,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-05 23:51:39,447 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-05 23:51:39,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-05 23:51:39,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-05 23:51:39,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-05 23:51:39,448 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-05 23:51:39,448 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-05 23:51:39,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-05 23:51:39,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-05 23:51:39,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-05 23:51:39,450 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-05 23:51:39,450 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-05 23:51:39,763 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-05 23:51:39,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-05 23:51:39,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-05 23:51:39,780 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-05 23:51:39,781 INFO L275 PluginConnector]: CDTParser initialized [2020-10-05 23:51:39,781 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-05 23:51:39,855 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44990ca36/81b169bb118f4ca28d8473fd4f338d78/FLAG910c3db0d [2020-10-05 23:51:40,325 INFO L306 CDTParser]: Found 1 translation units. [2020-10-05 23:51:40,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/concurrent/pthreads/distributed_search2.c [2020-10-05 23:51:40,326 WARN L117 ultiparseSymbolTable]: System include pthread.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:51:40,326 WARN L117 ultiparseSymbolTable]: System include stdio.h could not be resolved by CDT -- only built-in system includes are available. [2020-10-05 23:51:40,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44990ca36/81b169bb118f4ca28d8473fd4f338d78/FLAG910c3db0d [2020-10-05 23:51:40,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44990ca36/81b169bb118f4ca28d8473fd4f338d78 [2020-10-05 23:51:40,695 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-05 23:51:40,697 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-05 23:51:40,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-05 23:51:40,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-05 23:51:40,701 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-05 23:51:40,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:51:40" (1/1) ... [2020-10-05 23:51:40,706 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59268cdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:40, skipping insertion in model container [2020-10-05 23:51:40,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.10 11:51:40" (1/1) ... [2020-10-05 23:51:40,714 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-05 23:51:40,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-05 23:51:40,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:51:40,996 INFO L203 MainTranslator]: Completed pre-run [2020-10-05 23:51:41,018 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-05 23:51:41,032 INFO L208 MainTranslator]: Completed translation [2020-10-05 23:51:41,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41 WrapperNode [2020-10-05 23:51:41,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-05 23:51:41,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-05 23:51:41,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-05 23:51:41,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-05 23:51:41,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,073 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-05 23:51:41,074 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-05 23:51:41,074 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-05 23:51:41,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-05 23:51:41,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (1/1) ... [2020-10-05 23:51:41,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-05 23:51:41,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-05 23:51:41,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-05 23:51:41,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-05 23:51:41,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (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 [2020-10-05 23:51:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-05 23:51:41,163 INFO L130 BoogieDeclarations]: Found specification of procedure search_worker [2020-10-05 23:51:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure search_worker [2020-10-05 23:51:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-05 23:51:41,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-05 23:51:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-05 23:51:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-05 23:51:41,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-05 23:51:41,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-05 23:51:41,166 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-05 23:51:41,545 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-05 23:51:41,545 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-05 23:51:41,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:51:41 BoogieIcfgContainer [2020-10-05 23:51:41,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-05 23:51:41,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-05 23:51:41,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-05 23:51:41,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-05 23:51:41,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.10 11:51:40" (1/3) ... [2020-10-05 23:51:41,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5028f54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:51:41, skipping insertion in model container [2020-10-05 23:51:41,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.10 11:51:41" (2/3) ... [2020-10-05 23:51:41,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5028f54c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.10 11:51:41, skipping insertion in model container [2020-10-05 23:51:41,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.10 11:51:41" (3/3) ... [2020-10-05 23:51:41,557 INFO L109 eAbstractionObserver]: Analyzing ICFG distributed_search2.c [2020-10-05 23:51:41,573 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-05 23:51:41,573 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-05 23:51:41,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-05 23:51:41,582 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-05 23:51:41,624 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,624 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,625 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,625 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,625 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,626 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,626 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,626 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,627 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,627 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,627 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,627 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,628 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,628 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,628 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,629 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,629 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,629 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,629 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,630 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,630 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,630 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,631 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,631 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,631 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,632 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,632 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,632 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,633 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,633 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,633 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,634 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,634 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,634 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,635 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,635 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,635 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,636 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,636 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,636 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,637 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,637 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#in~params.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,637 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,637 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,638 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,638 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,639 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,639 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,640 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,640 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,640 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,640 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,641 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,641 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,641 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,642 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,642 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,642 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,642 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,643 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,643 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,643 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,644 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,644 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,644 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,645 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,645 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,645 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,645 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,646 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,646 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,646 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,647 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,647 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,647 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,648 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,648 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,648 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,649 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,649 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,653 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,653 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,654 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,654 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,654 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,654 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,655 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,655 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,655 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,655 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,656 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,656 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork0_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,656 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork0_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,676 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~post2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,676 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,676 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,677 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem0| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,679 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#t~mem3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,679 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,680 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,680 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,681 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~params.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,681 WARN L313 ript$VariableManager]: TermVariabe |search_workerThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,681 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~bounds~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,682 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~lower~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,682 WARN L313 ript$VariableManager]: TermVariabe search_workerThread1of1ForFork1_~upper~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-05 23:51:41,724 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-05 23:51:41,742 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-05 23:51:41,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-05 23:51:41,743 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-05 23:51:41,743 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-05 23:51:41,743 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-05 23:51:41,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-05 23:51:41,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-05 23:51:41,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-05 23:51:41,768 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 298 flow [2020-10-05 23:51:41,770 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-05 23:51:41,860 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-05 23:51:41,861 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:51:41,868 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. [2020-10-05 23:51:41,872 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 298 flow [2020-10-05 23:51:41,934 INFO L129 PetriNetUnfolder]: 9/138 cut-off events. [2020-10-05 23:51:41,934 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2020-10-05 23:51:41,938 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. [2020-10-05 23:51:41,942 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1920 [2020-10-05 23:51:41,943 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-05 23:51:44,132 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-05 23:51:44,284 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-05 23:51:44,656 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-05 23:51:44,995 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-05 23:51:45,002 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 11, 1] term [2020-10-05 23:51:45,002 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:51:45,589 WARN L193 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 119 [2020-10-05 23:51:45,775 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-05 23:51:46,012 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-05 23:51:46,254 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-05 23:51:46,262 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2754 [2020-10-05 23:51:46,263 INFO L214 etLargeBlockEncoding]: Total number of compositions: 121 [2020-10-05 23:51:46,267 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 30 transitions, 82 flow [2020-10-05 23:51:46,281 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 126 states. [2020-10-05 23:51:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states. [2020-10-05 23:51:46,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:51:46,294 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:46,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:46,298 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:46,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:46,306 INFO L82 PathProgramCache]: Analyzing trace with hash -878946956, now seen corresponding path program 1 times [2020-10-05 23:51:46,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:46,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280319975] [2020-10-05 23:51:46,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:46,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:46,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280319975] [2020-10-05 23:51:46,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:46,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-05 23:51:46,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148277293] [2020-10-05 23:51:46,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-05 23:51:46,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:46,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-05 23:51:46,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-05 23:51:46,595 INFO L87 Difference]: Start difference. First operand 126 states. Second operand 5 states. [2020-10-05 23:51:46,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:46,712 INFO L93 Difference]: Finished difference Result 126 states and 313 transitions. [2020-10-05 23:51:46,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-05 23:51:46,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-05 23:51:46,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:46,727 INFO L225 Difference]: With dead ends: 126 [2020-10-05 23:51:46,728 INFO L226 Difference]: Without dead ends: 104 [2020-10-05 23:51:46,729 INFO L675 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 [2020-10-05 23:51:46,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-05 23:51:46,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-05 23:51:46,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-05 23:51:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 267 transitions. [2020-10-05 23:51:46,772 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 267 transitions. Word has length 16 [2020-10-05 23:51:46,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:46,773 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 267 transitions. [2020-10-05 23:51:46,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-05 23:51:46,773 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 267 transitions. [2020-10-05 23:51:46,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-05 23:51:46,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:46,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:46,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-05 23:51:46,776 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:46,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:46,776 INFO L82 PathProgramCache]: Analyzing trace with hash 351436872, now seen corresponding path program 1 times [2020-10-05 23:51:46,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:46,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128484500] [2020-10-05 23:51:46,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:46,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:46,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128484500] [2020-10-05 23:51:46,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:46,880 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-05 23:51:46,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927229506] [2020-10-05 23:51:46,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-05 23:51:46,882 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:46,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-05 23:51:46,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-05 23:51:46,883 INFO L87 Difference]: Start difference. First operand 104 states and 267 transitions. Second operand 3 states. [2020-10-05 23:51:46,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:46,914 INFO L93 Difference]: Finished difference Result 170 states and 444 transitions. [2020-10-05 23:51:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-05 23:51:46,914 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-05 23:51:46,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:46,917 INFO L225 Difference]: With dead ends: 170 [2020-10-05 23:51:46,918 INFO L226 Difference]: Without dead ends: 163 [2020-10-05 23:51:46,918 INFO L675 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 [2020-10-05 23:51:46,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-05 23:51:46,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 140. [2020-10-05 23:51:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-05 23:51:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 372 transitions. [2020-10-05 23:51:46,938 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 372 transitions. Word has length 16 [2020-10-05 23:51:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:46,938 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 372 transitions. [2020-10-05 23:51:46,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-05 23:51:46,938 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 372 transitions. [2020-10-05 23:51:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-05 23:51:46,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:46,941 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-05 23:51:46,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-05 23:51:46,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:46,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:46,942 INFO L82 PathProgramCache]: Analyzing trace with hash 443469900, now seen corresponding path program 1 times [2020-10-05 23:51:46,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:46,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451015056] [2020-10-05 23:51:46,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:47,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:47,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451015056] [2020-10-05 23:51:47,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175635281] [2020-10-05 23:51:47,255 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 [2020-10-05 23:51:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:47,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-05 23:51:47,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:47,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:47,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:51:47,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6 [2020-10-05 23:51:47,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333905578] [2020-10-05 23:51:47,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-05 23:51:47,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:47,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-05 23:51:47,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-05 23:51:47,410 INFO L87 Difference]: Start difference. First operand 140 states and 372 transitions. Second operand 8 states. [2020-10-05 23:51:47,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:47,589 INFO L93 Difference]: Finished difference Result 202 states and 539 transitions. [2020-10-05 23:51:47,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-05 23:51:47,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-05 23:51:47,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:47,592 INFO L225 Difference]: With dead ends: 202 [2020-10-05 23:51:47,592 INFO L226 Difference]: Without dead ends: 158 [2020-10-05 23:51:47,593 INFO L675 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 [2020-10-05 23:51:47,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-05 23:51:47,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 110. [2020-10-05 23:51:47,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 23:51:47,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-05 23:51:47,606 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 19 [2020-10-05 23:51:47,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:47,607 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-05 23:51:47,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-05 23:51:47,607 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-05 23:51:47,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:51:47,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:47,609 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] [2020-10-05 23:51:47,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-10-05 23:51:47,823 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:47,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:47,824 INFO L82 PathProgramCache]: Analyzing trace with hash -799546606, now seen corresponding path program 1 times [2020-10-05 23:51:47,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:47,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686120225] [2020-10-05 23:51:47,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:48,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686120225] [2020-10-05 23:51:48,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:48,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-05 23:51:48,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472488077] [2020-10-05 23:51:48,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:51:48,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:48,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:51:48,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:51:48,282 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-05 23:51:49,081 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-05 23:51:49,425 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-05 23:51:49,699 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-05 23:51:50,040 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-10-05 23:51:50,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:50,485 INFO L93 Difference]: Finished difference Result 268 states and 728 transitions. [2020-10-05 23:51:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:51:50,486 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-05 23:51:50,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:50,488 INFO L225 Difference]: With dead ends: 268 [2020-10-05 23:51:50,489 INFO L226 Difference]: Without dead ends: 226 [2020-10-05 23:51:50,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=201, Invalid=449, Unknown=0, NotChecked=0, Total=650 [2020-10-05 23:51:50,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-05 23:51:50,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 110. [2020-10-05 23:51:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-05 23:51:50,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 290 transitions. [2020-10-05 23:51:50,515 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 290 transitions. Word has length 20 [2020-10-05 23:51:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:50,515 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 290 transitions. [2020-10-05 23:51:50,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:51:50,516 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 290 transitions. [2020-10-05 23:51:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:51:50,517 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:50,517 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] [2020-10-05 23:51:50,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-05 23:51:50,518 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:50,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:50,519 INFO L82 PathProgramCache]: Analyzing trace with hash -323380434, now seen corresponding path program 2 times [2020-10-05 23:51:50,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:50,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320291659] [2020-10-05 23:51:50,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:50,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:51,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:51,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320291659] [2020-10-05 23:51:51,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:51,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-05 23:51:51,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981187255] [2020-10-05 23:51:51,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:51:51,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:51,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:51:51,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:51:51,008 INFO L87 Difference]: Start difference. First operand 110 states and 290 transitions. Second operand 10 states. [2020-10-05 23:51:51,910 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-05 23:51:52,240 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-05 23:51:52,557 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-05 23:51:52,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:52,921 INFO L93 Difference]: Finished difference Result 356 states and 959 transitions. [2020-10-05 23:51:52,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-05 23:51:52,921 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-05 23:51:52,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:52,924 INFO L225 Difference]: With dead ends: 356 [2020-10-05 23:51:52,924 INFO L226 Difference]: Without dead ends: 324 [2020-10-05 23:51:52,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2020-10-05 23:51:52,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-05 23:51:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 116. [2020-10-05 23:51:52,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-05 23:51:52,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 303 transitions. [2020-10-05 23:51:52,935 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 303 transitions. Word has length 20 [2020-10-05 23:51:52,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:52,935 INFO L479 AbstractCegarLoop]: Abstraction has 116 states and 303 transitions. [2020-10-05 23:51:52,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:51:52,936 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 303 transitions. [2020-10-05 23:51:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:51:52,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:52,937 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] [2020-10-05 23:51:52,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-05 23:51:52,938 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:52,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1380507504, now seen corresponding path program 3 times [2020-10-05 23:51:52,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:52,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548604600] [2020-10-05 23:51:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:52,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:53,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548604600] [2020-10-05 23:51:53,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:53,313 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-05 23:51:53,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444605771] [2020-10-05 23:51:53,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:51:53,314 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:53,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:51:53,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:51:53,315 INFO L87 Difference]: Start difference. First operand 116 states and 303 transitions. Second operand 10 states. [2020-10-05 23:51:54,069 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-05 23:51:54,257 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-05 23:51:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:54,830 INFO L93 Difference]: Finished difference Result 310 states and 851 transitions. [2020-10-05 23:51:54,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-05 23:51:54,832 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-05 23:51:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:54,835 INFO L225 Difference]: With dead ends: 310 [2020-10-05 23:51:54,835 INFO L226 Difference]: Without dead ends: 294 [2020-10-05 23:51:54,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2020-10-05 23:51:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-10-05 23:51:54,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 120. [2020-10-05 23:51:54,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-05 23:51:54,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 313 transitions. [2020-10-05 23:51:54,843 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 313 transitions. Word has length 20 [2020-10-05 23:51:54,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:54,843 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 313 transitions. [2020-10-05 23:51:54,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:51:54,844 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 313 transitions. [2020-10-05 23:51:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:51:54,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:54,845 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] [2020-10-05 23:51:54,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-05 23:51:54,846 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:54,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:54,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1947007856, now seen corresponding path program 4 times [2020-10-05 23:51:54,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:54,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647329419] [2020-10-05 23:51:54,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:54,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:55,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:55,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647329419] [2020-10-05 23:51:55,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-05 23:51:55,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-05 23:51:55,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042449804] [2020-10-05 23:51:55,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-05 23:51:55,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:51:55,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-05 23:51:55,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-05 23:51:55,302 INFO L87 Difference]: Start difference. First operand 120 states and 313 transitions. Second operand 10 states. [2020-10-05 23:51:55,887 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-05 23:51:56,376 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-10-05 23:51:56,516 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-05 23:51:56,803 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 90 [2020-10-05 23:51:57,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:51:57,169 INFO L93 Difference]: Finished difference Result 278 states and 761 transitions. [2020-10-05 23:51:57,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-05 23:51:57,170 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20 [2020-10-05 23:51:57,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:51:57,173 INFO L225 Difference]: With dead ends: 278 [2020-10-05 23:51:57,173 INFO L226 Difference]: Without dead ends: 278 [2020-10-05 23:51:57,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-10-05 23:51:57,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-10-05 23:51:57,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 126. [2020-10-05 23:51:57,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-05 23:51:57,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 336 transitions. [2020-10-05 23:51:57,185 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 336 transitions. Word has length 20 [2020-10-05 23:51:57,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:51:57,185 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 336 transitions. [2020-10-05 23:51:57,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-05 23:51:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 336 transitions. [2020-10-05 23:51:57,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:51:57,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:51:57,187 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] [2020-10-05 23:51:57,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-05 23:51:57,187 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:51:57,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:51:57,187 INFO L82 PathProgramCache]: Analyzing trace with hash -598861718, now seen corresponding path program 5 times [2020-10-05 23:51:57,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:51:57,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586282280] [2020-10-05 23:51:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:51:57,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:51:57,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:51:57,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586282280] [2020-10-05 23:51:57,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617179560] [2020-10-05 23:51:57,481 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 [2020-10-05 23:51:57,553 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:51:57,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:51:57,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 59 conjunts are in the unsatisfiable core [2020-10-05 23:51:57,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:51:57,622 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 39 treesize of output 37 [2020-10-05 23:51:57,629 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-05 23:51:57,675 INFO L625 ElimStorePlain]: treesize reduction 22, result has 67.6 percent of original size [2020-10-05 23:51:57,689 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-10-05 23:51:57,690 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-05 23:51:57,707 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:51:57,710 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-05 23:51:57,710 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-10-05 23:51:57,850 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:51:57,851 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 52 [2020-10-05 23:51:57,852 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-05 23:51:57,916 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.1 percent of original size [2020-10-05 23:51:57,926 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:51:57,933 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-05 23:51:57,933 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:53, output treesize:57 [2020-10-05 23:51:57,938 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:51:59,193 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-10-05 23:51:59,211 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:51:59,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:51:59,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:51:59,403 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:51:59,407 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-05 23:51:59,409 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:52:01,514 WARN L193 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-10-05 23:52:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:01,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:52:01,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2020-10-05 23:52:01,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592415902] [2020-10-05 23:52:01,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-05 23:52:01,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:01,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-05 23:52:01,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=201, Unknown=1, NotChecked=0, Total=240 [2020-10-05 23:52:01,746 INFO L87 Difference]: Start difference. First operand 126 states and 336 transitions. Second operand 16 states. [2020-10-05 23:52:02,786 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-05 23:52:03,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:03,360 INFO L93 Difference]: Finished difference Result 267 states and 721 transitions. [2020-10-05 23:52:03,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-05 23:52:03,360 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 20 [2020-10-05 23:52:03,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:03,363 INFO L225 Difference]: With dead ends: 267 [2020-10-05 23:52:03,363 INFO L226 Difference]: Without dead ends: 249 [2020-10-05 23:52:03,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=153, Invalid=548, Unknown=1, NotChecked=0, Total=702 [2020-10-05 23:52:03,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-10-05 23:52:03,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 176. [2020-10-05 23:52:03,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-05 23:52:03,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 484 transitions. [2020-10-05 23:52:03,371 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 484 transitions. Word has length 20 [2020-10-05 23:52:03,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:03,372 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 484 transitions. [2020-10-05 23:52:03,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-05 23:52:03,372 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 484 transitions. [2020-10-05 23:52:03,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-05 23:52:03,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:03,373 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] [2020-10-05 23:52:03,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:52:03,581 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:03,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2064989212, now seen corresponding path program 6 times [2020-10-05 23:52:03,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:03,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017059244] [2020-10-05 23:52:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:03,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:03,820 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:03,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017059244] [2020-10-05 23:52:03,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889410650] [2020-10-05 23:52:03,821 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2020-10-05 23:52:03,888 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-05 23:52:03,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:52:03,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 33 conjunts are in the unsatisfiable core [2020-10-05 23:52:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:52:03,900 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 66 treesize of output 64 [2020-10-05 23:52:03,902 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-05 23:52:03,930 INFO L625 ElimStorePlain]: treesize reduction 42, result has 30.0 percent of original size [2020-10-05 23:52:03,936 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-05 23:52:03,937 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:24, output treesize:14 [2020-10-05 23:52:03,993 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 [2020-10-05 23:52:03,993 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-05 23:52:04,004 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:52:04,006 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. [2020-10-05 23:52:04,006 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:27, output treesize:23 [2020-10-05 23:52:04,153 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:04,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:52:04,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 11 [2020-10-05 23:52:04,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544763609] [2020-10-05 23:52:04,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-05 23:52:04,155 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:04,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-05 23:52:04,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-05 23:52:04,155 INFO L87 Difference]: Start difference. First operand 176 states and 484 transitions. Second operand 13 states. [2020-10-05 23:52:05,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:05,619 INFO L93 Difference]: Finished difference Result 526 states and 1436 transitions. [2020-10-05 23:52:05,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-05 23:52:05,620 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-10-05 23:52:05,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:05,623 INFO L225 Difference]: With dead ends: 526 [2020-10-05 23:52:05,624 INFO L226 Difference]: Without dead ends: 465 [2020-10-05 23:52:05,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=784, Unknown=0, NotChecked=0, Total=992 [2020-10-05 23:52:05,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-05 23:52:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 216. [2020-10-05 23:52:05,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-05 23:52:05,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 598 transitions. [2020-10-05 23:52:05,634 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 598 transitions. Word has length 20 [2020-10-05 23:52:05,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:05,635 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 598 transitions. [2020-10-05 23:52:05,635 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-05 23:52:05,635 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 598 transitions. [2020-10-05 23:52:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-05 23:52:05,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:05,636 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] [2020-10-05 23:52:05,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:52:05,843 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:05,844 INFO L82 PathProgramCache]: Analyzing trace with hash 2072690650, now seen corresponding path program 1 times [2020-10-05 23:52:05,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:05,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302157349] [2020-10-05 23:52:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:06,072 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:06,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302157349] [2020-10-05 23:52:06,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2043259103] [2020-10-05 23:52:06,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-10-05 23:52:06,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:06,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 70 conjunts are in the unsatisfiable core [2020-10-05 23:52:06,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:52:06,221 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 146 treesize of output 138 [2020-10-05 23:52:06,223 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-05 23:52:06,302 INFO L625 ElimStorePlain]: treesize reduction 104, result has 30.7 percent of original size [2020-10-05 23:52:06,310 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 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 [2020-10-05 23:52:06,312 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-05 23:52:06,335 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:52:06,337 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-05 23:52:06,337 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:51, output treesize:42 [2020-10-05 23:52:06,468 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:52:06,468 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 52 [2020-10-05 23:52:06,469 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-05 23:52:06,539 INFO L625 ElimStorePlain]: treesize reduction 16, result has 78.9 percent of original size [2020-10-05 23:52:06,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:52:06,545 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-05 23:52:06,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:56, output treesize:60 [2020-10-05 23:52:06,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:52:06,594 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-05 23:52:07,310 WARN L193 SmtUtils]: Spent 677.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-10-05 23:52:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:07,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:52:07,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 18 [2020-10-05 23:52:07,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156957957] [2020-10-05 23:52:07,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-05 23:52:07,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-05 23:52:07,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-05 23:52:07,768 INFO L87 Difference]: Start difference. First operand 216 states and 598 transitions. Second operand 20 states. [2020-10-05 23:52:09,592 WARN L193 SmtUtils]: Spent 1.47 s on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-10-05 23:52:10,187 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2020-10-05 23:52:10,442 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-05 23:52:10,960 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 70 [2020-10-05 23:52:11,148 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 68 [2020-10-05 23:52:11,331 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 72 [2020-10-05 23:52:11,842 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-05 23:52:12,012 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-05 23:52:12,152 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-10-05 23:52:12,417 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-05 23:52:12,596 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-05 23:52:12,767 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-05 23:52:13,135 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2020-10-05 23:52:13,442 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-05 23:52:13,685 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-05 23:52:14,026 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-05 23:52:14,373 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-05 23:52:14,776 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-05 23:52:14,948 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 73 [2020-10-05 23:52:15,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:15,178 INFO L93 Difference]: Finished difference Result 594 states and 1663 transitions. [2020-10-05 23:52:15,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-05 23:52:15,179 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 22 [2020-10-05 23:52:15,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:15,180 INFO L225 Difference]: With dead ends: 594 [2020-10-05 23:52:15,180 INFO L226 Difference]: Without dead ends: 52 [2020-10-05 23:52:15,181 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=623, Invalid=2239, Unknown=0, NotChecked=0, Total=2862 [2020-10-05 23:52:15,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-05 23:52:15,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-10-05 23:52:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-05 23:52:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 93 transitions. [2020-10-05 23:52:15,183 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 93 transitions. Word has length 22 [2020-10-05 23:52:15,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:15,184 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 93 transitions. [2020-10-05 23:52:15,184 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-05 23:52:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 93 transitions. [2020-10-05 23:52:15,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-05 23:52:15,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-05 23:52:15,185 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] [2020-10-05 23:52:15,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-05 23:52:15,388 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2020-10-05 23:52:15,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-05 23:52:15,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1720059924, now seen corresponding path program 2 times [2020-10-05 23:52:15,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-05 23:52:15,389 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022619139] [2020-10-05 23:52:15,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-05 23:52:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-05 23:52:15,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-05 23:52:15,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022619139] [2020-10-05 23:52:15,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153243154] [2020-10-05 23:52:15,632 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 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 [2020-10-05 23:52:15,706 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-05 23:52:15,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-05 23:52:15,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 35 conjunts are in the unsatisfiable core [2020-10-05 23:52:15,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-05 23:52:15,725 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 31 treesize of output 29 [2020-10-05 23:52:15,726 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-10-05 23:52:15,763 INFO L625 ElimStorePlain]: treesize reduction 18, result has 61.7 percent of original size [2020-10-05 23:52:15,769 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-10-05 23:52:15,769 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-05 23:52:15,791 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:52:15,793 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-10-05 23:52:15,793 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:35, output treesize:25 [2020-10-05 23:52:15,921 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-05 23:52:15,921 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 48 [2020-10-05 23:52:15,922 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-05 23:52:15,943 INFO L625 ElimStorePlain]: treesize reduction 28, result has 54.8 percent of original size [2020-10-05 23:52:15,946 INFO L545 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-10-05 23:52:15,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:38, output treesize:34 [2020-10-05 23:52:16,031 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-05 23:52:16,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-05 23:52:16,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4] total 12 [2020-10-05 23:52:16,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172873428] [2020-10-05 23:52:16,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-05 23:52:16,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-05 23:52:16,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-05 23:52:16,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-05 23:52:16,033 INFO L87 Difference]: Start difference. First operand 48 states and 93 transitions. Second operand 14 states. [2020-10-05 23:52:16,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-05 23:52:16,844 INFO L93 Difference]: Finished difference Result 51 states and 97 transitions. [2020-10-05 23:52:16,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-05 23:52:16,845 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 22 [2020-10-05 23:52:16,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-05 23:52:16,845 INFO L225 Difference]: With dead ends: 51 [2020-10-05 23:52:16,845 INFO L226 Difference]: Without dead ends: 0 [2020-10-05 23:52:16,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2020-10-05 23:52:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-05 23:52:16,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-05 23:52:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-05 23:52:16,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-05 23:52:16,847 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2020-10-05 23:52:16,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-05 23:52:16,848 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-05 23:52:16,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-05 23:52:16,848 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-05 23:52:16,848 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-05 23:52:17,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-10-05 23:52:17,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.10 11:52:17 BasicIcfg [2020-10-05 23:52:17,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-05 23:52:17,055 INFO L168 Benchmark]: Toolchain (without parser) took 36359.23 ms. Allocated memory was 140.0 MB in the beginning and 410.5 MB in the end (delta: 270.5 MB). Free memory was 101.2 MB in the beginning and 312.4 MB in the end (delta: -211.2 MB). Peak memory consumption was 59.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,056 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.22 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 179.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.35 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 177.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,057 INFO L168 Benchmark]: Boogie Preprocessor took 28.84 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 175.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,058 INFO L168 Benchmark]: RCFGBuilder took 444.29 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 149.5 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,058 INFO L168 Benchmark]: TraceAbstraction took 35505.38 ms. Allocated memory was 203.4 MB in the beginning and 410.5 MB in the end (delta: 207.1 MB). Free memory was 149.5 MB in the beginning and 312.4 MB in the end (delta: -162.9 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. [2020-10-05 23:52:17,061 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.22 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 100.8 MB in the beginning and 179.2 MB in the end (delta: -78.5 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 40.35 ms. Allocated memory is still 203.4 MB. Free memory was 179.2 MB in the beginning and 177.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.84 ms. Allocated memory is still 203.4 MB. Free memory was 177.2 MB in the beginning and 175.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.29 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 149.5 MB in the end (delta: 26.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 35505.38 ms. Allocated memory was 203.4 MB in the beginning and 410.5 MB in the end (delta: 207.1 MB). Free memory was 149.5 MB in the beginning and 312.4 MB in the end (delta: -162.9 MB). Peak memory consumption was 44.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 4.4s, 135 ProgramPointsBefore, 31 ProgramPointsAfterwards, 138 TransitionsBefore, 30 TransitionsAfterwards, 1920 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 1042 VarBasedMoverChecksPositive, 21 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2754 CheckedPairsTotal, 121 TotalNumberOfCompositions - 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: 35.3s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 345 SDtfs, 1762 SDslu, 1188 SDs, 0 SdLazy, 3012 SolverSat, 260 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 306 GetRequests, 73 SyntacticMatches, 4 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1125 ImplicationChecksByTransitivity, 20.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred in iteration=9, 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, 1047 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 9.1s InterpolantComputationTime, 318 NumberOfCodeBlocks, 318 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 302 ConstructedInterpolants, 74 QuantifiedInterpolants, 120955 SizeOfPredicates, 90 NumberOfNonLiveVariables, 820 ConjunctsInSsa, 226 ConjunctsInUnsatCore, 16 InterpolantComputations, 6 PerfectInterpolantSequences, 6/26 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...